Seattle / Tacoma (SEA) to Philadelphia (PHL) flight deal in economy from $329

Friday, July 17th, 2026

6 round-trip options

Returning
Thu, Jul 23, 20266 Day Trip
$551 USD
Returning
Fri, Jul 24, 20267 Day Trip
$531 USD
Returning
Sun, Jul 26, 20269 Day Trip
$469 USD
Returning
Mon, Jul 27, 202610 Day Trip
$469 USD
Returning
Tue, Jul 28, 202611 Day Trip
$458 USD
Returning
Wed, Jul 29, 202612 Day Trip
$468 USD