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ZBY to GAI: distance & flight time
Sainyabuli (Sayaboury Airport) → Gaithersburg (Montgomery County Airpark)
8,400 mi
13,519 km · 7,300 nm
16h 56m
estimated nonstop flight time
—
time difference · heading north
See live ZBY→GAI fares Phone-only fares on this route — call free
Flight time details
8,400 miles nonstop takes roughly 16h 56m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- ZBY — Sayaboury Airport · Sainyabuli, Laos
- 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 ZBY
- LPQ · Luang Phabang International Airport54 mi away
- NNT · Nan Airport68 mi away
- XKH · Xieng Khouang Airport96 mi away
- ODY · Oudomsay Airport101 mi away
Near GAI
Frequently asked questions
How far is ZBY from GAI?
The flight distance from Sainyabuli (ZBY) to Gaithersburg (GAI) is 8,400 miles (13,519 km, 7,300 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ZBY to GAI?
A nonstop flight takes about 16h 56m 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 cheapest way to fly from ZBY to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ZBY–GAI that never appear on search engines, with no booking fees.