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UTH to RML: distance & flight time
Udon Thani (Udon Thani Airport) → Colombo (Colombo Ratmalana Airport)
1,708 mi
2,749 km · 1,484 nm
3h 49m
estimated nonstop flight time
-1.5h
time difference · heading west
See live UTH→RML fares Phone-only fares on this route — call free
Flight time details
1,708 miles nonstop takes roughly 3h 49m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1.5-hour time set-back when reading arrival times on your ticket.
The two airports
- UTH — Udon Thani Airport · Udon Thani, Thailand
- RML — Colombo Ratmalana Airport · Colombo, Sri Lanka
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 UTH
- VTE · Wattay International Airport44 mi away
- KKC · Khon Kaen Airport64 mi away
- LOE · Loei Airport70 mi away
- SNO · Sakon Nakhon Airport89 mi away
Near RML
- CMB · Bandaranaike International Colombo Airport25 mi away
- KCT · Koggala Airport65 mi away
- HRI · Mattala Rajapaksa International Airport93 mi away
- GIU · Sigiriya Air Force Base97 mi away
Frequently asked questions
How far is UTH from RML?
The flight distance from Udon Thani (UTH) to Colombo (RML) is 1,708 miles (2,749 km, 1,484 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from UTH to RML?
A nonstop flight takes about 3h 49m 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 Udon Thani and Colombo?
Colombo is 1.5 hours behind Udon Thani.
What is the cheapest way to fly from UTH to RML?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on UTH–RML that never appear on search engines, with no booking fees.