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 $571 round trip and CA $376 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $571 Roundtrip, found 6 days ago
CA $571
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $571 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $579 Roundtrip, found 6 days ago
CA $579
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $579 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $635 Roundtrip, found 6 days ago
CA $635
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $635 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $641 Roundtrip, found 6 days ago
CA $641
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $641 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $647 Roundtrip, found 6 days ago
CA $647
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $647 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $682 Roundtrip, found 6 days ago
CA $682
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $682 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $694 Roundtrip, found 6 days ago
CA $694
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $694 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $696 Roundtrip, found 6 days ago
CA $696
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $696 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $745 Roundtrip, found 6 days ago
CA $745
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $745 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $747 Roundtrip, found 6 days ago
CA $747
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $747 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $779 Roundtrip, found 6 days ago
CA $779
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $779 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $780 Roundtrip, found 6 days ago
CA $780
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $780 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $841 Roundtrip, found 6 days ago
CA $841
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $841 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $847 Roundtrip, found 6 days ago
CA $847
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $847 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $859 Roundtrip, found 6 days ago
CA $859
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $859 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $861 Roundtrip, found 6 days ago
CA $861
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $861 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $877 Roundtrip, found 6 days ago
CA $877
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $877 found 6 days ago
Thu, Nov. 6 - Sun, Nov. 9
STL
St. Louis
SAN
San Diego
CA $892 Roundtrip, found 6 days ago
CA $892
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Nov. 6 from St. Louis to San Diego, returning Sun, Nov. 9, priced at CA $892 found 6 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.