Seattle / Tacoma (SEA) to Portland (PWM) flight deal in economy from $315

Saturday, August 15th, 2026

8 round-trip options

Returning
Sat, Aug 22, 20267 Day Trip
$500 USD
Returning
Sun, Aug 23, 20268 Day Trip
$598 USD
Returning
Mon, Aug 24, 20269 Day Trip
$529 USD
Returning
Tue, Aug 25, 202610 Day Trip
$401 USD
Returning
Wed, Aug 26, 202611 Day Trip
$429 USD
Returning
Thu, Aug 27, 202612 Day Trip
$467 USD
Returning
Fri, Aug 28, 202613 Day Trip
$515 USD
Returning
Sat, Aug 29, 202614 Day Trip
$490 USD