Cheap flights from St. Louis to North Central San Diego from CA $190

View CA $190 flight on Mon, Oct. 20, 2025Opens in a new window

Popular airlines from St. Louis to North Central San Diego

  • Air Canada

    Air Canada

  • WestJet

    WestJet

  • Flair Airlines

    Flair Airlines

  • American Airlines

    American Airlines

  • United

    United

  • Delta

    Delta

  • Porter Airlines

    Porter Airlines

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Cheap flights from St. Louis (STL) to North Central San Diego (SAN)

Prices were available within the past 7 days and start at CA $190 for one-way flights and CA $517 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Feb. 17 - Sat, Feb. 21
STL
St. Louis
CLD
Carlsbad
CA $517 Roundtrip, found 4 days ago
CA $517
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Feb. 17 from St. Louis to Carlsbad, returning Sat, Feb. 21, priced at CA $517 found 4 days ago
Delta
Tue, Feb. 17 - Sat, Feb. 21
STL
St. Louis
SAN
San Diego
CA $517 Roundtrip, found 4 days ago
CA $517
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Feb. 17 from St. Louis to San Diego, returning Sat, Feb. 21, priced at CA $517 found 4 days ago
American Airlines
Tue, Feb. 17 - Sat, Feb. 21
STL
St. Louis
SAN
San Diego
CA $517 Roundtrip, found 4 days ago
CA $517
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Feb. 17 from St. Louis to San Diego, returning Sat, Feb. 21, priced at CA $517 found 4 days ago
American Airlines
Tue, Feb. 17 - Sat, Feb. 21
STL
St. Louis
SAN
San Diego
CA $522 Roundtrip, found 4 days ago
CA $522
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Feb. 17 from St. Louis to San Diego, returning Sat, Feb. 21, priced at CA $522 found 4 days ago
United
Tue, Feb. 17 - Sat, Feb. 21
STL
St. Louis
SAN
San Diego
CA $583 Roundtrip, found 4 days ago
CA $583
Roundtrip
found 4 days ago
Select United flight, departing Tue, Feb. 17 from St. Louis to San Diego, returning Sat, Feb. 21, priced at CA $583 found 4 days ago
Alaska Airlines
Tue, Feb. 17 - Sat, Feb. 21
STL
St. Louis
SAN
San Diego
CA $590 Roundtrip, found 4 days ago
CA $590
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Feb. 17 from St. Louis to San Diego, returning Sat, Feb. 21, priced at CA $590 found 4 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 CA $162 - CA $418 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.