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STL - PHX

$49 Find cheap flights from St. Louis to Phoenix Sky Harbor Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Phoenix departing on 6/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Wed 7/10
Wed 7/17

Search hundreds of travel sites at once for deals on flights to Phoenix Sky Harbor Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Phoenix, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Phoenix, as well as popular online travel agencies
In the last 7 days travelers have searched 42,898,604 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from St. Louis to Phoenix (STL-PHX)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Phoenix that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
9:55 pm - 11:04 pmSTL-PHX
3h 09mnonstop
5:50 pm - 10:51 pmPHX-STL
3h 01mnonstop
$58Frontier
Find Deal
Sat, Aug 10 - Sat, Aug 17
9:26 pm - 10:44 pmSTL-PHX
3h 18mnonstop
3:35 pm - 8:36 pmPHX-STL
3h 01mnonstop
$68Frontier
Find Deal
Wed, Aug 14 - Mon, Aug 26
7:40 am - 8:54 amSTL-PHX
3h 14mnonstop
6:55 pm - 11:55 pmPHX-STL
3h 00mnonstop
$131American Airlines
Find Deal
Tue, Jul 9 - Mon, Jul 15
7:39 am - 8:53 amSTL-PHX
3h 14mnonstop
12:26 pm - 5:29 pmPHX-STL
3h 03mnonstop
$156American Airlines
Find Deal
Sun, Aug 25 - Sun, Sep 1
10:11 am - 11:07 pmSTL-PHX
14h 56m1 stop
5:55 am - 5:29 pmPHX-STL
9h 34m1 stop
$190Spirit Airlines
Find Deal
Tue, Jul 23 - Sat, Jul 27
1:59 pm - 7:51 pmSTL-PHX
7h 52m1 stop
8:41 pm - 1:04 pmPHX-STL
14h 23m1 stop
$200Spirit Airlines
Find Deal
Fri, Sep 20 - Mon, Sep 23
6:06 am - 11:11 amSTL-PHX
7h 05m1 stop
2:01 pm - 11:20 pmPHX-STL
7h 19m1 stop
$216Delta
Find Deal
Sun, Jun 30 - Thu, Jul 4
8:58 am - 3:03 pmSTL-PHX
8h 05m1 stop
6:00 am - 4:22 pmPHX-STL
8h 22m2 stops
$221United Airlines
Find Deal
Wed, Aug 14 - Wed, Aug 28
7:55 am - 12:12 pmSTL-PHX
6h 17m1 stop
5:02 pm - 12:55 amPHX-STL
5h 53m1 stop
$247Delta
Find Deal
Mon, Jul 1 - Tue, Jul 9
5:01 pm - 9:20 pmSTL-PHX
6h 19m1 stop
6:00 am - 4:22 pmPHX-STL
8h 22m2 stops
$256United Airlines
Find Deal
Sun, Aug 25 - Sun, Sep 1

Flights from St. Louis to Phoenix - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to Phoenix to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to Phoenix Sky Harbor Airport?

The average price of all flights from St. Louis to Phoenix Sky Harbor Intl Airport clicked on KAYAK for each day over the last 12 months.
For St. Louis to Phoenix Sky Harbor Airport, Tuesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Phoenix Sky Harbor Airport back to St. Louis, the best deals are generally found on Wednesday, with Sunday being the most expensive.

What is the cheapest month to fly from St. Louis to Phoenix Sky Harbor Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Phoenix Sky Harbor Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from St. Louis to Phoenix Sky Harbor Intl Airport is May, where tickets cost $230 on average. On the other hand, the most expensive months are March and December, where the average cost of tickets is $418 and $404 respectively.

How far in advance should I book a flight from St. Louis to Phoenix Sky Harbor Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Phoenix Sky Harbor Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from St. Louis to Phoenix Sky Harbor Intl Airport, you should book around 3 days before departure. For the absolute cheapest price, our data suggests you should book 83 days before departure.

Which airlines provide the cheapest flights from St. Louis to Phoenix Sky Harbor Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on Frontier ($49) and American Airlines ($66). The cheapest round-trip tickets were found on Frontier ($58) and CitizenPlane ($119).

Which airlines fly non-stop between St. Louis and Phoenix Sky Harbor Intl Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from St. Louis to Phoenix Sky Harbor Intl Airport.
There are 3 airlines that fly nonstop from St. Louis to Phoenix Sky Harbor Intl Airport. They are: American Airlines, Frontier and Southwest. The cheapest price of all airlines flying this route was found with Frontier at $78 for a one-way flight. On average, the best prices for this route can be found at Frontier.

How many flights are there between St. Louis and Phoenix Sky Harbor Intl Airport per day?

Each day, there are between 6 and 11 nonstop flights that take off from St. Louis and land in Phoenix Sky Harbor Intl Airport, with an average flight time of 3h 12m. The most common departure time is 6:00 pm and most flights take off in the morning. Each week, there are 60 flights. The most frequent day of departure is Friday, when 18% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between St. Louis and Phoenix Sky Harbor Intl Airport?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 3 cabin class options for the route. These are First, Business and Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from St. Louis to Phoenix Sky Harbor Airport take?

Direct flights cover the 1,258 miles separating St. Louis to Phoenix Sky Harbor Airport in about 3h 09m.

What’s the earliest departure time from St. Louis to Phoenix Sky Harbor Airport?

Early birds can take the earliest flight from St. Louis at 5:15 am and will be landing in Phoenix Sky Harbor Intl Airport at 6:30 am.

What’s the latest departure time from St. Louis to Phoenix Sky Harbor Airport?

If you prefer to fly at night, the latest flight from St. Louis to Phoenix Sky Harbor Intl Airport jets off at 10:59 pm and lands at 12:08 am.

Good to know

Low season

September

High season

March

Cheapest flight

$49
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly with an average 19% increase in price.
Flight from St. Louis to Phoenix Sky Harbor Airport

When to book flights from St. Louis to Phoenix

Are your dates flexible? Find out the best times to travel from St. Louis to Phoenix based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking St. Louis to Phoenix Sky Harbor Airport flights

  • Can I withdraw money at STL?

    If you’d like to withdraw some cash at STL, you’ll be able to do so with ease, given that this airport is full of operational ATMs. The ATMs are located near Gate A10 in Concourse A, the Mid-Level Stage of Terminal 1, Gate C15 in Concourse C, Gate E20 in Terminal 2, and the entrance doors of Terminal 2.

  • What is the most convenient way to travel from St. Louis to STL?

    The most convenient way to travel from St. Louis to STL is by taxi. This is because, aboard one of the taxis present in St. Louis, you’ll be able to travel comfortably with all your luggage from your preferred pickup point to the entrance of STL’s terminals.

  • Does PHX have a medical center?

    If you feel a bit unwell while on your flight from STL to PHX, before departing PHX, you can receive a quick medical check-up at XpresCheck. Located on Level 3 of Terminal 4, this clinic boasts well-trained professionals.

  • Does PHX have a chapel?

    In case you’d like to pray, meditate, or gather your thoughts before departing PHX, you’ll be able to do so, given that PHX has a chapel on Level 3 of Terminal 4. It’s worth mentioning that you can pray at this chapel, regardless of your faith, as it is an interfaith chapel.

  • What is the cheapest flight from St. Louis to Phoenix Sky Harbor Intl Airport?

    In the last 3 days, the lowest price for a flight from St. Louis to Phoenix Sky Harbor Intl Airport was $49 for a one-way ticket and $58 for a round-trip.

  • Do I need a passport to fly between St. Louis and Phoenix Sky Harbor Airport?

    No

  • Which airports will I be using when flying from St. Louis to Phoenix Sky Harbor Airport?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Phoenix Sky Harbor Airport, also known as Phoenix Sky Harbor Intl.

  • Which airlines offer Wi-Fi service onboard planes from St. Louis to Phoenix Sky Harbor Airport?

    American Airlines, Alaska Airlines, and Delta offer inflight Wi-Fi service on the St. Louis to Phoenix Sky Harbor Airport flight route.

  • Which aircraft models fly most regularly from St. Louis to Phoenix Sky Harbor Airport?

    The Boeing 737-800 is the aircraft model that flies most regularly on the St. Louis to Phoenix Sky Harbor Airport flight route.

  • Which airline alliances offer flights from St. Louis to Phoenix Sky Harbor Airport?

    oneworld is the only airline alliance operating flights between St. Louis and Phoenix Sky Harbor Airport.

  • On which days can I fly direct from St. Louis to Phoenix Sky Harbor Airport?

    There are nonstop flights from St. Louis to Phoenix Sky Harbor Airport on a daily basis.

  • Which is the best airline for flights from St. Louis to Phoenix, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Phoenix are Delta and United Airlines. With an average price for the route of $391 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $494 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from St. Louis to Phoenix Sky Harbor Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Phoenix Sky Harbor Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Phoenix Sky Harbor Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Phoenix Sky Harbor Airport from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Phoenix Sky Harbor Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Phoenix Sky Harbor Airport with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and PHX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Phoenix Sky Harbor Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Phoenix Sky Harbor Airport from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from St. Louis to Phoenix Sky Harbor Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $93 or less one-way and $213 or less round-trip.
  • St. Louis Lambert International Airport (STL) usually has security checkpoints characterized by lengthy lines. Time and again, passengers have missed their flights at this airport after being unable to go through its security checkpoints in time for their flights. To avoid such a fate, on the date you’re scheduled to fly to Phoenix, it’s in your best interest to reach this airport at least 2h before your flight.
  • If you require special in-flight services on your flight from STL to Phoenix Sky Harbor International Airport (PHX), you should contact and inform the airline you intend to travel with of the special assistance services you’ll require. It’s advisable that you do so when booking your flight or at least 72h before your flight.
  • STL features several on-site parking garages. This airport is also surrounded by a number of off-site garages. If you’d like to leave your car in a parking garage you can easily get to from the airport upon your return from your trip, you should leave it in an off-site garage, as off-site garages charge cheaper rates than the on-site garages.
  • If you travel to PHX with your pet, you can take advantage of the numerous designated pet relief areas at the airport. Some of these pet relief areas are outdoors, while others are indoors. The outdoor ones are located west of Terminal 3, outside the baggage claim area of Terminal 4, and at the northwest corner of the 44th Street PHX Sky Train station.
  • At PHX, you can easily rent a car, as the airport features a Rental Car Facility that houses branches for dependable car rentals like Alamo, Avis, Budget, Dollar, Enterprise, National, Payless, SIXT, and Thrifty. To get to this rental car facility, situated south of the airport’s complex, you will board an airport shuttle.
See more tips

Prefer to fly non-stop from St. Louis to Phoenix Sky Harbor Airport?

Find which airlines fly direct from Lambert-St Louis to Sky Harbor Intl, which days they fly and book direct flights.

Nonstop departures

Lambert-St Louis to Phoenix Sky Harbor Intl

Monday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Tuesday

Alaska Airlines, American Airlines, Southwest

Alaska Airlines, American Airlines, +1 more

Wednesday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Thursday

Alaska Airlines, American Airlines, Southwest

Alaska Airlines, American Airlines, +1 more

Friday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Saturday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Sunday

Alaska Airlines, American Airlines, Southwest

Alaska Airlines, American Airlines, +1 more

See more direct flights

Nonstop returns

Phoenix Sky Harbor Intl to Lambert-St Louis

Monday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Tuesday

Alaska Airlines, American Airlines, Southwest

Alaska Airlines, American Airlines, +1 more

Wednesday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Thursday

Alaska Airlines, American Airlines, Southwest

Alaska Airlines, American Airlines, +1 more

Friday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Saturday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Sunday

Alaska Airlines, American Airlines, Southwest

Alaska Airlines, American Airlines, +1 more

See more direct flights
See more direct flights

Top 5 airlines serving from St. Louis to Phoenix

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Phoenix. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Phoenix? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10295 reviews
7.9Comfort
7.4Food
8.6Crew
8.2Boarding
8.0Entertainment
Airline reviews

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

2.0 MediocreCraig, Jun 2024CVG - LGA
Read more about Delta reviews

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

Among the poorest flights I’ve had with Delta in a while. Entertainment system failed completely on a 7.5 hr flight. Crew seemed distracted and not the normal friendly crew. Flight overbooked it seemed… very crowded.

If I can, I always fly Delta. I’ve found their service to always be reliable and pleasant.

You could have not cancelled the flight (AA, which I will be flying from now on) left for BOS despite the fictitious weather issues (that no one in my Boston family could see). You could have rebooked my direct flight to another direct flight instead of sending me though JFK, the worst US airport after O’Hara You could have rebooked me on a Main Cabin seat (like the one I paid for in my original ticket instead of putting me a the last row on JFK->BOS leg, pocketing the difference in ticket price But I do not really care whether you will ever do that in a future because in a future neither I nor anyone from my company (unless they pay out of pocket) nor an of my clients and partners (if they heed my advice) will ever be caught dead on any of Delta flights

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

It was pretty good I was worried with the short Layover that I might not catch my connection but the gate was there

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Friendly flight attendants. Comfort plus seats were very comfortable and had lots of leg room. 10A and 10 B.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

It is a modern tragedy that any airline expects you to travel for 14 hours in such discomfort and that the only way to add comfort is exorbitant prices. I was in pain by the time we landed. Shameful.

Original plane sidelined. Had to wait an hour for replacement.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

No real agent onsite helping you for missing luggage there. Not like the other airline next to UA desk, they have staff attending in their desk assisting answer/helping luggage issue, even after midnight.

Horrible, the flights kept delaying, so it is obvious that we won't be able to make it to the next connection. No easier/real agent on site to help you figure this out. UA agent on other counters refuse to assist you and direct us to use the QR code/call customer service. So inefficient and poor. While technology seems convenient, but it's not the best interest/experience for customers need help while there is active issue need assistance.

After the morning frenzy of 35 min wait through CLT security at 4;30 AM, it was nice to have a smooth pleasant boarding experience. This 6:30 AM flight was not full. We were able to get seated swiftly and took off promptly. Nice touch they distributed the old fashioned headsets with 8 mm jacks. Snacks were decent and arrival was uneventful.

My window shade didn’t work. So I missed coming into my city. ☹️

Flight was delayed in the gate by 5 hours and ultimately cancelled- rebooking service by United agents was terrible

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Not worth the price of premium class ticket paid, felt more like steerage.

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Flight attendant was incredible. Very efficient, friendly and pleasant. Patricia was one of the best I have ever seen. Please give her a big raise!

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

American Airlines continues to price it can provide the least comfortable passenger experience in the air. This legacy carrier rivals the budgets for both terrible seats and inadequate amenities. I am a 5’7” woman who is not wider than a coach seat (even on these narrow bodied aircraft). My 3.5 hour flight was terribly uncomfortable because the leg room is inadequate (my knees hit the seat on front of me even when it was not reclined); the seat barely reclines; and the foam padding is worn thin to the extent one can feel the metal supports of the seat. Add to this the fact that the aisle is super narrow, so that the drink cart literally scrapes the arm rest of the aisle seat. It’s basically torture.

Plane took off without me, my stepdad and a dozen other passengers. It went from an hour delay to boarding in 15 montures without notifying anyone. Names were not called overhead. Now I’m missing a day of work and stuck in Charolette overnight paying for a hotel and Ubers out of pocket

Flight from SBP to DFW 1. They rerouted us through PHX 2. Delayed flight out of SBP for 3 hrs so we missed our connection Downgrade on rerouted flight. Back of the plane, center seats, didn't sit together 4. Return flight out of DFW same exact thing. Delayed, missed connection, Downgrade + they lost our luggage! A complete mess.

after boarding on phx to sjd, crew discovered that one of the megaphones was either out of date or not working. It took 90 minutes to get a replacement and do the "paperwork." That is really unacceptable. Why wasn't the megaphone problem discovered before boarding? Is it part of normal maintenance check? who is responsible for checking. How can paperwork take that long? Fortunately, SJD was final destination for most travelers so very few if any passengers had to miss connections.

Flight From PHX to CVG was on time, very professional staff

Excellent- plan was barely populated. I cannot remember a flight where I was able/encouraged to stretch out!

Flight attendants used to be nice to people. And any flight over 5 hours should have some kind of food other than tiny pretzels and one drink comped.

Flight was canceled less than 6 hours before takeoff, rebooked on a flight that was twice as long and left earlier so we couldn’t make it, when using text support option took over 2 hours to speak with someone.

Not enough help at airport during boarding process. Flight was delayed. Overall WORST flying experience I’ve ever had. Will NEVER FLT SPIRIT AGAIN

Terrible legroom, seats do not recline, tray table the size of an iPhone, delayed flight, have to pay 5$ to get a cup of water onboard.

Could have TV/Movie and some water ou soda free

Flight was good and clean but delayed over an hour on the return flight.

The non stop flight and able to go into Atlantic City airport. They could lower the prices. It starts out low but then if you want to bring luggage and pick your seat the price goes up quite a bit.

Flight got diwngraded last minute and left us stranded. I was told I’ll be given credit for my luggage and seat upgrades but haven’t got anything yet

We can’t predict circumstances like this ahead of time, but I give your staff a hats off for immediately giving us updated informations.

It was nice! There was a very unhappy child in front of us and the flight attendant did a great job calming the child. I was impressed.

The plane was not on time for boarding or departure or arrivals.

I strongly dislike Frontier. I find them barebones, the seats not particularly comfortable, the nickel and diming is maddening, the app is TERRIBLE - super confusing to navigate, and the last 4 frontier flights I have flown have been on AVERAGE 2 hours late, one ruining a fancy night out in Vegas with reservations made well in advance, which was nodded to with a measly 5000 miles, which translates to almost nothing. At least credit a free checked bag or something.

8 hr delay. had to buy another ticket with another airline

Four and a half hour delay in total. What frustrates me most is the poor communication and disorganization.

I appreciated the upgrade to free cary-on bag and seat selection at no charge

FRONTIER SUCKS! The agent downstairs tricked me into booking, just to get to the gate. At the gate, they told me they couldn't help. I then called Customer Service. They and the gate attendants kept blaming each other. Neither side was willing to help the customer.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

Book cheap flights from St. Louis to Phoenix

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Phoenix found on KAYAK in the last 72 hours.
6/29Sat
nonstopFrontier
3h 17mSTL-PHX
$49
6/21Fri
nonstopFrontier
3h 17mSTL-PHX
$59
7/2Tue
nonstopAmerican Airlines
3h 17mSTL-PHX
$66
10/3Thu
1 stopSpirit Airlines
7h 52mSTL-PHX
$92
7/2Tue
1 stopSpirit Airlines
10h 18mSTL-PHX
$101
6/29Sat
1 stopUnited Airlines
6h 30mSTL-PHX
$108
7/14Sun
3 stops
35h 25mSTL-PHX
$155
10/3Thu
nonstopAmerican Airlines
3h 25mSTL-PHX
$159
7/7Sun
2 stops
18h 19mSTL-PHX
$162
12/3Tue
2 stopsUnited Airlines
10h 46mSTL-PHX
$257

Search by stops

Search by airline

Search by price

Last minute flights from St. Louis to Phoenix

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Phoenix that are departing in the next 10 days.
6/12Wed
nonstopFrontier
3h 18mSTL-PHX
6/18Tue
multi-stopFrontier
5h 41mPHX-STL
$158
6/14Fri
nonstopFrontier
3h 17mSTL-PHX
6/21Fri
nonstopFrontier
2h 54mPHX-STL
$168
6/12Wed
nonstopAmerican Airlines
3h 17mSTL-PHX
6/18Tue
nonstopAmerican Airlines
2h 54mPHX-STL
$201
6/12Wed
multi-stopDelta
7h 05mSTL-PHX
6/18Tue
multi-stopDelta
7h 39mPHX-STL
$253
6/11Tue
nonstopAmerican Airlines
3h 20mSTL-PHX
6/15Sat
nonstopAmerican Airlines
2h 54mPHX-STL
$271
6/11Tue
multi-stopDelta
7h 27mSTL-PHX
6/14Fri
multi-stopDelta
7h 55mPHX-STL
$290
6/14Fri
multi-stop
8h 50mSTL-PHX
6/15Sat
multi-stop
8h 28mPHX-STL
$313
6/14Fri
multi-stopUnited Airlines
6h 25mSTL-PHX
6/15Sat
multi-stopUnited Airlines
12h 22mPHX-STL
$425
6/15Sat
multi-stopUnited Airlines
12h 40mSTL-PHX
6/16Sun
multi-stopUnited Airlines
10h 02mPHX-STL
$465
6/15Sat
multi-stop
25h 15mSTL-PHX
6/16Sun
multi-stop
19h 35mPHX-STL
$590

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St. Louis - Phoenix Sky Harbor Airport Flights

Departure:

St. Louis (STL)United States

Destination:

Phoenix Sky Harbor Airport (PHX)United States

Return flight deals:

Phoenix Sky Harbor Airport - St. Louis

Cabin classes:

$1,309
$3,299
$1,272
$114