Find the Cheapest Flights from Portland to San Diego

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

Mon, Apr 13PDX-SAN
Frontier Airlines

oneway$157

Fri, May 22PDX-SAN
Alaska Airlines

$311

Portland to San Diego: Flight information

Cheapest flight found$157

Cheapest month to flyApril

Most popular airlineFrontier Airlines

Average flight duration19h 36m

Cheapest flight found

Apr 2026

$157

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