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IMK to USM: distance & flight time
Simikot (Simikot Airport) → Ko Samui (Samui Airport)
1,837 mi
2,957 km · 1,597 nm
4h 4m
estimated nonstop flight time
+1.3h
time difference · heading southeast
See live IMK→USM fares Phone-only fares on this route — call free
Flight time details
1,837 miles nonstop takes roughly 4h 4m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1.3-hour time gain when reading arrival times on your ticket.
The two airports
- IMK — Simikot Airport · Simikot, Nepal
- 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 IMK
- BJU · Bajura Airport34 mi away
- BJH · Bajhang Airport48 mi away
- JUM · Jumla Airport53 mi away
- DOP · Dolpa Airport91 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 IMK from USM?
The flight distance from Simikot (IMK) to Ko Samui (USM) is 1,837 miles (2,957 km, 1,597 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IMK to USM?
A nonstop flight takes about 4h 4m 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 Simikot and Ko Samui?
Ko Samui is 1.3 hours ahead of Simikot.
What is the cheapest way to fly from IMK to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IMK–USM that never appear on search engines, with no booking fees.