Flights to San Diego from Mascoutah

View ฿5,660 flight on Tue, 5 Aug 2025Opens in a new window

Popular airlines from Mascoutah to San Diego

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Cheap Flights from Mascoutah (STL) to San Diego (SAN)

Prices were available within the past 7 days and start at ฿5,660 for one-way flights and ฿10,830 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 5 Aug - Tue, 12 Aug
STL
St. Louis
SAN
San Diego
฿10,830 Return, found 1 day ago
฿10,830
Return
found 1 day ago
Select Delta flight, departing Tue, 5 Aug from St. Louis to San Diego, returning Tue, 12 Aug, priced at ฿10,830 found 1 day ago
American Airlines
Tue, 5 Aug - Tue, 12 Aug
STL
St. Louis
SAN
San Diego
฿12,230 Return, found 1 day ago
฿12,230
Return
found 1 day ago
Select American Airlines flight, departing Tue, 5 Aug from St. Louis to San Diego, returning Tue, 12 Aug, priced at ฿12,230 found 1 day ago
Delta
Tue, 5 Aug - Tue, 12 Aug
STL
St. Louis
SAN
San Diego
฿12,235 Return, found 1 day ago
฿12,235
Return
found 1 day ago
Select Delta flight, departing Tue, 5 Aug from St. Louis to San Diego, returning Tue, 12 Aug, priced at ฿12,235 found 1 day ago
United
Tue, 5 Aug - Tue, 12 Aug
STL
St. Louis
SAN
San Diego
฿12,295 Return, found 1 day ago
฿12,295
Return
found 1 day ago
Select United flight, departing Tue, 5 Aug from St. Louis to San Diego, returning Tue, 12 Aug, priced at ฿12,295 found 1 day ago
Delta
Tue, 5 Aug - Tue, 12 Aug
STL
St. Louis
SAN
San Diego
฿12,300 Return, found 1 day ago
฿12,300
Return
found 1 day ago
Select Delta flight, departing Tue, 5 Aug from St. Louis to San Diego, returning Tue, 12 Aug, priced at ฿12,300 found 1 day ago
Delta
Tue, 5 Aug - Tue, 12 Aug
STL
St. Louis
SAN
San Diego
฿12,390 Return, found 1 day ago
฿12,390
Return
found 1 day ago
Select Delta flight, departing Tue, 5 Aug from St. Louis to San Diego, returning Tue, 12 Aug, priced at ฿12,390 found 1 day ago

Find the cheapest month to fly from St. Louis (STL) to San Diego (SAN)

September is typically the cheapest month to fly

From ฿3,849 - ฿9,239 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.