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BFI to IAD: distance & flight time
Seattle (Boeing Field King County International Airport) → Washington (Washington Dulles International Airport)
2,300 mi
3,701 km · 1,998 nm
4h 59m
estimated nonstop flight time
+3h
time difference · heading east
See live BFI→IAD fares Phone-only fares on this route — call free
Flight time details
2,300 miles nonstop takes roughly 4h 59m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- BFI — Boeing Field King County International Airport · Seattle, United States
- IAD — Washington Dulles International Airport · Washington, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near BFI
- SEA · Seattle Tacoma International Airport6 mi away
- RNT · Renton Municipal Airport5 mi away
- PWT · Bremerton National Airport22 mi away
- TIW · Tacoma Narrows Airport22 mi away
Frequently asked questions
How far is BFI from IAD?
The flight distance from Seattle (BFI) to Washington (IAD) is 2,300 miles (3,701 km, 1,998 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BFI to IAD?
A nonstop flight takes about 4h 59m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Seattle and Washington?
Washington is 3 hours ahead of Seattle.
What is the cheapest way to fly from BFI to IAD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BFI–IAD that never appear on search engines, with no booking fees.