Flights to San Diego from Collinsville

View ฿5,220 flight on Sat, 16 Aug 2025Opens in a new window

Popular airlines from Collinsville to San Diego

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

Prices were available within the past 7 days and start at ฿5,220 for one-way flights and ฿10,430 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 16 Aug - Sat, 23 Aug
STL
St. Louis
SAN
San Diego
฿10,430 Return, found 5 days ago
฿10,430
Return
found 5 days ago
Select Delta flight, departing Sat, 16 Aug from St. Louis to San Diego, returning Sat, 23 Aug, priced at ฿10,430 found 5 days ago
Delta
Sat, 16 Aug - Sat, 23 Aug
STL
St. Louis
SAN
San Diego
฿11,910 Return, found 5 days ago
฿11,910
Return
found 5 days ago
Select Delta flight, departing Sat, 16 Aug from St. Louis to San Diego, returning Sat, 23 Aug, priced at ฿11,910 found 5 days ago
American Airlines
Sat, 16 Aug - Sat, 23 Aug
STL
St. Louis
SAN
San Diego
฿11,975 Return, found 5 days ago
฿11,975
Return
found 5 days ago
Select American Airlines flight, departing Sat, 16 Aug from St. Louis to San Diego, returning Sat, 23 Aug, priced at ฿11,975 found 5 days ago
United
Sat, 16 Aug - Sat, 23 Aug
STL
St. Louis
SAN
San Diego
฿12,070 Return, found 5 days ago
฿12,070
Return
found 5 days ago
Select United flight, departing Sat, 16 Aug from St. Louis to San Diego, returning Sat, 23 Aug, priced at ฿12,070 found 5 days ago
American Airlines
Sat, 16 Aug - Sat, 23 Aug
STL
St. Louis
CLD
Carlsbad
฿13,215 Return, found 5 days ago
฿13,215
Return
found 5 days ago
Select American Airlines flight, departing Sat, 16 Aug from St. Louis to Carlsbad, returning Sat, 23 Aug, priced at ฿13,215 found 5 days ago
Delta
Sat, 16 Aug - Sat, 23 Aug
STL
St. Louis
SAN
San Diego
฿13,220 Return, found 5 days ago
฿13,220
Return
found 5 days ago
Select Delta flight, departing Sat, 16 Aug from St. Louis to San Diego, returning Sat, 23 Aug, priced at ฿13,220 found 5 days ago

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

September is typically the cheapest month to fly

From ฿3,828 - ฿9,884 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.