SAN - STL

$54 Find Cheap Flights from San Diego to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Diego to St. Louis departing on 1/23. 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.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to St. Louis, 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 San Diego to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 41,299,237 times on KAYAK, and here is why:

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Cheap Flight Deals from San Diego to St. Louis (SAN-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego to St. Louis 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.

Recent round-trip flight deals from San Diego to St. Louis

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from San Diego to St. Louis.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
10:40 am - 7:31 pmSAN-STL
6h 51m1 stop
7:09 pm - 11:52 pmSTL-SAN
6h 43m1 stop
$108Frontier
Find Deal
Thu, Jan 23 - Sat, Jan 25
10:40 am - 7:31 pmSAN-STL
6h 51m1 stop
7:09 pm - 11:52 pmSTL-SAN
6h 43m1 stop
$128Frontier
Find Deal
Thu, Jan 23 - Fri, Jan 24
6:15 am - 4:33 pmSAN-STL
8h 18m1 stop
11:57 am - 7:13 pmSTL-SAN
9h 16m1 stop
$136American Airlines
Find Deal
Sat, Feb 15 - Thu, Feb 20
6:25 am - 9:16 amSAN-STL
24h 51m1 stop
8:31 pm - 12:05 pmSTL-SAN
17h 34m1 stop
$138Frontier
Find Deal
Fri, Jan 17 - Mon, Jan 20
10:15 am - 8:43 pmSAN-STL
8h 28m2 stops
6:30 am - 11:28 amSTL-SAN
6h 58m1 stop
$277United Airlines
Find Deal
Thu, Jan 23 - Fri, Jan 24
7:00 am - 3:38 pmSAN-STL
6h 38m1 stop
1:45 pm - 8:39 pmSTL-SAN
8h 54m2 stops
$281United Airlines
Find Deal
Thu, Jan 23 - Sat, Jan 25
10:45 pm - 9:24 amSAN-STL
8h 39m1 stop
5:34 am - 9:27 amSTL-SAN
5h 53m1 stop
$307American Airlines
Find Deal
Sun, Apr 27 - Tue, Apr 29
5:10 pm - 12:37 amSAN-STL
5h 27m1 stop
6:59 pm - 11:43 pmSTL-SAN
6h 44m1 stop
$397Delta
Find Deal
Thu, May 22 - Fri, May 30
9:10 am - 4:35 pmSAN-STL
5h 25m1 stop
12:15 pm - 2:10 pmSTL-SAN
3h 55mnonstop
$405Southwest
Find Deal
Tue, Apr 29 - Tue, May 6
5:50 pm - 1:35 amSAN-STL
5h 45m1 stop
12:15 pm - 2:10 pmSTL-SAN
3h 55mnonstop
$416Southwest
Find Deal
Sun, Apr 27 - Tue, Apr 29

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

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

The average price of all round-trip flights from San Diego to St. Louis clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to St. Louis on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from San Diego to St. Louis. For your return ticket, we recommend flying on a Tuesday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego to St. Louis, 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 San Diego to St. Louis is August, where tickets cost $256 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $469 and $397 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Diego to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from San Diego to St. Louis, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low season

January

High season

December

Cheapest flight

$54
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly with an average 34% increase in price.
Flight from San Diego to St. Louis

When to book flights from San Diego to St. Louis

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

  • What type of flights are offered from SAN to STL?

    The are 1-stop and 2-stop layover flights from SAN to STL often operated by Delta, Frontier, and American Airlines. The common layover cities include Las Vegas, Salt Lake City, Dallas, Chicago, and Atlanta. Direct flights are seldom offered from SAN to STL but you can get a few operated by Southwest Airlines.

  • Is there a Lost & Found Section at STL?

    There is a Lost & Found section maintained by the St. Louis Airport Police Department. Additionally, lost items are also recovered by the Transportation Security Administration (TSA) and if you wish to make an inquiry, do so between Monday and Friday. It’s also recommended to contact your airline for inquiries.

  • Is there a Car Rental Service at STL?

    To get to the car rental station, board the Enterprise Bus at the pick-up spot situated outside the baggage claim area. Here you’ll be assisted at the counter to get the rental agreement and vehicle keys but you may also find self-service stations for quick and easy rental transactions.

  • What are the travel options from STL to the city center?

    Aside from the Car Rental Service, other travel options to choose from include taking a taxi, a ride app, the MetroLink, or the bus service. The taxi zones are located at Terminal 1 Exit 14 and Terminal 2 Exit 12. The Ride App pick up zones are at Terminal 1 Exit 6 and Terminal 2 Exit 15. The MetroLink stations are at Terminal 1 Exit 1 and Terminal 2 Exit 12. Lastly, the Bus Port is located to the South of Terminal 1.

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

    In the last 3 days, the lowest price for a flight from San Diego to St. Louis was $54 for a one-way ticket and $108 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from San Diego to St. Louis?

    When flying out of San Diego you will be using San Diego. You will be landing at St. Louis, also known as Lambert-St Louis.

  • Which airlines offer Wi-Fi service onboard planes from San Diego to St. Louis?

    JetBlue, Alaska Airlines, American Airlines, and Delta offer inflight Wi-Fi service on the San Diego to St. Louis flight route.

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

    The Boeing 737-700 Passenger/BBJ1 (winglets) is the aircraft model that flies most regularly on the San Diego to St. Louis flight route.

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

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

  • Which is the best airline for flights from San Diego to St. Louis, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from San Diego to St. Louis are Southwest and Delta. With an average price for the route of $489 and an overall rating of 8.1, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $305 and an overall rating of 8.0.

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

    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 San Diego to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from San Diego 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 San Diego to St. Louis?

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

    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 St. Louis from San Diego 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 San Diego to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $243 or less one-way and $441 or less round-trip.
  • For travelers with disabilities, San Diego International Airport (SAN) offers a variety of accessibility features including parking, TDD telephones, wheelchair services, visual paging monitors, courtesy carts, and reasonable accommodation upon request.
  • SAN and St. Louis Lambert International Airport (STL) each have 3 lactation rooms for nursing mothers. All the lactation rooms are equipped with comfortable seating, power outlets, and sinks. The Lactation Suites at STL are near Gate A10, near Gate C9, and near Gate E33. The Lactation rooms at SAN are located at Terminal 1 East Rotunda, Terminal 1 West Rotunda, and Terminal 2 West.
  • Both SAN and STL have USO Lounges providing an assortment of complimentary services to active members of the military and their families at no extra cost. The USO Lounge at SAN is located on the East Floor of Terminal 2 landside whereas STL has 2 USO Lounges located on the lower level of the Terminal 1 landside and near the baggage claim area at Terminal 2 landside.
  • In addition to the Volunteer Airport Ambassador team, SAN has a program known as ‘Ready, Pet, Go’ where trained therapy dogs offer relief and comfort to travelers under stress and anxiety. These friendly pups are paired with Volunteer Airport Ambassadors who act as additional eyes for safety and also offer additional airport information.
  • There is a children’s playground officially known as The St. Louis International Play Port which offers a pretend airport experience with a kid-sized plane, an airport screening area, a traffic control tower which has a slide and other amazing features. It is located within the C Concourse near Gate C3.
See more tips

Prefer to fly direct from San Diego to St. Louis?

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

Direct departures

San Diego 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

Direct returns

Lambert-St Louis to San Diego

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 5 airlines serving from San Diego to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from San Diego to St. Louis. 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 San Diego to St. Louis? 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.
8.1
SouthwestOverall score based on 4821 reviews
8.7Crew
7.7Entertainment
8.1Comfort
8.2Boarding
7.2Food
Airline reviews

I recently flew Southwest from San Jose to Honolulu. I was very impressed with the flight crew, especially the flight attendant in charge of the front of the plane. She came through the aisle at least five times for drinks and water, and two times for snacks. I have not seen such service since I flew first class. Also, for the first time, they gave us the correct baggage claim number, and the luggage came out quickly. I can't wait for Southwest to have assigned seating! I absolutely hate the Cattle Call boarding procedure and the mad dash to get seats and overhead bins. However, the boarding was efficient.

10.0 ExcellentWilliam Drew, Dec 2024SJC - HNL
Read more Southwest reviews

I recently flew Southwest from San Jose to Honolulu. I was very impressed with the flight crew, especially the flight attendant in charge of the front of the plane. She came through the aisle at least five times for drinks and water, and two times for snacks. I have not seen such service since I flew first class. Also, for the first time, they gave us the correct baggage claim number, and the luggage came out quickly. I can't wait for Southwest to have assigned seating! I absolutely hate the Cattle Call boarding procedure and the mad dash to get seats and overhead bins. However, the boarding was efficient.

Crew was great flight was great baggage claim was a failure. It took over 1 hour for bags to arrive. Poor communication poor effort when I spoke to the supervisor about the delay

Everything was great except the food. The pretzels are really crappy.

We had a nice flight. Boarding was easy, our seats were comfortable and the on board service was pleasant.

Service was great, boarding and exiting went smoothly, and the flight was very pleasant.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a not a great airport.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a hell hole of an airport. It is the new LaGuardia. Everything Cobbled together. Security gates closed. Terri directional signage

I used to fly SWA all the time. I know the crew has their little acts that are often fun, and entertaining. On this flight one of the crew was just not nice. Very surprising.

The plane arrived 25 minutes late, and the Wi-Fi was slower than it usually is.

Forget beverage, they didn't even have water for half the passangers?

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

New boarding doesn't make sense. Filling front first is slow.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Horrible. Grateful to be alive but spent 13 hours at airport only to return back to my familys house and flight changed to next day. They tried to fix a part on plane, had no back up plane and after 10 hours , reattempted the flight and it STILL wasn't fixed. We got a meal voucher and rescheduled flight but there should be some other compensation for the 15 hours spent in airport

My seat was changed at the last minute and I was moved to the last row, right next to the bathroom despite selecting my seat well in advance. I was also made to check my carry on due to space but when I got on the plane there was significant empty overhead space. Picking up my carry on from the luggage carousel added time to my trip which had already been extended due to delay.

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.

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!

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

It was good. Just that the seats could not be reclined. The people behind were not ready to let the chairs be reclined

Plane left & arrived early- 5 Crew great. Wi fi - paid for 2, only 1 worked - so so. Waste of $. Coolie was good

There was no USB plug in my section of the plane. So I could not charge my phone. Also, there was no screen to watch movie or anything like that. Wish I had known that in advance, I would’ve brought my iPad.

Made all groups except 2 check despite ample bin space. Inflight WiFi and entertainment didn’t work most of the time.

Not enough room between rows and food was gross. $160 baggage charge?! Never again.

It was fine. The flight attendant appeared to be in a bad mood but everything was fine.

Seats are outdated. Entertainment relies on personal device. Boarding was delayed due to inaccurate passenger tracking, resulted in late arrival at Reno.

Excellent staff helping my 96 year old senior promptly with her oxygen needs

The crew and flight was amazing. I haven't flown United in years but plan to switch to you being my main airline

As usual, United scheduling is completely misleading. A 54-minute layover at O’Hare is too short to make a lot of connections, especially since the flight landed “on time” but had to wait on the taxiway 15 minutes for a gate to open up. Then it takes another 10 minutes to exit the plane before one can run to another concourse to catch a connecting flight.

Multiple maintenance delays and the missed and rebooked connection changed gates at least 6 times including one which had us walking 20 minutes to another terminal and then back again. Seated our family of three in different middle seats throughout the plane and then there was an empty seat next to me. Very long travel day which I would have never agreed to if I knew the itinerary would be changed at 5 am, 2 hours before takeoff.

It was as expected for such a short flight. No complaints

It was nice being on a flight that had working wifi. The boarding was quick - why don’t all airlines have small boarding groups window to aisle? Makes so much sense!!! I was disappointed to be the first person stopped to have to gate check my carryon. Especially when there was plenty of overhead space at the back! But I get it…keeps it moving. Crew was nice.

The flight encountered a delay exceeding 4 hours. The food voucher issued was valued at $12, insufficient to cover our meal expenses. Consequently, I was unable to take my medication, leading to a drop in blood sugar levels and exacerbating my anxiety.

I had a TERRIBLE experience with the AA crew. I believe it was disability-related. It’s unlikely I will fly AA again.

Not too impressed with them to be honest. They had forgotten my gf meal, despite the fact that the app had notified me that it was sorted. Apparently there is a ‘glitch’ in the system, according to one of the stewardesses, and has been for a while. Also the legroom in economy is way too small (and I’m a slight person) and are very uncomfortable. An extra Internal flight I booked via the app, had not even given me the option to order a meal, so was unaware of that and left without food on a 9 hr. flight !! Don’t think I’ll use AA again after this.

The flight was uneventful. What was a problem was I was delayed getting home one entire day because the flight from Sacramento was delayed. That made getting to my connecting flight impossible. I had to stay another night at the hotel and incur that expense as a result.

VERY disappointed at the agent checking in my luggage. I know that the weight limit is 23 kg, a little over 50 pounds (50.71 pounds). Yet the agent kept repeating "50 pounds". So I said, the limit is 23 kg, and she had the audacity to say 'no, it is 22 kg!" Imagine my surprise. Was she ignorant or was she poorly trained? Not sure. The boarding process was pretty good. The speakers were loud enough so I still could hear them despite inconsiderate passengers continuing to speak while the announcements were going on. During the flight, the teenage girl sitting behind me kept pressing her feet to the back of my chair. I turned around several times, yet she did not get the hint. I did not make a fuss since I sense I had a bad streak that night with AA, so I just did the best I can to lean forward and not let that bother me.

Seats were very uncomfortable. I paid extra for a seat with more leg room, the seat was no different than a seat at the back of the plane. Flight attendant was rude.

Flights were on time. That's the main consideration since I had to change planes. The entertainment was whatever you bring with you and the food (in Economy) is non-existant. Neither of those was a surprise.

The takeoff was the smoothest I've ever experienced on any airline and this is the first time I've flown on frontier so this was an extremely pleasant surprise!

A lady asked to stop the flight after the tunnel pulled away and we began to depart a flight that was already hours late. The attendance respectfully stopped the the plane and had the tunnel return. After the tunnel returned the passenger claimed to have changed her mind . The tunnel was then put in reverse and the passenger remained on the plane .. They should have sent the sick passenger off the plane like initially replaced. They existed a couple off the plane prior to that situation.. So.. all and all.. it was a long and flight.. .

With frontier you get what you pay for. The flight was two hours late. It’s a tight fit for the number of people they bring but you get to where you’re going cheap. Sometimes that’s more important than a nifty drink and cool TV..

Charges unexpected. For seat that didnt recline. Please reverse extra seat and carryon charge. Bad business that is a bait and switch.

We had an awful experience getting our bags checked in. Frontier’s check in on the app manipulated us into buying the business package because that was the only option available for a checked bag which included two checked bags per person which we did not need. Upon arriving to the airport, we stood in line for what seemed like forever at the baggage check in and there was no one available at the counter. We were first in line and we were afraid we were going to miss our flight due to the baggage attendant being late. After realizing there were a lot of other people waiting at the baggage check in and no one available. I reached out to Frontier and could not get any customer service so I had to call the airport to page the baggage attendant to send someone to the counter to check in our bags before we were able to go through security , I finally spoke to the attendant at the counter and explained to her that we had to pay for two checked bags person a total of six bags when we only had a total of three bags between three people she said to reach out to Frontier and they would issue a refund for the three bags that we paid for and did not need. I reached out to Frontier which I was not able to reach anybody by phone so I had to go through their automated chat feature, which sent me around in circles until I finally reached a representative to assist me. I explained to them what happened and they explained that they were not able to assist me. I continued to push the issue with them as this was very frustrating and they finally put in a customer service ticket where we were issued a flight credit and we were so disappointed because after this experience, we NEVER want to fly Frontier again, and we do not want a credit that we will not use. Frontier charged us almost $500 for us to check three bags which is absolutely absurd! The customer service agents were not able to offer anything else other than a flight credit and I do not feel like my frustrations were truly heard , we will never use Frontier Airlines again ! Truly Theft by Manipulation! They should be ashamed!

I couldn’t check in because the app didn’t work. It took 3 Frontier employees at the counter to get me checked in. Flight left 3 hours after departure time

While booking it was not obvious that I had to pay for carryon. Realized it only during check-in. Overall, meh!

Stop changing gates at sfo. When you are elderly going back for it’s not fun.

We understand and comply with Frontier’s bag sizes. We’ve had some problems in past while having to await other passengers who do not understand the baggage restrictions or have not prepaid and that is usually our biggest concern (others delaying us) with flying Frontier. Flying OUT of ONT, however, has always been a great experience. I’ve also noted even on delayed Frontier flights very knowledgeable pilots who manage expectations well.

There was no easy way to check in. I don't want to install an app to checkin. I will use alaska from now on because they have a web check in method that is easy.

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