Nonstop flights from Seattle to Philadelphia

3 airlines fly this route, with up to 6 flights a day.

SEASeattle-Tacoma International

2,372 mi · 40 flights a week

PHLPhiladelphia International

SEAPHL

When they leave

Seattle time

8:10a10:02pFirst departure 8:10 AM, last 10:02 PM

Two in the morning, 8:10 AM to 8:28 AM, then one afternoon flight at 12:50 PM, then three in the evening, 9:30 PM to 10:02 PM.

Every flight

Earliest first

8:10 AM→4:32 PMAmerican AirlinesAirbus A321Daily
8:28 AM→4:43 PMAlaska AirlinesBoeing 737 MAX 9Daily
12:50 PM→9:09 PMAmerican AirlinesAirbus A321Mon, Thu, Fri, Sat, Sun
9:30 PM→5:50 AM⁺¹Delta Air LinesUntil Nov 29, back May 6, 2027Airbus A321neoDaily
9:58 PM→6:16 AM⁺¹American AirlinesAirbus A321Daily
10:02 PM→6:13 AM⁺¹Alaska AirlinesBoeing 737Daily

Schedules last checked Sep 23, 2026. Times are local.

Flying from Seattle to Philadelphia

American Airlines flies most often, 2 to 3 times a day on the Airbus A321. Alaska Airlines flies twice a day on the Boeing 737 and Boeing 737 MAX 9. Delta Air Lines flies daily on the Airbus A321neo.

There are 5 or 6 flights every day of the week. The first arrival in Philadelphia is at 4:32 PM and the last at 6:16 AM the next day. The flight covers 2,372 miles.

Delta Air Lines flies it until Nov 29 and is back on May 6, 2027.

Flying back, Philadelphia to Seattle has 40 nonstop flights a week.

Return flights

Philadelphia to SeattleView

Find the cheapest day to fly from Seattle to Philadelphia.

Schedules as of Oct 9, 2026.