Flights from St. Louis to San Diego

Our cheapest offers for flights from St. Louis to San Diego

Here you can compare cheap flights from St. Louis (STL) to San Diego (SAN) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to San Diego. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Best option
St. Louis
San Diego
Outbound
04/12/25
1 Stopover (DEN)
F94567, F94927
18h 38min
Return
04/27/25
1 Stopover (DEN)
F92422, F93302
11h 11min
Frontier Airlines
$122
St. Louis
San Diego
Outbound
04/12/25
1 Stopover (DEN)
F94567, F94927
18h 38min
Return
04/27/25
1 Stopover (DEN)
F92422, F93302
11h 11min
Frontier Airlines
$125
St. Louis
San Diego
Outbound
04/12/25
1 Stopover (DEN)
F94567, F94927
18h 38min
Return
04/27/25
1 Stopover (DEN)
F92422, F93302
11h 11min
Frontier Airlines ?
$199
St. Louis
San Diego
Outbound
04/12/25
1 Stopover (DEN)
UA1303, UA0540
06h 20min
Return
04/27/25
1 Stopover (EWR)
UA1827, UA2100
14h 12min
United Airlines ?
$431
St. Louis
San Diego
Outbound
04/12/25
1 Stopover (DFW)
AS4122, AS4112
06h 27min
Return
04/27/25
1 Stopover (DFW)
AS6783, AS4121
07h 40min
Alaska Airlines ?
$480
St. Louis
San Diego
Outbound
04/12/25
1 Stopover (SEA)
AS0388, AS0206
08h 38min
Return
04/27/25
1 Stopover (SEA)
AS1137, AS0472
10h 23min
Alaska Airlines
$731
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from St. Louis to San Diego

Favorite airline: Spirit Airlines
The most popular airline for flights from St. Louis to San Diego is Spirit Airlines.
Spirit Airlines
40 %
Frontier Airlines
33 %
Delta
20 %
Favourite connection: via Las Vegas
On this route, flights with a stopover in Las Vegas are the most popular.
Route
bookings
1 stopover Las Vegas - McCarran International Airport, NV
09h 06min, from $ 254
50 %
1 stopover Denver International Airport, CO
06h 23min, from $ 217
42 %
1 stopover Detroit Metropolitan Wayne County Airport, MI
09h 54min, from $ 342
8 %

Important flight information

Flight information: St. Louis - San Diego

Roundtrip from $ 121,57
Flight duration min. 04:05 / max. 14:00
Return flight duration min. 03:20/ max. 08:00
Distance 2504 km
Flights per week 48
Departure airport Airport St. Louis - Lambert International Airport (STL)
Arrival airport Airport San Diego - Lindberg Field International, CA (SAN)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to San Diego
Flight destinations with a similar price
Flight destinations with a similar price