$125 Cheap American Airlines flights St. Louis (STL) to San Diego (SAN)

View $125 flight on Sun, Jan 18, 2026Opens in a new window
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$125 Cheap American Airlines flights St. Louis (STL) to San Diego (SAN)

Prices were available within the past 7 days and start at $125 for one-way flights and $200 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Feb 19 - Sun, Feb 22
STL
St. Louis
SAN
San Diego
$200 Roundtrip, found 2 days ago
$200
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Feb 19 from St. Louis to San Diego, returning Sun, Feb 22, priced at $200 found 2 days ago
American Airlines
Sun, Jan 18 - Wed, Jan 21
STL
St. Louis
SAN
San Diego
$249 Roundtrip, found 3 hours ago
$249
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sun, Jan 18 from St. Louis to San Diego, returning Wed, Jan 21, priced at $249 found 3 hours ago

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Popular airline
Alaska Airlines
Distance
1554 mi
Average flight time
3 hours 30 mins

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