Seattle / Tacoma (SEA) to Philadelphia (PHL) flight deal in economy from $265

United AirlinesUAUnited Airlines
Round Trip•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
United StatesPHL

Philadelphia International Airport

Philadelphia, United States
$411 USD
-36%$265 USD
Verified about 15 hours ago
Extremely Rare Availability
4% of dates checked are available within 10% of the lowest price

Saturday, December 19th, 2026

10 round-trip options

Returning
Thu, Dec 24, 2026•5 Day Trip
$562 USD
Google Flights
Returning
Fri, Dec 25, 2026•6 Day Trip
$646 USD
Google Flights
Returning
Sat, Dec 26, 2026•7 Day Trip
$896 USD
Google Flights
Returning
Sun, Dec 27, 2026•8 Day Trip
$1,010 USD
Google Flights
Returning
Mon, Dec 28, 2026•9 Day Trip
$619 USD
Google Flights
Returning
Tue, Dec 29, 2026•10 Day Trip
$738 USD
Google Flights
Returning
Wed, Dec 30, 2026•11 Day Trip
$646 USD
Google Flights
Returning
Thu, Dec 31, 2026•12 Day Trip
$608 USD
Google Flights
Returning
Fri, Jan 1, 2027•13 Day Trip
$605 USD
Google Flights
Returning
Sat, Jan 2, 2027•14 Day Trip
$722 USD
Google Flights