Cheap Flights From Lambert-St. Louis Intl. (STL) To San Diego Intl. (SAN)

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Cheapest Flights from St. Louis (STL) to San Diego (SAN)

The cheapest flights to San Diego Intl. found within the past 7 days were CA $251 round trip and CA $126 one way. Prices and availability subject to change. Additional terms may apply.

Tue, Oct. 7 - Sat, Oct. 11
STL
St. Louis
CLD
Carlsbad
CA $251 Roundtrip, found 5 days ago
CA $251
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Oct. 7 from St. Louis to Carlsbad, returning Sat, Oct. 11, priced at CA $251 found 5 days ago
Tue, Oct. 7 - Sat, Oct. 11
STL
St. Louis
SAN
San Diego
CA $251 Roundtrip, found 5 days ago
CA $251
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Oct. 7 from St. Louis to San Diego, returning Sat, Oct. 11, priced at CA $251 found 5 days ago
Tue, Oct. 7 - Sat, Oct. 11
STL
St. Louis
SAN
San Diego
CA $342 Roundtrip, found 5 days ago
CA $342
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Oct. 7 from St. Louis to San Diego, returning Sat, Oct. 11, priced at CA $342 found 5 days ago
Tue, Oct. 7 - Sat, Oct. 11
STL
St. Louis
SAN
San Diego
CA $349 Roundtrip, found 5 days ago
CA $349
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Oct. 7 from St. Louis to San Diego, returning Sat, Oct. 11, priced at CA $349 found 5 days ago
Tue, Oct. 7 - Sat, Oct. 11
STL
St. Louis
SAN
San Diego
CA $373 Roundtrip, found 5 days ago
CA $373
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Oct. 7 from St. Louis to San Diego, returning Sat, Oct. 11, priced at CA $373 found 5 days ago
Tue, Oct. 7 - Sat, Oct. 11
STL
St. Louis
SAN
San Diego
CA $376 Roundtrip, found 5 days ago
CA $376
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Oct. 7 from St. Louis to San Diego, returning Sat, Oct. 11, priced at CA $376 found 5 days ago
Tue, Oct. 7 - Sat, Oct. 11
STL
St. Louis
SAN
San Diego
CA $396 Roundtrip, found 5 days ago
CA $396
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Oct. 7 from St. Louis to San Diego, returning Sat, Oct. 11, priced at CA $396 found 5 days ago
Tue, Oct. 7 - Sat, Oct. 11
STL
St. Louis
SAN
San Diego
CA $432 Roundtrip, found 5 days ago
CA $432
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Oct. 7 from St. Louis to San Diego, returning Sat, Oct. 11, priced at CA $432 found 5 days ago
Tue, Oct. 7 - Sat, Oct. 11
STL
St. Louis
SAN
San Diego
CA $438 Roundtrip, found 5 days ago
CA $438
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Oct. 7 from St. Louis to San Diego, returning Sat, Oct. 11, priced at CA $438 found 5 days ago
Tue, Oct. 7 - Sat, Oct. 11
STL
St. Louis
SAN
San Diego
CA $458 Roundtrip, found 5 days ago
CA $458
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Oct. 7 from St. Louis to San Diego, returning Sat, Oct. 11, priced at CA $458 found 5 days ago

Frequently asked questions

Are there direct flights from STL to San Diego Airport?
For a hassle-free trip between St. Louis and San Diego County, try Southwest Airlines. This airline operates direct flights from Lambert-St. Louis Intl. Airport (STL) to SAN.
What airlines fly from St. Louis Lambert International Airport to SAN?
With Southwest Airlines, you won't have to bother with extended layovers or standing around waiting for your next flight. This airline will take you nonstop from St. Louis Lambert International Airport to SAN on one of the 30 flights offered on this route each month.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.