PHL → SEAPhiladelphia to Seattle

live

Direct flights from Philadelphia (PHL) to Seattle (SEA): 21 nonstop departures observed each week across 3 airlines. 91% of the last 11 operated flights arrived within 15 minutes of schedule. The median arrival is 4 minutes early. No cancellations were recorded across the 11 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 25 October 2026 at 04:22 UTC.

PHL Philadelphia smooth · +0
SEA Seattle disrupted · +66
3,818 km · ~5h 24m est.
dep bank 11:00–23:3521x weekly
Runs reliable · 3 airlines · 21x weekly · nonstop
91% on time

of the last 11 operated PHL → SEA flights arrived within 15 minutes

Median arrival delay is −4 min. 0 of 11 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−4 minacross the last 11 operated legs
Flight time~5h 24mestimated from route distance
Weekly departures21x3 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 11

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 AS370 11:02 daily · AS443 22:41 daily

American AirlinesAA100% on time

Flights AA2870 varies daily · AA1398 22:00 Mo Th Fr Su · AA1823 23:35 daily

Delta Air LinesDL

Flights DL2092 11:00 daily

History

operated legs · board outcomes
10-24AA1823dep −7 → arr−22
10-24AA2870dep −1 → arr−20
10-24AS370departed+28
10-24AS443dep +5 → arr−4
10-24DL2092departed+11
10-23AA1398dep −7 → arr+1
10-23AA1823departed−5
10-23AA2870departed−5
10-23AS370departed−4
10-23AS443departed−9
10-23DL2092departed+1

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 🌤 clear · N 0 kt Full PHL delay board →
SEASeattle +66 min disrupted 🌤 mostly cloudy · N 0 kt Full SEA delay board →

Weather lens

Current conditions put the pressure at PHL: 39% odds of a 15+ minute delay and around +10 min expected when it bites, 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?

Some delays possible. The arrival side at SEA is the weaker end, route health score 56/100. 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 11:00 and evening departures around 22:00 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 39 flights a week between them. Compare carrier days and times in the airline list above.