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

$402 USD

-18%$329 USD

Verified 1 day ago

September 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31$329 1$329 2$329 3$363 4$329 5$357 6$363 7$363 8$329 9$329 10$329 11$329 12$357 13$373 14$329 15$329 16$329 17$329 18$329 19$329 20$373 21$329 22$329 23$329 24$329 25$329 26$329 27$373 28$329 29$329 30$329 1$329 2$329 3$329 4$373

Good Availability

40% of dates checked are available within 10% of the lowest price

Wednesday, September 9th, 2026

9 round-trip options

Returning

Mon, Sep 14, 2026•5 Day Trip

$329 USD

Google Flights

Returning

Tue, Sep 15, 2026•6 Day Trip

$329 USD

Google Flights

Returning

Wed, Sep 16, 2026•7 Day Trip

$329 USD

Google Flights

Returning

Fri, Sep 18, 2026•9 Day Trip

$329 USD

Google Flights

Returning

Sat, Sep 19, 2026•10 Day Trip

$329 USD

Google Flights

Returning

Sun, Sep 20, 2026•11 Day Trip

$373 USD

Google Flights

Returning

Mon, Sep 21, 2026•12 Day Trip

$329 USD

Google Flights

Returning

Tue, Sep 22, 2026•13 Day Trip

$329 USD

Google Flights

Returning

Wed, Sep 23, 2026•14 Day Trip

$329 USD

Google Flights

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

Seattle–Tacoma International Airport

Philadelphia International Airport

September 2026

Wednesday, September 9th, 2026