St Louis to San Diego
STLSAN
Fly from St Louis to San Diego starting at USD 117 with UA.
Best fare available on May 20, 2026.
Limited seats. Better plans. Book before it's gone.
St Louis to San Diego cheapest flights this week
20 May
UA
17:59STL
--:--SAN
1 Stop$117VIEW DEAL
21 May
AA
19:20STL
--:--SAN
1 Stop$205VIEW DEAL
St Louis to San Diego monthly flight fare trend
Apr
No flights
May
from USD 117
Jun
No flights
Jul
No flights
Aug
No flights
Sep
No flights
Airport Details
Origin
St Louis
St. Louis Lambert International Airport (STL)
St Louis, STL
Zone
Chicago
Elev
618 ft
Destination
San Diego
San Diego International Airport (SAN)
San Diego, SAN
Zone
Los Angeles
Elev
17 ft
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