PHL to SEA from $329 in economy

AAAmerican Airlines

Round Trip•Economy

PHL

Philadelphia International Airport

Philadelphia, United States

SEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

$396 USD

-17%$329 USD

Verified 13 days ago

December 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30$562 1$378 2$329 3$329 4$329 5$329 6$329 7$329 8$329 9$329 10$329 11$329 12$329 13$329 14$329 15$329 16$329 17$373 18$393 19$435 20$450 21$373 22$329 23$534 24$373 25$329 26$722 27$723 28$760 29$641 30$734 31$420 1$450 2$680 3$702

Good Availability

46% of dates checked are available within 10% of the lowest price

Monday, December 21st, 2026

6 round-trip options

Returning

Sun, Dec 27, 2026•6 Day Trip

$467 USD

Google Flights

Returning

Tue, Dec 29, 2026•8 Day Trip

$373 USD

Google Flights

Returning

Thu, Dec 31, 2026•10 Day Trip

$373 USD

Google Flights

Returning

Sat, Jan 2, 2027•12 Day Trip

$457 USD

Google Flights

Returning

Sun, Jan 3, 2027•13 Day Trip

$457 USD

Google Flights

Returning

Mon, Jan 4, 2027•14 Day Trip

$417 USD

Google Flights

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

Philadelphia International Airport

Seattle–Tacoma International Airport

December 2026

Monday, December 21st, 2026