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

Thursday, August 6th, 2026

8 round-trip options

Returning
Thu, Aug 13, 20267 Day Trip
$588 USD
Returning
Fri, Aug 14, 20268 Day Trip
$585 USD
Returning
Sat, Aug 15, 20269 Day Trip
$644 USD
Returning
Sun, Aug 16, 202610 Day Trip
$689 USD
Returning
Mon, Aug 17, 202611 Day Trip
$652 USD
Returning
Tue, Aug 18, 202612 Day Trip
$499 USD
Returning
Wed, Aug 19, 202613 Day Trip
$498 USD
Returning
Thu, Aug 20, 202614 Day Trip
$550 USD