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

Monday, October 12th, 2026

5 round-trip options

Returning
Sat, Oct 17, 2026•5 Day Trip
$423 USD
Google Flights
Returning
Sun, Oct 18, 2026•6 Day Trip
$517 USD
Google Flights
Returning
Tue, Oct 20, 2026•8 Day Trip
$423 USD
Google Flights
Returning
Thu, Oct 22, 2026•10 Day Trip
$423 USD
Google Flights
Returning
Mon, Oct 26, 2026•14 Day Trip
$423 USD
Google Flights