PHL → SEAPhiladelphia to Seattle

live

Direct flights from Philadelphia (PHL) to Seattle (SEA): 21 nonstop departures observed each week across 3 airlines. 88% of the last 8 operated flights arrived within 15 minutes of schedule. The median arrival is 8 minutes early. No cancellations were recorded across the 8 tracked flights. The nonstop covers 3,818 km, an estimated 5 hours 24 minutes in the air. Measured by Pro Flight Search from live flight boards at Philadelphia and Seattle. Updated 10 September 2026 at 22:23 UTC.

PHL Philadelphia smooth · +0
SEA Seattle smooth · +2
3,818 km · ~5h 24m est.
dep bank 11:02–23:3521x weekly
Runs reliable · 3 airlines · 21x weekly · nonstop
88% on time

of the last 8 operated PHL → SEA flights arrived within 15 minutes

Median arrival delay is −8 min. 0 of 8 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−8 minacross the last 8 operated legs
Flight time~5h 24mestimated from route distance
Weekly departures21x3 direct airlines on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Alaska AirlinesAmerican AirlinesDelta Air Lines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Alaska AirlinesAS

Flights AS1898 11:02 daily · AS443 22:59 daily

American AirlinesAA

Flights AA2870 12:44 daily · AA1037 21:45 Mo Th Fr Sa Su · AA1823 23:35 daily

Delta Air LinesDL

Flights DL2092 11:05 daily

History

operated legs · board outcomes
09-10AA2870dep −6 → arr−28
09-10AS1898departed+25
09-10DL2092departed−8
09-09AA1823dep +7 → arr−6
09-09AA2870dep −5 → arr−16
09-09AS1898departed−8
09-09AS443departed−21
09-09DL2092departed−12

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
PHLPhiladelphia +0 min smooth Full PHL delay board →
SEASeattle +2 min smooth Full SEA delay board →

Weather lens

Current conditions put the pressure at PHL: 40% odds of a 15+ minute delay, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Philadelphia to Seattle route actually runs

Pro Flight Search records official board updates for nonstop PHL to SEA flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Philadelphia (PHL) to Seattle (SEA) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/PHL-SEA
How we measure this →

PHL to SEA questions

Is PHL–SEA running on time right now?

Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on PHL–SEA?

Operators schedule morning departures around 11:02 and evening departures around 21:45 from PHL. Earlier flights typically land before destination-airport delays accumulate later in the day; check the SEA delay card to confirm conditions when you'd arrive.

How long is the flight from PHL to SEA?

Great-circle distance is 3,818 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 300–357 min gate-to-gate on this route.

How often does PHL–SEA fly?

3 carriers operate this route, around 40 flights a week between them. Compare carrier days and times in the airline list above.