Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San Diego to St. Louis from $54

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to St. Louis departing on 1/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Deals available from 900+ travel sites.

"This year, momondo is the #1 place for airfares on the internet."
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.
Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.
Price Alerts
Price Alerts
Not ready to book? to track prices.

Find the cheapest flights from San Diego to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from San Diego to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from San Diego to St. Louis.

Cheap last minute flights

Planning a quick getaway from San Diego to St. Louis? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to St. Louis, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from San Diego to St. Louis

Find recent round-trip train or bus tickets from San Diego to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
10:40 am - 7:31 pmSAN-STL
6h 51m1 stop
7:09 pm - 12:29 amSTL-SAN
7h 20m1 stop
$108Frontier
Find Deal
jeu., janv. 16 - lun., janv. 20
12:55 pm - 7:31 pmSAN-STL
28h 36m1 stop
7:09 pm - 11:52 pmSTL-SAN
6h 43m1 stop
$117Frontier
Find Deal
mer., janv. 22 - mer., janv. 29
12:00 pm - 9:49 pmSAN-STL
7h 49m1 stop
5:00 pm - 11:58 pmSTL-SAN
8h 58m1 stop
$276Delta
Find Deal
mar., janv. 14 - mar., janv. 21
7:00 am - 4:28 pmSAN-STL
7h 28m1 stop
1:45 pm - 7:53 pmSTL-SAN
8h 08m2 stops
$281United Airlines
Find Deal
jeu., janv. 16 - mar., janv. 21
10:15 am - 8:43 pmSAN-STL
8h 28m2 stops
1:45 pm - 7:53 pmSTL-SAN
8h 08m2 stops
$286United Airlines
Find Deal
mer., janv. 22 - mer., janv. 29
12:39 pm - 9:10 pmSAN-STL
6h 31m1 stop
2:27 pm - 8:05 pmSTL-SAN
7h 38m1 stop
$307American Airlines
Find Deal
lun., janv. 6 - mer., janv. 8
3:15 pm - 10:25 pmSAN-STL
5h 10m1 stop
5:35 pm - 7:45 pmSTL-SAN
4h 10mnonstop
$343Southwest
Find Deal
mer., janv. 22 - sam., janv. 25
2:25 pm - 10:25 pmSAN-STL
6h 00m1 stop
5:35 pm - 7:45 pmSTL-SAN
4h 10mnonstop
$353Southwest
Find Deal
ven., janv. 24 - sam., janv. 25
5:10 pm - 12:37 amSAN-STL
5h 27m1 stop
6:30 am - 12:56 pmSTL-SAN
8h 26m1 stop
$397Delta
Find Deal
jeu., mai 22 - ven., mai 30
9:57 pm - 8:09 amSAN-STL
8h 12m1 stop
4:15 pm - 11:26 pmSTL-SAN
9h 11m1 stop
$558American Airlines
Find Deal
ven., mars 28 - dim., avr. 6
10:40 am - 7:31 pmSAN-STL
6h 51m1 stop
$54Frontier
Find Deal
jeu., janv. 23
10:40 am - 7:31 pmSAN-STL
6h 51m1 stop
$56Frontier
Find Deal
jeu., janv. 30
10:30 pm - 9:22 amSAN-STL
8h 52m1 stop
$138Delta
Find Deal
mar., janv. 21
10:00 pm - 9:36 amSAN-STL
9h 36m1 stop
$169Delta
Find Deal
ven., mars 21
8:20 am - 11:59 pmSAN-STL
13h 39m2 stops
$171Alaska Airlines
Find Deal
ven., janv. 24
9:40 am - 6:20 pmSAN-STL
6h 40m2 stops
$174Southwest
Find Deal
lun., févr. 24
7:00 am - 11:59 pmSAN-STL
14h 59m2 stops
$177Alaska Airlines
Find Deal
sam., mai 10
9:30 pm - 10:05 amSAN-STL
10h 35m1 stop
$183United Airlines
Find Deal
sam., févr. 22
7:43 pm - 10:54 amSAN-STL
13h 11m2 stops
$188United Airlines
Find Deal
mar., janv. 21
9:40 am - 6:20 pmSAN-STL
6h 40m2 stops
$204Southwest
Find Deal
ven., janv. 17
3:46 pm - 11:10 amSAN-STL
17h 24m1 stop
12:00 pm - 9:16 amSTL-SAN
23h 16m1 stop
$355Frontier
Find Deal
sam., déc. 28 - jeu., janv. 2
7:45 am - 12:28 amSAN-STL
14h 43m1 stop
5:00 am - 10:17 pmSTL-SAN
19h 17m1 stop
$790United Airlines
Find Deal
mer., déc. 25 - mar., déc. 31
7:45 am - 11:59 pmSAN-STL
14h 14m2 stops
6:25 am - 10:17 pmSTL-SAN
17h 52m1 stop
$795United Airlines
Find Deal
mer., déc. 25 - mar., déc. 31
7:16 pm - 12:10 pmSAN-STL
14h 54m3 stops
9:20 am - 4:46 pmSTL-SAN
33h 26m3 stops
sam., déc. 28 - jeu., janv. 2
7:13 pm - 10:47 amSAN-STL
13h 34m2 stops
8:50 am - 8:03 pmSTL-SAN
13h 13m2 stops
$879United Airlines
Find Deal
sam., déc. 28 - mar., déc. 31
11:10 am - 12:28 amSAN-STL
11h 18m1 stop
6:00 am - 11:06 amSTL-SAN
7h 06m1 stop
$885United Airlines
Find Deal
mer., déc. 25 - jeu., janv. 2
6:15 am - 8:26 pmSAN-STL
12h 11m2 stops
6:00 am - 11:06 amSTL-SAN
7h 06m1 stop
$890United Airlines
Find Deal
mer., déc. 25 - jeu., janv. 2
6:15 am - 8:26 pmSAN-STL
12h 11m2 stops
1:44 pm - 10:29 pmSTL-SAN
10h 45m2 stops
$895United Airlines
Find Deal
mer., déc. 25 - jeu., janv. 2
7:16 pm - 8:50 amSAN-STL
35h 34m3 stops
4:27 pm - 4:46 pmSTL-SAN
26h 19m3 stops
sam., déc. 28 - mar., déc. 31
6:25 pm - 11:55 pmSAN-STL
3h 30mnonstop
6:45 pm - 10:05 pmSTL-SAN
5h 20m1 stop
$988Southwest
Find Deal
sam., déc. 28 - jeu., janv. 2
6:10 pm - 11:40 pmSAN-STL
3h 30mnonstop
7:20 pm - 9:25 pmSTL-SAN
4h 05mnonstop
$435Southwest
Find Deal
lun., mars 17 - jeu., avr. 3

United Airlines flights from San Diego to St. Louis

Our best United Airlines deals on San Diego to St. Louis flight tickets
United Airlines
Jan 16
SAN7:00 amSan Diego
7h 28m
1 stop
STL4:28 pmLambert-St Louis
Jan 21
STL1:45 pmLambert-St Louis
8h 08m
2 stops
SAN7:53 pmSan Diego
United Airlines
Jan 22
SAN10:15 amSan Diego
8h 28m
2 stops
STL8:43 pmLambert-St Louis
Jan 29
STL1:45 pmLambert-St Louis
8h 08m
2 stops
SAN7:53 pmSan Diego
United Airlines
Jan 16
SAN10:15 amSan Diego
8h 28m
2 stops
STL8:43 pmLambert-St Louis
Jan 20
STL4:36 pmLambert-St Louis
7h 24m
1 stop
SAN10:00 pmSan Diego

Alaska Airlines flights from San Diego to St. Louis

Our best Alaska Airlines deals on San Diego to St. Louis flight tickets
Alaska Airlines
Jan 22
SAN6:52 pmSan Diego
17h 01m
1 stop
STL1:53 pmLambert-St Louis
Jan 29
STL2:49 pmLambert-St Louis
20h 28m
2 stops
SAN9:17 amSan Diego
Alaska Airlines
Feb 6
SAN9:55 pmSan Diego
24h 04m
2 stops
STL11:59 pmLambert-St Louis
Feb 10
STL2:49 pmLambert-St Louis
20h 28m
2 stops
SAN9:17 amSan Diego
Alaska Airlines
Jan 30
SAN5:29 pmSan Diego
18h 24m
1 stop
STL1:53 pmLambert-St Louis
Feb 2
STL7:00 amLambert-St Louis
12h 30m
2 stops
SAN5:30 pmSan Diego

See travel insights to St. Louis from

How to get the cheapest flight ticket from San Diego to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, August is the cheapest month to fly from San Diego to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $256. The month of May is another great option to travel to St. Louis, with average flight prices from San Diego averaging around $261.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $322. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $446. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from San Diego in the evening is the least expensive time of day to depart. momondo users have found prices as low as $198 when looking at flights departing in the evening. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $379 per ticket.

What is the cheapest San Diego to Lambert-St Louis flight route?

Fly from San Diego to Lambert-St Louis for the best San Diego - Lambert-St Louis flight prices

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

The best time to book a flight to St. Louis from San Diego is 47 days out, which is when prices tend to be around $350. In the past 72 hours, momondo users found flights from San Diego to St. Louis for as low as $210.

What cabin class options are available on San Diego to Lambert-St Louis flights?

There are 1 cabin classes available to choose from on San Diego to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on San Diego to St. Louis flights?

You could potentially save up to 73% on your flight if you consider stops on a San Diego to St. Louis flight.

How have San Diego to St. Louis flight prices changed over time?

As of December 2024, prices for San Diego to St. Louis flights are approximately 72% more expensive when compared to flights at the same time last year.

When to book flights from San Diego to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from San Diego to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Diego to St. Louis (SAN to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Diego to St. Louis

Best Price Found

$54

Fastest flight time

3h 25m

Direct flights

Mon, Tue, Fri, Sat and Sun

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from San Diego in the past 72 hours is $54. The best round-trip flight deal from San Diego to St. Louis found on momondo in the last 72 hours is $108.
The fastest flight from San Diego to St. Louis takes 3h 25m
Direct flights go from San Diego to St. Louis on Monday, Tuesday, Friday, Saturday and Sunday. The only airline offering direct flights is Southwest.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is San Diego to Lambert-St Louis by plane?

    Lambert-St Louis is 1560.0 mi away from San Diego. 3h 25m is a normal flight duration for this route.

  • When did momondo last update prices for flights from San Diego Airport to Lambert-St Louis Airport?

    Prices for flights from San Diego Airport to Lambert-St Louis Airport refresh daily.

  • How many operators does momondo search for flights from San Diego Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from San Diego Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Diego Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from San Diego to St. Louis?

  • What is the most popular airline from San Diego to St. Louis?


Best airlines flying from San Diego to St. Louis

Compare and see reviews for airlines that fly from San Diego to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $108Free CancellationRating
6.1
3,468 reviews
Search Frontier flights
DeltaPriceFrom $219Free CancellationRating
8.0
8,580 reviews
Search Delta flights
American AirlinesPriceFrom $235Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $256Free CancellationRating
7.4
9,009 reviews
Search United Airlines flights
SouthwestPriceFrom $347Free CancellationRating
8.1
4,765 reviews
Search Southwest flights
  • Southwest Flights From San Diego to St. Louis

    Southwest is one of the most popular airlines flying from San Diego to St. Louis, operating 12 flights/week on average for this route. A good Southwest flight deal for San Diego to St. Louis starts from $347 round-trip, up to an average price of $489. Our users have rated Southwest at 8.1/10.


Why use momondo?

Why should I use momondo to find a flight deal from San Diego to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Diego to St. Louis. momondo saves you time and could save you money on your trip.

Can I find flights from San Diego to St. Louis with flexible booking policies on momondo?

Flights from San Diego to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from San Diego to St. Louis?

Once all potential San Diego to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from San Diego to St. Louis right now. Can momondo alert me if prices change?

If you are not ready to book a flight from San Diego to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.


An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
dim. 12/29
dim. 1/5
Email me momondo's favorite deals

Find better results for your trip to the United States