Cheap flights from St. Louis to San Diego from $56

Round-trip
1 adult
Economy
0 bags
From?
To?
Sat 8/13
Sat 8/20

Deals available from 900+ travel sites.

Flight information for St. Louis to San Diego
(STL to SAN)

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

Best Price Found

$56

Fastest flight time

5h 52m

Direct flights

None

Airports in San Diego

2 airports
The best one-way flight to San Diego from St. Louis in the past 72 hours is $56. The best round-trip flight deal from St. Louis to San Diego found on momondo in the last 72 hours is $122.
The fastest flight from St. Louis to San Diego takes 5h 52m
There are no direct flights from St. Louis to San Diego. Popular non-direct route for this connection is Lambert-St Louis Airport - San Diego Airport.
There are 2 airports near San Diego: San Diego (SAN), San Diego Carlsbad-Palomar (CLD)

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

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 from St. Louis to San Diego?

September

The cheapest time of year to fly to San Diego from St. Louis is September. Most expensive is June

What is the cheapest day to depart St. Louis for San Diego?

Tuesday

The cheapest day of the week is typically Tuesday. The most expensive is typically Sunday

When is the cheapest time to fly from St. Louis to San Diego?

in the evening

St. Louis to San Diego flights are approximately 35% more expensive in the morning than in the evening

What is the cheapest airline that flies to San Diego from St. Louis?

Juneyao Airlines

American Airlines, Frontier, and Juneyao Airlines are the most popular carriers operating from St. Louis to San Diego

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

Lambert-St Louis - San Diego

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

How far in advance should you book St. Louis to San Diego flights?

19 days before

The cheapest time to buy a flight from St. Louis to San Diego is approximately 19 days to departure

When traveling from St. Louis to San Diego, the most popular airport to fly into is San Diego Airport. The majority of travelers flying into San Diego Airport from St. Louis are departing from Lambert-St Louis Airport. If you are looking for an alternate airport near Lambert-St Louis Airport, Springfield Capital Airport is a great option and is located in Springfield. You may be looking for an airport near San Diego Airport to land at when traveling from St. Louis and luckily, there are options! You can try Ontario Airport which is located in Ontario, Santa Ana J. Wayne/Orange Cnty Airport which is located in Santa Ana, or Long Beach Municipal Airport which is located in Long Beach. In August, $122 is typically the cheapest round trip price you’ll find from St. Louis to San Diego which you can find when you fly STL — SAN.

Lambert-St Louis Airport (STL) to San Diego Airport (SAN)$122
Search Flight Deals
Lambert-St Louis Airport (STL) to Ontario Airport (ONT)$149
Search Flight Deals
Lambert-St Louis Airport (STL) to Santa Ana J. Wayne/Orange Cnty Airport (SNA)$139
Search Flight Deals
Lambert-St Louis Airport (STL) to Long Beach Municipal Airport (LGB)$364
Search Flight Deals
Lambert-St Louis Airport (STL) to Palm Springs Airport (PSP)$308
Search Flight Deals
Springfield Capital Airport (SPI) to Palm Springs Airport (PSP)$521
Search Flight Deals

Easily compare round-trip flights from St. Louis to San Diego

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from St. Louis to San Diego by changing tabs
Spirit Airlines
Sep 6
STL5:12 pmLambert-St Louis
12h 54m
1 stop
SAN6:06 amSan Diego
Sep 13
SAN3:00 amSan Diego
11h 17m
1 stop
STL2:17 pmLambert-St Louis
Multiple Airlines
Aug 23
STL5:12 pmLambert-St Louis
13h 16m
1 stop
SAN6:28 amSan Diego
Sep 2
SAN8:11 amSan Diego
20h 49m
1 stop
STL5:00 amLambert-St Louis
Frontier
Aug 26
STL7:33 amLambert-St Louis
7h 34m
1 stop
SAN3:07 pmSan Diego
Aug 31
SAN6:18 pmSan Diego
19h 00m
1 stop
STL1:18 pmLambert-St Louis
Spirit Airlines
Aug 29
STL5:12 pmLambert-St Louis
13h 16m
1 stop
SAN6:28 amSan Diego
Sep 3
SAN7:15 amSan Diego
6h 45m
1 stop
STL2:00 pmLambert-St Louis
Spirit Airlines
Sep 6
STL5:12 pmLambert-St Louis
12h 54m
1 stop
SAN6:06 amSan Diego
Sep 13
SAN3:00 amSan Diego
11h 17m
1 stop
STL2:17 pmLambert-St Louis
Multiple Airlines
Aug 23
STL5:12 pmLambert-St Louis
13h 16m
1 stop
SAN6:28 amSan Diego
Sep 2
SAN8:11 amSan Diego
20h 49m
1 stop
STL5:00 amLambert-St Louis

Find the cheapest one-way flights from St. Louis to San Diego

If you're looking for one-way flights from St. Louis to San Diego, view some of our deals below provided by Frontier and Spirit Airlines
Spirit Airlines
Aug 24
STL5:12 pmLambert-St Louis
13h 16m
1 stop
SAN6:28 amSan Diego
Frontier
Aug 31
STL8:59 amLambert-St Louis
10h 34m
1 stop
SAN7:33 pmSan Diego
Multiple Airlines
Aug 26
STL5:12 pmLambert-St Louis
12h 20m
1 stop
SAN5:32 amSan Diego

Search last-minute flights to San Diego from St. Louis

Find and compare round-trip flight prices for your last-minute flight from St. Louis to San Diego
Spirit Airlines
Aug 16
STL5:12 pmLambert-St Louis
13h 16m
1 stop
SAN6:28 amSan Diego
Aug 18
SAN5:25 amSan Diego
8h 35m
1 stop
STL2:00 pmLambert-St Louis
Multiple Airlines
Aug 13
STL7:33 amLambert-St Louis
7h 15m
1 stop
SAN2:48 pmSan Diego
Aug 20
SAN5:25 amSan Diego
8h 35m
1 stop
STL2:00 pmLambert-St Louis
Frontier
Aug 13
STL7:33 amLambert-St Louis
23h 21m
1 stop
SAN6:54 amSan Diego
Aug 17
SAN1:43 pmSan Diego
14h 55m
1 stop
STL4:38 amLambert-St Louis
Spirit Airlines
Aug 13
STL5:12 pmLambert-St Louis
13h 16m
1 stop
SAN6:28 amSan Diego
Aug 17
SAN4:00 amSan Diego
10h 00m
1 stop
STL2:00 pmLambert-St Louis
Multiple Airlines
Aug 18
STL5:12 pmLambert-St Louis
13h 16m
1 stop
SAN6:28 amSan Diego
Aug 21
SAN5:05 pmSan Diego
12h 31m
1 stop
STL5:36 amLambert-St Louis
Spirit Airlines
Aug 15
STL5:12 pmLambert-St Louis
13h 16m
1 stop
SAN6:28 amSan Diego
Aug 19
SAN7:15 amSan Diego
6h 45m
1 stop
STL2:00 pmLambert-St Louis

Best airlines flying from St. Louis to San Diego

Compare and see reviews for airlines that fly from St. Louis to San Diego with momondo
AirlineRatingFree CancellationPrice
Juneyao AirlinesPriceFrom $16Free CancellationRating
0.0
Search Juneyao Airlines flights
Spirit AirlinesPriceFrom $52Free CancellationRating
6.3
6.5

Boarding

5.9

Comfort

7.0

Crew

4.9

Entertainment

5.1

Food

Reviews

I liked the notification e-mails I received since there was a delay returning back home. The staff members were friendly & funny.

1 / 10
Search Spirit Airlines flights
FrontierPriceFrom $104Free CancellationRating
6.2
6.4

Boarding

5.8

Comfort

7.0

Crew

4.7

Entertainment

5.0

Food

Reviews

Flight was extremely delayex

1 / 10
Search Frontier flights
United AirlinesPriceFrom $161Free CancellationRating
7.1
7.5

Boarding

7.1

Comfort

8.0

Crew

6.9

Entertainment

6.5

Food

Reviews

hot and noisy flight- someone a few rows back had speaker on for game while wearing headphones and blissfully unaware.

1 / 10
Search United Airlines flights
DeltaPriceFrom $237Free CancellationRating
7.8
7.9

Boarding

8.0

Comfort

8.3

Crew

7.7

Entertainment

7.3

Food

Reviews

This is another disease as if you have the Internet, you are ordinary deceivers!

1 / 10
Search Delta flights
Alaska AirlinesPriceFrom $275Free CancellationRating
8.1
8.3

Boarding

8.0

Comfort

8.6

Crew

7.2

Entertainment

7.2

Food

Reviews

They upgraded me to first class with my sister

1 / 10
Search Alaska Airlines flights
American AirlinesPriceFrom $286Free CancellationRating
7.0
7.3

Boarding

7.1

Comfort

7.9

Crew

6.8

Entertainment

6.4

Food

Reviews

Never made it connecting flight was canceled. Waste of $$$

1 / 10
Search American Airlines flights
  • Southwest Flights From St. Louis to San Diego

    The lowest priced Southwest flight from St. Louis to San Diego from the last 72 hours was $281. Generally, Southwest has 20 flights on this route every week with an average price of $490. Southwest is rated 7.5/10 by our users.


Spirit Airlines flights from St. Louis to San Diego

Our best Spirit Airlines deals on St. Louis to San Diego flight tickets
Spirit Airlines
Sep 6
STL5:12 pmLambert-St Louis
12h 54m
1 stop
SAN6:06 amSan Diego
Sep 13
SAN3:00 amSan Diego
11h 17m
1 stop
STL2:17 pmLambert-St Louis
Spirit Airlines
Aug 29
STL5:12 pmLambert-St Louis
13h 16m
1 stop
SAN6:28 amSan Diego
Sep 3
SAN7:15 amSan Diego
6h 45m
1 stop
STL2:00 pmLambert-St Louis
Spirit Airlines
Sep 6
STL5:12 pmLambert-St Louis
12h 54m
1 stop
SAN6:06 amSan Diego
Sep 13
SAN3:00 amSan Diego
11h 17m
1 stop
STL2:17 pmLambert-St Louis

Frontier flights from St. Louis to San Diego

Our best Frontier deals on St. Louis to San Diego flight tickets
Frontier
Aug 26
STL7:33 amLambert-St Louis
7h 34m
1 stop
SAN3:07 pmSan Diego
Aug 31
SAN6:18 pmSan Diego
19h 00m
1 stop
STL1:18 pmLambert-St Louis
Frontier
Aug 26
STL7:33 amLambert-St Louis
7h 34m
1 stop
SAN3:07 pmSan Diego
Aug 30
SAN5:37 pmSan Diego
12h 27m
1 stop
STL6:04 amLambert-St Louis
Frontier
Aug 30
STL4:13 pmLambert-St Louis
17h 08m
1 stop
SAN9:21 amSan Diego
Sep 1
SAN6:22 pmSan Diego
11h 14m
1 stop
STL5:36 amLambert-St Louis

  • Are airlines flying from Lambert-St Louis to San Diego offering flexible cancellation due to COVID-19?

    To ease the stress of booking flights, some of our airline partners flying from Lambert-St Louis to San Diego are responding to the global pandemic. The following airlines may have a flexible cancellation policy to help accommodate travelers: American Airlines, Frontier, and United Airlines.

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

    There are 1560.0 mi between Lambert-St Louis and San Diego. By plane, this route typically takes 5h 49m.



Alternative routes for St. Louis to San Diego

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Kansas City to Los Angeles Flights
Fastest flight time3h 27m
Cheapest price$135
St. Louis to Los Angeles Flights
Fastest flight time3h 53m
Cheapest price$134
Kansas City to San Francisco Flights
Fastest flight time3h 50m
Cheapest price$163
Kansas City to San Diego Flights
Fastest flight time5h 44m
Cheapest price$154
St. Louis to San Francisco Flights
Fastest flight time4h 33m
Cheapest price$153
Kansas City to Ontario Flights
Fastest flight time5h 50m
Cheapest price$207
Kansas City to Santa Ana Flights
Fastest flight time7h 00m
Cheapest price$154
St. Louis to Ontario Flights
Fastest flight time5h 34m
Cheapest price$149
St. Louis to Santa Ana Flights
Fastest flight time5h 50m
Cheapest price$139
Kansas City to Sacramento Flights
Fastest flight time5h 36m
Cheapest price$160
Kansas City to Oakland, California Flights
Fastest flight time6h 27m
Cheapest price$151
Kansas City to Burbank Flights
Fastest flight time5h 10m
Cheapest price$154

Similar St. Louis to San Diego flights

Flexible with your destination? Broaden your search and find flights similar to your St. Louis to San Diego route

Why use momondo?

Finding the right flight to San Diego from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Diego quick and easy, saving you time and money.

Flights from St. Louis to San Diego 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.

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to San Diego.

Yes momondo offers price alerts on flights to San Diego from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


Here's why travelers choose to use momondo
Flexible Travel
momondo understands the need for flexibility and we have a filter specifically for flights with no change fees.
Expert Insights
Data driven insights designed to help you find a great flight deal. From the cheapest time to depart to how far in advance to book.
Price Alerts
Track the price of your preferred flight route and be notified when it changes.