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 1 day ago
Good Availability
40% of dates checked are available within 10% of the lowest price

Sunday, December 20th, 2026

10 round-trip options

Returning
Fri, Dec 25, 2026•5 Day Trip
$329 USD
Google Flights
Returning
Sat, Dec 26, 2026•6 Day Trip
$737 USD
Google Flights
Returning
Sun, Dec 27, 2026•7 Day Trip
$713 USD
Google Flights
Returning
Mon, Dec 28, 2026•8 Day Trip
$750 USD
Google Flights
Returning
Tue, Dec 29, 2026•9 Day Trip
$739 USD
Google Flights
Returning
Wed, Dec 30, 2026•10 Day Trip
$793 USD
Google Flights
Returning
Thu, Dec 31, 2026•11 Day Trip
$412 USD
Google Flights
Returning
Fri, Jan 1, 2027•12 Day Trip
$472 USD
Google Flights
Returning
Sat, Jan 2, 2027•13 Day Trip
$670 USD
Google Flights
Returning
Sun, Jan 3, 2027•14 Day Trip
$692 USD
Google Flights