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Route

Philadelphia → Seattle

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

Seattle is currently 3 hours behind Philadelphia.

No nonstop connection observed

View the reverse route

Our route data contains no observed nonstop flight from Philadelphia to Seattle. That does not rule out a one-stop journey; see the direct destinations of Philadelphia for the options.

About this route

  • Domestic route: both airports are in the same country.
  • Direct destinations observed from Philadelphia: 139.
  • Direct destinations observed from Seattle: 63.

The airports on this route

Philadelphia International Airport

Philadelphia, United StatesPHL / KPHL

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

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

Airport pageAll direct destinations

King County International Airport - Boeing Field

Seattle, United StatesBFI / KBFI

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

66 °F · ClearSource: 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.

PHL SEASeattle–Tacoma International AirportSeattle is about 6 mi from Seattle.View route →EWR BFINewark Liberty International AirportNewark is about 80 mi from Philadelphia.View route →TEB BFITeterboro AirportTeterboro is about 92 mi from Philadelphia.View route →

About the route from Philadelphia to Seattle

The distance between Philadelphia International Airport (PHL) and King County International Airport - Boeing Field (BFI) is approximately 2,371 mi; no direct connection has been observed in our route data.

Frequently asked questions about this route

How far is Philadelphia from Seattle by air?
The great-circle distance between Philadelphia International Airport and King County International Airport - Boeing Field is approximately 2,371 mi.
Is there a direct connection from Philadelphia to Seattle?
No direct connection between PHL and BFI has been observed in our route data. That does not rule out a one-stop journey.
What is the current time difference between Philadelphia and Seattle?
Seattle is currently 3 hours behind Philadelphia.

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 flight archive of the last twelve months has nothing for this route, so we say nothing about frequency.

Route data updated on October 11, 2026.