AS371Seattle to Philadelphia
Alaska Airlines flight AS371 flies from Seattle Tacoma (SEA) to Philadelphia (PHL), 3,818 km. Over October 2025 to July 2026 it usually arrives right on schedule: 82% of 282 flights arrived within 15 minutes of schedule and 0.4% were cancelled (US Department of Transportation data).
On-time record, last 12 months
Every operation of AS371, October 2025 to July 2026: 282 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as AS371
- Seattle Tacoma (SEA) to Philadelphia (PHL)154 flights
- Spokane (GEG) to Seattle Tacoma (SEA)51 flights
- Portland (PDX) to Seattle Tacoma (SEA)36 flights
- Sacramento (SMF) to Portland (PDX)29 flights
- Portland (PDX) to Los Angeles (LAX)12 flights
Other flights from Seattle to Philadelphia
More about Seattle Tacoma (SEA) and Philadelphia (PHL).
Embed this on your site
A live badge for travel blogs, forums and trip reports. It updates as new data comes in, and links back here for the full stats.
<a href="https://tripstow.com/flights/as371" title="AS371 is on time 82% of the time on TripStow"><img src="https://tripstow.com/badge/flights/as371.svg" alt="AS371 is on time 82% of the time" width="360" height="88" loading="lazy"></a>
<a href="https://tripstow.com/flights/as371" title="AS371 is on time 82% of the time on TripStow"><img src="https://tripstow.com/badge/flights/as371.svg?theme=light" alt="AS371 is on time 82% of the time" width="360" height="88" loading="lazy"></a>[](https://tripstow.com/flights/as371)Flying soon?
Forward your booking to TripStow and get your trip built for you, with check-in reminders, punctuality for every flight and a map of everywhere you have been.
Start free