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

Delta Air LinesDLDelta Air Lines
Round Trip•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
United StatesPHL

Philadelphia International Airport

Philadelphia, United States
$390 USD
-16%$329 USD
Verified 1 day ago
Great Availability
65% of dates checked are available within 10% of the lowest price

Thursday, December 24th, 2026

10 round-trip options

Returning
Tue, Dec 29, 2026•5 Day Trip
$689 USD
Google Flights
Returning
Wed, Dec 30, 2026•6 Day Trip
$689 USD
Google Flights
Returning
Thu, Dec 31, 2026•7 Day Trip
$553 USD
Google Flights
Returning
Fri, Jan 1, 2027•8 Day Trip
$349 USD
Google Flights
Returning
Sat, Jan 2, 2027•9 Day Trip
$553 USD
Google Flights
Returning
Sun, Jan 3, 2027•10 Day Trip
$553 USD
Google Flights
Returning
Mon, Jan 4, 2027•11 Day Trip
$349 USD
Google Flights
Returning
Tue, Jan 5, 2027•12 Day Trip
$349 USD
Google Flights
Returning
Wed, Jan 6, 2027•13 Day Trip
$349 USD
Google Flights
Returning
Thu, Jan 7, 2027•14 Day Trip
$349 USD
Google Flights