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, December 31st, 2026

6 round-trip options

Returning
Wed, Jan 6, 2027•6 Day Trip
$420 USD
Google Flights
Returning
Fri, Jan 8, 2027•8 Day Trip
$420 USD
Google Flights
Returning
Sun, Jan 10, 2027•10 Day Trip
$420 USD
Google Flights
Returning
Tue, Jan 12, 2027•12 Day Trip
$420 USD
Google Flights
Returning
Wed, Jan 13, 2027•13 Day Trip
$420 USD
Google Flights
Returning
Thu, Jan 14, 2027•14 Day Trip
$420 USD
Google Flights