St Louis to San Diego
STLSAN
Fly from St Louis to San Diego starting at USD 116 with Frontier Airlines.
Best fare available on Oct 1, 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
Jul
No flights
Aug
from USD 136
Sep
No flights
Oct
from USD 116
Nov
No flights
Dec
from USD 185
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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