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GAI to BIR: distance & flight time
Gaithersburg (Montgomery County Airpark) → Biratnagar (Biratnagar Airport)
7,791 mi
12,538 km · 6,770 nm
15h 45m
estimated nonstop flight time
+9.8h
time difference · heading north
See live GAI→BIR fares Phone-only fares on this route — call free
Flight time details
7,791 miles nonstop takes roughly 15h 45m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9.8-hour time gain when reading arrival times on your ticket.
The two airports
- GAI — Montgomery County Airpark · Gaithersburg, United States
- BIR — Biratnagar Airport · Biratnagar, Nepal
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 BIR
- RJB · Rajbiraj Airport33 mi away
- BHP · Bhojpur Airport48 mi away
- BDP · Bhadrapur Airport51 mi away
- TMI · Tumling Tar Airport58 mi away
Frequently asked questions
How far is GAI from BIR?
The flight distance from Gaithersburg (GAI) to Biratnagar (BIR) is 7,791 miles (12,538 km, 6,770 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to BIR?
A nonstop flight takes about 15h 45m 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 Biratnagar?
Biratnagar is 9.8 hours ahead of Gaithersburg.
What is the cheapest way to fly from GAI to BIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–BIR that never appear on search engines, with no booking fees.