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IAH to ROI: distance & flight time
Houston (George Bush Intercontinental Houston Airport) → Roi Et (Roi Et Airport)
9,007 mi
14,495 km · 7,827 nm
18h 8m
estimated nonstop flight time
+12h
time difference · heading northwest
See live IAH→ROI fares Phone-only fares on this route — call free
Flight time details
9,007 miles nonstop takes roughly 18h 8m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time gain when reading arrival times on your ticket.
The two airports
- IAH — George Bush Intercontinental Houston Airport · Houston, United States
- ROI — Roi Et Airport · Roi Et, Thailand
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 IAH
- DWH · David Wayne Hooks Memorial Airport14 mi away
- IWS · West Houston Airport23 mi away
- AAP · Andrau Airpark23 mi away
- HOU · William P Hobby Airport24 mi away
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
Frequently asked questions
How far is IAH from ROI?
The flight distance from Houston (IAH) to Roi Et (ROI) is 9,007 miles (14,495 km, 7,827 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAH to ROI?
A nonstop flight takes about 18h 8m 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 Houston and Roi Et?
Roi Et is 12 hours ahead of Houston.
What is the cheapest way to fly from IAH to ROI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAH–ROI that never appear on search engines, with no booking fees.