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BOI to IAD: distance & flight time
Boise (Boise Air Terminal/Gowen Field) → Washington (Washington Dulles International Airport)
2,020 mi
3,251 km · 1,755 nm
4h 26m
estimated nonstop flight time
+2h
time difference · heading east
See live BOI→IAD fares Phone-only fares on this route — call free
Flight time details
2,020 miles nonstop takes roughly 4h 26m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- BOI — Boise Air Terminal/Gowen Field · Boise, 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 BOI
- MUO · Mountain Home Air Force Base40 mi away
- ONO · Ontario Municipal Airport50 mi away
- MYL · McCall Municipal Airport92 mi away
- SUN · Friedman Memorial Airport97 mi away
Frequently asked questions
How far is BOI from IAD?
The flight distance from Boise (BOI) to Washington (IAD) is 2,020 miles (3,251 km, 1,755 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BOI to IAD?
A nonstop flight takes about 4h 26m 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 Boise and Washington?
Washington is 2 hours ahead of Boise.
What is the cheapest way to fly from BOI to IAD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BOI–IAD that never appear on search engines, with no booking fees.