$115 Cheap Frontier Airlines flights St. Louis (STL) to San Diego (SAN)

View $115 flight on Tue, Sep 9, 2025Opens in a new window

$115 Cheap Frontier Airlines flights St. Louis (STL) to San Diego (SAN)

Prices were available within the past 7 days and start at $115 for one-way flights and $231 for roundtrip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Frontier Airlines
Sat, Jun 14 - Tue, Jun 17
STL
St. Louis
SAN
San Diego
$231
Roundtrip
Found 2 days ago
Select Frontier Airlines flight, departing Sat, Jun 14 from St. Louis to San Diego, returning Tue, Jun 17, priced at $231 Found 2 days ago
Frontier Airlines
Sat, Jun 14 - Fri, Jun 20
STL
St. Louis
SAN
San Diego
$236
Roundtrip
Found 2 days ago
Select Frontier Airlines flight, departing Sat, Jun 14 from St. Louis to San Diego, returning Fri, Jun 20, priced at $236 Found 2 days ago
Frontier Airlines
Mon, Jun 16 - Tue, Jun 17
STL
St. Louis
SAN
San Diego
$240
Roundtrip
Found 2 days ago
Select Frontier Airlines flight, departing Mon, Jun 16 from St. Louis to San Diego, returning Tue, Jun 17, priced at $240 Found 2 days ago
Frontier Airlines
Mon, Jun 16 - Fri, Jun 20
STL
St. Louis
SAN
San Diego
$245
Roundtrip
Found 2 days ago
Select Frontier Airlines flight, departing Mon, Jun 16 from St. Louis to San Diego, returning Fri, Jun 20, priced at $245 Found 2 days ago
Frontier Airlines
Thu, Jun 26 - Fri, Jul 4
STL
St. Louis
SAN
San Diego
$250
Roundtrip
Found 5 days ago
Select Frontier Airlines flight, departing Thu, Jun 26 from St. Louis to San Diego, returning Fri, Jul 4, priced at $250 Found 5 days ago
Frontier Airlines
Fri, Jun 13 - Tue, Jun 17
STL
St. Louis
SAN
San Diego
$258
Roundtrip
Found 2 days ago
Select Frontier Airlines flight, departing Fri, Jun 13 from St. Louis to San Diego, returning Tue, Jun 17, priced at $258 Found 2 days ago
Frontier Airlines
Sat, Jun 21 - Fri, Jun 27
STL
St. Louis
SAN
San Diego
$260
Roundtrip
Just found
Select Frontier Airlines flight, departing Sat, Jun 21 from St. Louis to San Diego, returning Fri, Jun 27, priced at $260 Just found
Frontier Airlines
Fri, Jun 13 - Fri, Jun 20
STL
St. Louis
SAN
San Diego
$263
Roundtrip
Found 2 days ago
Select Frontier Airlines flight, departing Fri, Jun 13 from St. Louis to San Diego, returning Fri, Jun 20, priced at $263 Found 2 days ago
Flights from St. Louis (STL) to San Diego (SAN)
Origin airport
Lambert-St. Louis Intl.
Destination airport
San Diego Intl.
Distance
2487 km
Average flight time
3 hours 23 mins