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ROI to GAI: distance & flight time
Roi Et (Roi Et Airport) → Gaithersburg (Montgomery County Airpark)
8,616 mi
13,867 km · 7,488 nm
17h 22m
estimated nonstop flight time
-11h
time difference · heading north
See live ROI→GAI fares Phone-only fares on this route — call free
Flight time details
8,616 miles nonstop takes roughly 17h 22m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time set-back when reading arrival times on your ticket.
The two airports
- ROI — Roi Et Airport · Roi Et, Thailand
- 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 ROI
- KKC · Khon Kaen Airport70 mi away
- BFV · Buri Ram Airport70 mi away
- ZVK · Savannakhet Airport72 mi away
- SNO · Sakon Nakhon Airport78 mi away
Near GAI
Frequently asked questions
How far is ROI from GAI?
The flight distance from Roi Et (ROI) to Gaithersburg (GAI) is 8,616 miles (13,867 km, 7,488 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ROI to GAI?
A nonstop flight takes about 17h 22m 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 Roi Et and Gaithersburg?
Gaithersburg is 11 hours behind Roi Et.
What is the cheapest way to fly from ROI to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ROI–GAI that never appear on search engines, with no booking fees.