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GAI to BOI: distance & flight time
Gaithersburg (Montgomery County Airpark) → Boise (Boise Air Terminal/Gowen Field)
2,029 mi
3,265 km · 1,763 nm
4h 27m
estimated nonstop flight time
-2h
time difference · heading west
See live GAI→BOI fares Phone-only fares on this route — call free
Flight time details
2,029 miles nonstop takes roughly 4h 27m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- GAI — Montgomery County Airpark · Gaithersburg, United States
- BOI — Boise Air Terminal/Gowen Field · Boise, 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 GAI
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 GAI from BOI?
The flight distance from Gaithersburg (GAI) to Boise (BOI) is 2,029 miles (3,265 km, 1,763 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to BOI?
A nonstop flight takes about 4h 27m 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 Gaithersburg and Boise?
Boise is 2 hours behind Gaithersburg.
What is the cheapest way to fly from GAI to BOI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–BOI that never appear on search engines, with no booking fees.