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BTM to GAI: distance & flight time
Butte (Bert Mooney Airport) → Gaithersburg (Montgomery County Airpark)
1,842 mi
2,964 km · 1,600 nm
4h 5m
estimated nonstop flight time
+2h
time difference · heading east
See live BTM→GAI fares Phone-only fares on this route — call free
Flight time details
1,842 miles nonstop takes roughly 4h 5m 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
- BTM — Bert Mooney Airport · Butte, United States
- GAI — Montgomery County Airpark · Gaithersburg, 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 BTM
- HLN · Helena Regional Airport51 mi away
- BZN · Gallatin Field66 mi away
- SMN · Lemhi County Airport88 mi away
- LVM · Mission Field100 mi away
Near GAI
Frequently asked questions
How far is BTM from GAI?
The flight distance from Butte (BTM) to Gaithersburg (GAI) is 1,842 miles (2,964 km, 1,600 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BTM to GAI?
A nonstop flight takes about 4h 5m 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 Butte and Gaithersburg?
Gaithersburg is 2 hours ahead of Butte.
What is the cheapest way to fly from BTM to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BTM–GAI that never appear on search engines, with no booking fees.