How is the flight distance measured?

Flight distances are measured as the great-circle (straight-line) distance between airports. Actual flight paths may be slightly longer due to air traffic routing and weather avoidance.

How long does the flight from Seattle to Boston take?

Flight time depends on the exact route and aircraft, but at roughly 4,005 km the typical non-stop flight takes 1–10 hours. Check the flight duration page for the exact average.

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Flight Distance: Seattle to Boston

4,005

Kilometres (km)

2,489

Miles (mi)

2,163

Nautical miles

About this flight distance

The great circle distance from Seattle to Boston is approximately 4,005 km. The typical flight time is 5h 12m.

This is the shortest possible distance between the two cities as the crow flies. Real flight paths are often slightly longer due to air traffic control routing, weather, and airspace restrictions.

Related route pages

→Direct flights Seattle to Boston →Flight duration Seattle to Boston →Cheapest day to fly Seattle to Boston →Flights Seattle to Boston

Nearby airports

Near Seattle

Boeing Field King County International Airport (BFI)9 km
Tacoma Narrows Airport (TIW)29 km
Snohomish County (Paine Field) Airport (PAE)51 km

Near Boston

Laurence G Hanscom Field (BED)26 km
Manchester Boston Regional Airport (MHT)72 km
Worcester Regional Airport (ORH)72 km

Frequently Asked Questions

The great-circle distance from Seattle to Boston is approximately 4,005 km (2,489 miles).