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

American AirlinesAAAmerican Airlines
Round Trip•Economy
United StatesPHL

Philadelphia International Airport

Philadelphia, United States
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
$396 USD
-17%$329 USD
Verified 13 days ago
Good Availability
46% of dates checked are available within 10% of the lowest price

Thursday, July 9th, 2026

8 round-trip options

Returning
Tue, Jul 14, 2026•5 Day Trip
$458 USD
Google Flights
Returning
Wed, Jul 15, 2026•6 Day Trip
$468 USD
Google Flights
Returning
Thu, Jul 16, 2026•7 Day Trip
$531 USD
Google Flights
Returning
Fri, Jul 17, 2026•8 Day Trip
$531 USD
Google Flights
Returning
Sat, Jul 18, 2026•9 Day Trip
$572 USD
Google Flights
Returning
Sun, Jul 19, 2026•10 Day Trip
$573 USD
Google Flights
Returning
Wed, Jul 22, 2026•13 Day Trip
$458 USD
Google Flights
Returning
Thu, Jul 23, 2026•14 Day Trip
$521 USD
Google Flights