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ROI to UBJ: distance & flight time
Roi Et (Roi Et Airport) → Yamaguchi (Yamaguchi Ube Airport)
2,105 mi
3,387 km · 1,829 nm
4h 36m
estimated nonstop flight time
+2h
time difference · heading northeast
See live ROI→UBJ fares Phone-only fares on this route — call free
Flight time details
2,105 miles nonstop takes roughly 4h 36m gate to gate, flying northeast. 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
- ROI — Roi Et Airport · Roi Et, Thailand
- UBJ — Yamaguchi Ube Airport · Yamaguchi, Japan
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 UBJ
- KKJ · Kitakyūshū Airport15 mi away
- OIT · Oita Airport41 mi away
- FUK · Fukuoka Airport53 mi away
- IWK · Iwakuni Marine Corps Air Station57 mi away
Frequently asked questions
How far is ROI from UBJ?
The flight distance from Roi Et (ROI) to Yamaguchi (UBJ) is 2,105 miles (3,387 km, 1,829 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ROI to UBJ?
A nonstop flight takes about 4h 36m 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 Yamaguchi?
Yamaguchi is 2 hours ahead of Roi Et.
What is the cheapest way to fly from ROI to UBJ?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ROI–UBJ that never appear on search engines, with no booking fees.