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 $535 round trip and CA $331 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Apr 16 - Tue, Apr 21
STL
St. Louis
SAN
San Diego
CA $535 Roundtrip, found 4 days ago
CA $535
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Apr 16 from St. Louis to San Diego, returning Tue, Apr 21, priced at CA $535 found 4 days ago
Thu, Apr 16 - Tue, Apr 21
STL
St. Louis
SAN
San Diego
CA $536 Roundtrip, found 4 days ago
CA $536
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Apr 16 from St. Louis to San Diego, returning Tue, Apr 21, priced at CA $536 found 4 days ago
Thu, Apr 16 - Tue, Apr 21
STL
St. Louis
SAN
San Diego
CA $565 Roundtrip, found 4 days ago
CA $565
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Apr 16 from St. Louis to San Diego, returning Tue, Apr 21, priced at CA $565 found 4 days ago
Thu, Apr 16 - Tue, Apr 21
STL
St. Louis
SAN
San Diego
CA $597 Roundtrip, found 4 days ago
CA $597
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Apr 16 from St. Louis to San Diego, returning Tue, Apr 21, priced at CA $597 found 4 days ago
Thu, Apr 16 - Tue, Apr 21
STL
St. Louis
SAN
San Diego
CA $598 Roundtrip, found 4 days ago
CA $598
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Apr 16 from St. Louis to San Diego, returning Tue, Apr 21, priced at CA $598 found 4 days ago
Thu, Apr 16 - Tue, Apr 21
STL
St. Louis
SAN
San Diego
CA $601 Roundtrip, found 4 days ago
CA $601
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Apr 16 from St. Louis to San Diego, returning Tue, Apr 21, priced at CA $601 found 4 days ago
Thu, Apr 16 - Tue, Apr 21
STL
St. Louis
SAN
San Diego
CA $607 Roundtrip, found 4 days ago
CA $607
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Apr 16 from St. Louis to San Diego, returning Tue, Apr 21, priced at CA $607 found 4 days ago
Thu, Apr 16 - Tue, Apr 21
STL
St. Louis
SAN
San Diego
CA $627 Roundtrip, found 4 days ago
CA $627
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Apr 16 from St. Louis to San Diego, returning Tue, Apr 21, priced at CA $627 found 4 days ago
Thu, Apr 16 - Tue, Apr 21
STL
St. Louis
SAN
San Diego
CA $653 Roundtrip, found 4 days ago
CA $653
Roundtrip
found 4 days ago
Select United flight, departing Thu, Apr 16 from St. Louis to San Diego, returning Tue, Apr 21, priced at CA $653 found 4 days ago
Thu, Apr 16 - Tue, Apr 21
STL
St. Louis
SAN
San Diego
CA $663 Roundtrip, found 4 days ago
CA $663
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Apr 16 from St. Louis to San Diego, returning Tue, Apr 21, priced at CA $663 found 4 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.

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*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.