CA $172 Cheap American Airlines fights from Ontario (ONT) to San Diego (SAN)

View CA $172 flight on Sun, Aug. 24, 2025Opens in a new window

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American Airlines flights from Ontario to San Diego (ONT→SAN)

Prices were available within the past 7 days and start at CA $172 for one-way flights and CA $427 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sun, Nov. 16 - Mon, Nov. 17
ONT
Ontario
SAN
San Diego
CA $427 Roundtrip, found 5 days ago
CA $427
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, Nov. 16 from Ontario to San Diego, returning Mon, Nov. 17, priced at CA $427 found 5 days ago
American Airlines
Sun, Nov. 16 - Mon, Nov. 17
ONT
Ontario
SAN
San Diego
CA $538 Roundtrip, found 5 days ago
CA $538
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, Nov. 16 from Ontario to San Diego, returning Mon, Nov. 17, priced at CA $538 found 5 days ago
American Airlines
Sun, Nov. 16 - Mon, Nov. 17
ONT
Ontario
SAN
San Diego
CA $592 Roundtrip, found 5 days ago
CA $592
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, Nov. 16 from Ontario to San Diego, returning Mon, Nov. 17, priced at CA $592 found 5 days ago
American Airlines
Sun, Nov. 16 - Mon, Nov. 17
ONT
Ontario
SAN
San Diego
CA $594 Roundtrip, found 5 days ago
CA $594
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, Nov. 16 from Ontario to San Diego, returning Mon, Nov. 17, priced at CA $594 found 5 days ago
American Airlines
Sun, Nov. 16 - Mon, Nov. 17
ONT
Ontario
SAN
San Diego
CA $621 Roundtrip, found 5 days ago
CA $621
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, Nov. 16 from Ontario to San Diego, returning Mon, Nov. 17, priced at CA $621 found 5 days ago
American Airlines
Sun, Nov. 16 - Mon, Nov. 17
ONT
Ontario
SAN
San Diego
CA $637 Roundtrip, found 5 days ago
CA $637
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, Nov. 16 from Ontario to San Diego, returning Mon, Nov. 17, priced at CA $637 found 5 days ago
Flight from Ontario to San Diego (ONT - SAN) route information
Origin airport
Los Angeles - Ontario Intl.
Destination airport
San Diego Intl.
Distance
151 km
*Available to Expedia members.