Philadelphia (PHL) to Seattle / Tacoma (SEA) flight deal in economy from $337

United AirlinesUAUnited Airlines
Round Trip•Economy
United StatesPHL

Philadelphia International Airport

Philadelphia, United States
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
$417 USD
-19%$337 USD
Verified 1 day ago
Good Availability
57% of dates checked are available within 10% of the lowest price

Thursday, November 26th, 2026

2 round-trip options

Returning
Wed, Dec 2, 2026•6 Day Trip
$337 USD
Google Flights
Returning
Thu, Dec 3, 2026•7 Day Trip
$337 USD
Google Flights