SEA to PHL from $329 in economy

AAAmerican Airlines

Round Trip•Economy

SEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

PHL

Philadelphia International Airport

Philadelphia, United States

$396 USD

-17%$329 USD

Verified 16 days ago

December 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30$413 1$329 2$329 3$329 4$329 5$329 6$329 7$329 8$329 9$329 10$329 11$373 12$329 13$329 14$373 15$329 16$329 17$474 18$629 19$445 20$514 21$531 22$479 23$509 24$329 25$329 26$423 27$423 28$403 29$329 30$357 31$329 1$329 2$413 3$413

Good Availability

48% of dates checked are available within 10% of the lowest price

Tuesday, December 15th, 2026

6 round-trip options

Returning

Mon, Dec 21, 2026•6 Day Trip

$373 USD

Google Flights

Returning

Tue, Dec 22, 2026•7 Day Trip

$329 USD

Google Flights

Returning

Thu, Dec 24, 2026•9 Day Trip

$373 USD

Google Flights

Returning

Fri, Dec 25, 2026•10 Day Trip

$329 USD

Google Flights

Returning

Sun, Dec 27, 2026•12 Day Trip

$723 USD

Google Flights

Returning

Mon, Dec 28, 2026•13 Day Trip

$760 USD

Google Flights

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

Seattle–Tacoma International Airport

Philadelphia International Airport

December 2026

Tuesday, December 15th, 2026