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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 December 2025 , January 2026

19 Dec - 30 Jan $ 278.00
STL
St Louis
Frontier Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
Frontier Airlines
1 STOPS
STL
St Louis
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23 Dec - 08 Jan $ 574.00
STL
St Louis
Hawaiian Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
Hawaiian Airlines
1 STOPS
STL
St Louis
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18 Dec - 06 Jan $ 656.00
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

24 Dec - 31 Dec $ 581.00
STL
St Louis
United Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
United Airlines
1 STOPS
STL
St Louis
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24 Dec - 31 Dec $ 581.00
STL
St Louis
United Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
United Airlines
1 STOPS
STL
St Louis
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26 Dec - 31 Dec $ 776.00
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

8:42 PM - 8:30 AM
Frontier Airlines
1 Stops
14h 5m
STL - SAN
$ 207
Kiwi
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9:00 AM - 11:24 AM
United Airlines
1 Stops
5h 59m
STL - SAN
$ 292
Kiwi
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10:30 AM - 2:20 PM
United Airlines
1 Stops
7h 31m
STL - SAN
$ 292
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.