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Cheap flights from St Louis (STL) to San Diego (SAN)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from St Louis (STL) to San Diego (SAN)

How to find the cheapest flight from St Louis (STL) to San Diego (SAN)
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How to find the cheapest flight from St Louis (STL) to San Diego (SAN)
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How to find the cheapest flight from St Louis (STL) to San Diego (SAN)
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Cheap flights from St Louis to San Diego in September , October 2026

26 Sep - 28 Oct $ 262.00
STL
St Louis
Frontier Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
Frontier Airlines
1 STOPS
STL
St Louis
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16 Sep - 02 Oct $ 321.00
STL
St Louis
Frontier Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
Frontier Airlines
1 STOPS
STL
St Louis
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12 Sep - 01 Oct $ 402.00
STL
St Louis
Alaska Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
Alaska Airlines
1 STOPS
STL
St Louis
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Last minute flights from St Louis to San Diego

26 Sep - 30 Sep $ 290.00
STL
St Louis
Alaska Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
Alaska Airlines
1 STOPS
STL
St Louis
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16 Sep - 01 Oct $ 321.00
STL
St Louis
Frontier Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
Frontier Airlines
1 STOPS
STL
St Louis
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16 Sep - 30 Sep $ 338.00
STL
St Louis
Alaska Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
Alaska Airlines
1 STOPS
STL
St Louis
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One-way flights to San Diego from St Louis

8:10 PM - 10:29 PM
Frontier Airlines
1 Stops
5h 41m
STL - SAN
$ 131
Kiwi
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8:10 PM - 10:29 PM
Frontier Airlines
1 Stops
5h 41m
STL - SAN
$ 184
Kiwi
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1:36 PM - 3:43 PM
United Airlines
1 Stops
5h 33m
STL - SAN
$ 254
Kiwi
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How to find the cheapest flight from St Louis (STL) to San Diego (SAN)

Related info for your journey
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How to find the cheapest flight from St Louis (STL) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.