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STL - SFO

$90 Find cheap flights from St. Louis to San Francisco

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 San Francisco departing on 6/4. 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
Thu 6/27
Thu 7/4

Search hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to San Francisco.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to San Francisco.
In the last 7 days travelers have searched 42,816,550 times on KAYAK, and here is why:

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

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

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Cheap flight deals from St. Louis to San Francisco (STL-SFO)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to San Francisco 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
7:29 pm - 12:59 amSTL-SFO
7h 30m1 stop
12:58 am - 2:53 pmSFO-STL
11h 55m1 stop
$180Frontier
Find Deal
Sat, Aug 31 - Wed, Sep 11
7:29 pm - 12:58 amSTL-SFO
7h 29m1 stop
11:43 am - 8:36 pmSFO-STL
6h 53m1 stop
$184Frontier
Find Deal
Tue, Aug 13 - Fri, Aug 23
6:08 pm - 10:55 pmSTL-SFO
6h 47m1 stop
7:50 am - 6:40 pmSFO-STL
8h 50m1 stop
$224American Airlines
Find Deal
Wed, Jul 3 - Sat, Jul 6
9:50 am - 1:59 pmSTL-SFO
6h 09m1 stop
12:54 am - 9:00 amSFO-STL
6h 06m1 stop
$295American Airlines
Find Deal
Wed, Oct 9 - Wed, Oct 9
6:15 am - 12:04 pmSTL-SFO
7h 49m1 stop
12:35 am - 9:51 amSFO-STL
7h 16m1 stop
$304United Airlines
Find Deal
Tue, Sep 3 - Sat, Sep 7
7:55 am - 12:10 pmSTL-SFO
6h 15m1 stop
11:55 pm - 9:10 amSFO-STL
7h 15m1 stop
$333Delta
Find Deal
Tue, Jun 18 - Tue, Jun 18
1:45 pm - 5:48 pmSTL-SFO
6h 03m1 stop
11:10 am - 5:03 pmSFO-STL
3h 53mnonstop
$349United Airlines
Find Deal
Tue, Aug 13 - Wed, Aug 21
7:00 am - 10:31 pmSTL-SFO
17h 31m2 stops
8:00 am - 11:59 pmSFO-STL
13h 59m2 stops
$399Alaska Airlines
Find Deal
Fri, Nov 1 - Fri, Nov 8
2:34 pm - 8:05 pmSTL-SFO
7h 31m1 stop
8:39 am - 11:58 pmSFO-STL
13h 19m2 stops
$417Alaska Airlines
Find Deal
Fri, Sep 27 - Tue, Oct 1
11:51 am - 6:44 pmSTL-SFO
8h 53m1 stop
5:15 pm - 12:30 amSFO-STL
5h 15m1 stop
$428Delta
Find Deal
Fri, Nov 8 - Fri, Nov 22

Flights from St. Louis to San Francisco - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to San Francisco 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 San Francisco?

The average price of all flights from St. Louis to San Francisco clicked on KAYAK for each day over the last 12 months.
When flying from St. Louis to San Francisco, you should consider leaving on a Tuesday and avoid Mondays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Tuesdays and the most expensive ones on Thursdays.

What is the cheapest month to fly from St. Louis to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to San Francisco, 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 San Francisco is April, where tickets cost $294 on average. On the other hand, the most expensive months are June and November, where the average cost of tickets is $463 and $463 respectively.

How far in advance should I book a flight from St. Louis to San Francisco?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to San Francisco, 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 San Francisco, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 84 days before departure.

Which airlines provide the cheapest flights from St. Louis to San Francisco?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from St. Louis to San Francisco found on KAYAK was with Frontier for $90. Frontier proposed a round-trip connection from $180 and American Airlines from $224.

How many flights are there between St. Louis and San Francisco per day?

There is a maximum of 1 nonstop flight a day that takes off from St. Louis and lands in San Francisco, with an average flight time of 4h 05m. The most common departure time is 11:00 am and most flights take off in the morning. Each week, there are 7 flights.

Which cabin class options are there for flights between St. Louis and San Francisco?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There is only one cabin class option available for the route, which is 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 San Francisco take?

Direct flights cover the 1,730 miles separating St. Louis to San Francisco in about 4h 25m.

What’s the earliest departure time from St. Louis to San Francisco?

Early birds can take the earliest flight from St. Louis at 11:55 am and will be landing in San Francisco at 2:00 pm.

What’s the latest departure time from St. Louis to San Francisco?

If you prefer to fly at night, the latest flight from St. Louis to San Francisco jets off at 7:30 pm and lands at 9:55 pm.

Good to know

Low season

January

High season

July

Cheapest flight

$90
Best time to beat the crowds but there is an average 10% increase in price.
Most popular time to fly with an average 6% increase in price.
Flight from St. Louis to San Francisco

When to book flights from St. Louis to San Francisco

Are your dates flexible? Find out the best times to travel from St. Louis to San Francisco 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 flights from St. Louis to San Francisco

  • Where can I sleep at San Francisco International Airport (SFO)?

    FreshenUp in the International Terminal provides three nap rooms that passengers can rent by the hour. FreshenUp is landside on level G, next to the airport travel agency. The nap rooms have a bed, desk, mirror, and free Wi-Fi. Showers are also provided but at an additional cost. Grand Hyatt at SFO is a hotel within SFO grounds that offers days rooms and overnight stays. It is connected to the airport via the AirTrain.

  • Does San Francisco International Airport offer family services?

    Nursing rooms have been provided for those traveling with infants at SFO. Nursing rooms are private and lockable and have comfortable seating and power outlets. You’ll find nursing rooms airside in Terminals 1, 2, and 3, with only Terminal 2 providing a landside option. Cloud of Good at SFO is an establishment that offers car seats and strollers for rent. They have three locations at SFO, one in each terminal. SFO has children play areas with interactive exploration areas for the older kids. You’ll find the play area around Gates 22, 54A, 58B, 87A, and 62.

  • Does San Francisco International Airport offer accessible services?

    Yes, SFO is a fully accessible airport. PRM will quickly get through the terminals, with ramps and elevators providing barrier-free access. PRM will also get accessible restrooms, reserved parking spots, dedicated seating, fast track services, and wheelchair assistance from their airlines. Low vision passengers coming through SFO have tactile guide paths, braille-coded elevator buttons, and Aira services to guide them through the airport. SFO has also provided TDD telephones and visual paging for hard-of-hearing passengers.

  • What are the transport options from San Francisco International Airport?

    Trains are the quickest means of getting downtown, and SFO is served by the San Francisco BART, which you can take from the SFO station at the Departures level of the International Terminal. You can also take the BART and connect to CalTrain commuter train services that serve the larger San Francisco area and San Jose. SamTrans provides bus services between SFO and downtown San Francisco. They have three bus routes serving SFO, and you can board these buses from the baggage claim level of Terminals 2 and 3 and level 1 of Courtyard A in the International Terminal.

  • What is the cheapest flight from St. Louis to San Francisco?

    In the last 3 days, the lowest price for a flight from St. Louis to San Francisco was $90 for a one-way ticket and $180 for a round-trip.

  • Do I need a passport to fly between St. Louis and San Francisco?

    No

  • Which aircraft models fly most regularly from St. Louis to San Francisco?

    The Airbus A319 is the aircraft model that flies most regularly on the St. Louis to San Francisco flight route.

  • On which days can I fly direct from St. Louis to San Francisco?

    There are nonstop flights from St. Louis to San Francisco on a daily basis.

  • Which is the best airline for flights from St. Louis to San Francisco, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to San Francisco are Delta and Alaska Airlines. With an average price for the route of $427 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $552 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from St. Louis to San Francisco?

    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 San Francisco.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco 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 San Francisco?

    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 San Francisco with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and SFO 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 San Francisco?

    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 San Francisco 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 San Francisco

  • Looking for a cheap flight? 25% of our users found flights on this route for $124 or less one-way and $1,298 or less round-trip.
  • St. Louis Lambert International Airport (STL) has two terminals and five concourses. The airport has provided a free shuttle for inter-terminal transportation that runs every 8-12min.
  • STL welcomes cats, dogs, and all pets. The airport has provided six pet relief areas, including indoors and outdoors. The indoor locations are after security, while the outdoor locations are outside Terminal 2 and the upper west side of Terminal 1.
  • American Airlines is the only airline with a lounge at STL. You must pay at the door and show your flight ticket to access this lounge. The AA lounge is airside between Concourses B and C.
  • US Bank has a full-service branch at STL. The bank offers banking and currency exchange services, and the bank is on the lower level of Terminal 1.
  • Around 920 kg of carbon is emitted on flights from St. Louis to San Francisco. You can fly more sustainably with Frontier Airlines, which offers flights that emit 45% less carbon per passenger.
See more tips

Prefer to fly non-stop from St. Louis to San Francisco?

Find which airlines fly direct from Lambert-St Louis to San Francisco, which days they fly and book direct flights.

Nonstop departures

Lambert-St Louis to San Francisco

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Nonstop returns

San Francisco to Lambert-St Louis

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights
See more direct flights

Top 4 airlines serving from St. Louis to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to San Francisco. 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 San Francisco? 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 10502 reviews
7.9Comfort
7.4Food
8.2Boarding
8.0Entertainment
8.6Crew
Airline reviews

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

8.0 ExcellentLiam, May 2024SLC - SJC
Read more about Delta reviews

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

I’ve had a couple flights this week on United that were delayed by an hour or more

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

So so. Terrible aircraft choice for that leg of the flight.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

United airline kept delaying our flight back to Phoenix for 8 hours before they cancelled it! If they know that we are not flying out for whatever the reason is, why did they keep lying to us for hours. We could find another flight earlier or even find a hotel with a shuttle. But cancellation at about midnight was not fun. We stayed in the airport all night till the following morning when we bought an Alaska tickets to go back to Phoenix. Total of 14 hours in the airport.

Poor seating comfort, seat cushion too thin, very uncomfortable. My luggage didi not make the flight due to equipment change. At least. United had it delivered the next day. I was without my toilet items for one day.

There were delays on both ends. It made it less than excellent. This plane was great though

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Attendants were rude. Scowling. Seats were miserable and we paid extra.

The CX617 from HK to BKK was delayed more than 1.5 hours.

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.

Somehow I got “offloaded” even though I had my boarding pass and was in transit Food is horrible Staff were nice and cheerful No headphones were provided on 11 hours flight

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

The staff were very helpful with lots of refreshments on offer. The toilets were clean. The seats were comfortable and entertainment was good. No complaints, it was excellent.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

My experience with frontier staff at the Denver airport was absolutely horrible. The manager on duty was even worst if was the worst experience I have ever had, I have never been treated so poorly as a customer in my life! The staff was extremely rude, eye rolls and attitude and then refusal to help me at all. I wish I could never fly frontier again that’s how horrible it was!

The Frontier app wasn’t working. So I could not pay for a carry on the week prior to flying. They charged me 99$ at the gate to carry on a duffle bag.

Good for the price. My only complaint is that the pilot should keep the air flowing while passengers are waiting to getting out of airplane.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

The boarding time. I was in Section 1 the lady in charge just let people in section 3 without see us. Make a line , I have to step out and ask her. We were in the line and she just take my ticket and that’s it, so if I don’t ask her she could leave us at the end! We paid more for that privilege and. She doesn’t care….

Book cheap flights from St. Louis to San Francisco

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to San Francisco found on KAYAK in the last 72 hours.
6/4Tue
1 stopFrontier
7h 18mSTL-SFO
$90
6/15Sat
1 stopFrontier
7h 15mSTL-SFO
$91
6/3Mon
1 stopFrontier
7h 18mSTL-SFO
$94
8/18Sun
1 stopDelta
9h 05mSTL-SFO
$134
7/10Wed
1 stopDelta
7h 19mSTL-SFO
$168
8/19Mon
nonstopUnited Airlines
4h 25mSTL-SFO
$170
7/1Mon
2 stopsAlaska Airlines
25h 06mSTL-SFO
$245
7/3Wed
2 stopsAlaska Airlines
11h 50mSTL-SFO
$252
6/11Tue
2 stopsUnited Airlines
18h 14mSTL-SFO
$253
6/2Sun
2 stopsAmerican Airlines
13h 34mSTL-SFO
$403

Search by stops

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Last minute flights from St. Louis to San Francisco

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 San Francisco that are departing in the next 10 days.
5/29Wed
multi-stopAmerican Airlines
8h 47mSTL-SFO
5/30Thu
multi-stopAmerican Airlines
9h 25mSFO-STL
$223
5/30Thu
multi-stopFrontier
7h 07mSTL-SFO
6/3Mon
multi-stopFrontier
8h 06mSFO-STL
$242
6/1Sat
multi-stopFrontier
15h 03mSTL-SFO
6/5Wed
multi-stopFrontier
9h 37mSFO-STL
$247
5/29Wed
multi-stopDelta
9h 29mSTL-SFO
6/1Sat
multi-stopDelta
9h 24mSFO-STL
$268
5/29Wed
multi-stopAmerican Airlines
8h 47mSTL-SFO
6/1Sat
multi-stopAmerican Airlines
6h 46mSFO-STL
$282
6/1Sat
multi-stopUnited Airlines
8h 30mSTL-SFO
6/8Sat
multi-stopUnited Airlines
7h 59mSFO-STL
$295
6/1Sat
multi-stopUnited Airlines
7h 29mSTL-SFO
6/6Thu
multi-stopUnited Airlines
7h 26mSFO-STL
$342
5/29Wed
multi-stopDelta
9h 29mSTL-SFO
5/31Fri
multi-stopDelta
8h 30mSFO-STL
$343
5/29Wed
multi-stopAlaska Airlines
7h 26mSTL-SFO
5/30Thu
multi-stopAlaska Airlines
15h 59mSFO-STL
$610
5/30Thu
multi-stopAlaska Airlines
10h 14mSTL-SFO
6/3Mon
multi-stopAlaska Airlines
13h 59mSFO-STL
$731

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St. Louis - San Francisco Flights

Departure:

St. Louis (STL)United States

Destination:

San Francisco (SFO)United States

Return flight deals:

San Francisco - St. Louis

Cabin classes:

$2,413
$6,557
$1,004