Seattle / Tacoma (SEA) to Philadelphia (PHL) flight deal in economy from $329

American AirlinesAAAmerican Airlines
Round Trip•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
United StatesPHL

Philadelphia International Airport

Philadelphia, United States
$402 USD
-18%$329 USD
Verified about 22 hours ago
Good Availability
40% of dates checked are available within 10% of the lowest price

Wednesday, October 21st, 2026

9 round-trip options

Returning
Mon, Oct 26, 2026•5 Day Trip
$329 USD
Google Flights
Returning
Tue, Oct 27, 2026•6 Day Trip
$329 USD
Google Flights
Returning
Wed, Oct 28, 2026•7 Day Trip
$329 USD
Google Flights
Returning
Fri, Oct 30, 2026•9 Day Trip
$329 USD
Google Flights
Returning
Sat, Oct 31, 2026•10 Day Trip
$329 USD
Google Flights
Returning
Sun, Nov 1, 2026•11 Day Trip
$393 USD
Google Flights
Returning
Mon, Nov 2, 2026•12 Day Trip
$329 USD
Google Flights
Returning
Tue, Nov 3, 2026•13 Day Trip
$329 USD
Google Flights
Returning
Wed, Nov 4, 2026•14 Day Trip
$357 USD
Google Flights