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

Friday, December 11th, 2026

0 round-trip options

No flight details available for this date.