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Route

Seattle → Philadelphia

BFISeattleKing County International Airport - Boeing Field
PHLPhiladelphiaPhiladelphia International Airport
Distance
2,371 mi
Estimated flight time
~5h 15m

Philadelphia is currently 3 hours ahead of Seattle.

Observed nonstop

View the reverse route

How often does this route fly?

Frequency

Daily at most

On average around 1 flights a day, observed from October 2025 to September 2026.

1
flights per day
2
busiest month · Apr
1
quietest month · Nov
4 hr 21 min
measured flight time
5 / 12
months seen

Through the year

Per day, month by month

  1. –Jan2026
  2. –Feb
  3. 1Mar
  4. 2Apr
  5. 1May
  6. –Jun
  7. –Jul
  8. –Aug
  9. 1Sep
  10. –Oct2025
  11. 1Nov
  12. –Dec

In December 2025 we saw less traffic at Seattle in general than usual; compare that month with care.

Airlines

Who flies it

Red Barn Operationsnow and then

Through the day

Departure times

Local time in Seattle. Most departures between 08:00 and 11:00.

  1. 00:00
  2. 01:00
  3. 02:00
  4. 03:00
  5. 04:00
  6. 05:00
  7. 06:00
  8. 07:00
  9. 08:00
  10. 09:00
  11. 10:00
  12. 11:00
  13. 12:00
  14. 13:00
  15. 14:00
  16. 15:00
  17. 16:00
  18. 17:00
  19. 18:00
  20. 19:00
  21. 20:00
  22. 21:00
  23. 22:00
  24. 23:00

Through the week

By weekday

  1. 0Mon
  2. 0Tue
  3. 0.1Wed
  4. 0.1Thu
  5. 0Fri
  6. 0Sat
  7. 0Sun

Fleet

Aircraft observed

  1. Bombardier Challenger 300CL3018%
  2. Bombardier Challenger 350CL3518%
  3. Bombardier Challenger 600CL6018%
All the numbers in a table
MonthPer daySeenAirlines
January 2026Not seen in this month.
February 2026Not seen in this month.
March 202612
  • Red Barn Operations1×
April 202622
  • Red Barn Operations1×
May 202612–
    June 2026Not seen in this month.
    July 2026Not seen in this month.
    August 2026Not seen in this month.
    September 202613–
      October 2025Not seen in this month.
      November 202512
      • Red Barn Operations1×
      December 2025Not seen in this month.

      Airlines observed on this route

      From observed callsign routes on BFI-PHL - not a booking guarantee.

      Red Barn Operations

      RDN

      Hub: BFI Seattle

      16 departure airportsView airline →

      About this route

      • Domestic route: both airports are in the same country.
      • The 5th longest observed direct route from BFI, out of 63.
      • Direct destinations observed from Seattle: 63.
      • Direct destinations observed from Philadelphia: 139.

      The airports on this route

      King County International Airport - Boeing Field

      Seattle, United StatesBFI / KBFI

      Regional airport · 63 direct destinations · 2 runways · longest runway 10,007 ft

      69 °F · Partly cloudySource: METAR observation via the NOAA Aviation Weather Center

      Airport pageAll direct destinations

      Philadelphia International Airport

      Philadelphia, United StatesPHL / KPHL

      Major airport · 139 direct destinations · 4 runways · longest runway 12,001 ft

      66 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center

      Airport pageAll direct destinations

      Alternative airports for this journey

      Same journey, a different airport nearby - with an observed direct connection.

      SEA PHLSeattle–Tacoma International AirportSeattle is about 6 mi from Seattle.View route →

      About the route from Seattle to Philadelphia

      The observed direct connection between King County International Airport - Boeing Field (BFI) and Philadelphia International Airport (PHL) covers approximately 2,371 mi. The estimated flight time is around 5h 15m. Red Barn Operations has been observed on this connection in the available route data.

      Frequently asked questions about this route

      How far is Seattle from Philadelphia by air?
      The great-circle distance between King County International Airport - Boeing Field and Philadelphia International Airport is approximately 2,371 mi.
      How long is the flight from Seattle to Philadelphia?
      Based on the distance, the estimated flight time is about 5h 15m. This is an estimate, not a schedule.
      Is there a direct connection from Seattle to Philadelphia?
      Yes, a direct connection between BFI and PHL has been observed in our route data.
      Which airlines have been observed on this route?
      In the available route data: Red Barn Operations.
      How often is there a flight from Seattle to Philadelphia?
      On average around 1 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 11 observed flights. Mainly Red Barn Operations. That is an observation, not a timetable.
      What is the current time difference between Seattle and Philadelphia?
      Philadelphia is currently 3 hours ahead of Seattle.

      Where this data comes from

      The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.

      The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.

      Route data updated on October 11, 2026.