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

Friday, December 18th, 2026

6 round-trip options

Returning
Thu, Dec 24, 2026•6 Day Trip
$393 USD
Google Flights
Returning
Sat, Dec 26, 2026•8 Day Trip
$487 USD
Google Flights
Returning
Mon, Dec 28, 2026•10 Day Trip
$467 USD
Google Flights
Returning
Wed, Dec 30, 2026•12 Day Trip
$421 USD
Google Flights
Returning
Thu, Dec 31, 2026•13 Day Trip
$393 USD
Google Flights
Returning
Fri, Jan 1, 2027•14 Day Trip
$393 USD
Google Flights