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Find the Cheapest Flights from San Diego to San Antonio International Airport

Unlock the cheapest flights and the best airfares from San Diego to San Antonio International Airport. Make your dream trip both memorable and affordable!

Airline Frontier Airlines icon
Tue, May 12SAN-SAT
Frontier Airlines
oneway$80
Airline American Airlines icon
Thu, Oct 15SAN-SAT
American Airlines
$358

San Diego to San Antonio International Airport: Flight information

Cheapest flight found$80
Cheapest month to flyMay
Most popular airlineFrontier Airlines
Average flight duration10h 34m

Cheapest flight found

May 2026

$80

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