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CMI to ROI: distance & flight time
Champaign (University of Illinois Willard Airport) → Roi Et (Roi Et Airport)
8,480 mi
13,647 km · 7,369 nm
17h 6m
estimated nonstop flight time
+12h
time difference · heading north
See live CMI→ROI fares Phone-only fares on this route — call free
Flight time details
8,480 miles nonstop takes roughly 17h 6m gate to gate, flying north. 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
- CMI — University of Illinois Willard Airport · Champaign, 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 CMI
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 CMI from ROI?
The flight distance from Champaign (CMI) to Roi Et (ROI) is 8,480 miles (13,647 km, 7,369 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CMI to ROI?
A nonstop flight takes about 17h 6m 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 Champaign and Roi Et?
Roi Et is 12 hours ahead of Champaign.
What is the cheapest way to fly from CMI to ROI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CMI–ROI that never appear on search engines, with no booking fees.