St Louis to San Diego
STLSAN
Fly from St Louis to San Diego starting at USD 123 with Southwest Airlines.
Best fare available on Jul 9, 2026.
Limited seats. Better plans. Book before it's gone.
St Louis to San Diego cheapest flights this week
St Louis to San Diego monthly flight fare trend
Jun
from USD 158
Jul
from USD 123
Aug
No flights
Sep
No flights
Oct
No flights
Nov
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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