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UTH to USM: distance & flight time
Udon Thani (Udon Thani Airport) → Ko Samui (Samui Airport)
572 mi
920 km · 497 nm
1h 43m
estimated nonstop flight time
Same time
time difference · heading south
See live UTH→USM fares Phone-only fares on this route — call free
Flight time details
572 miles nonstop takes roughly 1h 43m gate to gate, flying south. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- UTH — Udon Thani Airport · Udon Thani, Thailand
- USM — Samui Airport · Ko Samui, 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 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 USM
- URT · Surat Thani Airport69 mi away
- NST · Nakhon Si Thammarat Airport70 mi away
- CJM · Chumphon Airport93 mi away
- UNN · Ranong Airport102 mi away
Frequently asked questions
How far is UTH from USM?
The flight distance from Udon Thani (UTH) to Ko Samui (USM) is 572 miles (920 km, 497 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from UTH to USM?
A nonstop flight takes about 1h 43m 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 cheapest way to fly from UTH to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on UTH–USM that never appear on search engines, with no booking fees.