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KUM to USM: distance & flight time
Yakushima (Yakushima Airport) → Ko Samui (Samui Airport)
2,439 mi
3,925 km · 2,119 nm
5h 15m
estimated nonstop flight time
-2h
time difference · heading southwest
See live KUM→USM fares Phone-only fares on this route — call free
Flight time details
2,439 miles nonstop takes roughly 5h 15m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- KUM — Yakushima Airport · Yakushima, Japan
- 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 KUM
- TNE · New Tanegashima Airport25 mi away
- KOJ · Kagoshima Airport98 mi away
- KMI · Miyazaki Airport113 mi away
- ASJ · Amami Airport147 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 KUM from USM?
The flight distance from Yakushima (KUM) to Ko Samui (USM) is 2,439 miles (3,925 km, 2,119 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KUM to USM?
A nonstop flight takes about 5h 15m 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 Yakushima and Ko Samui?
Ko Samui is 2 hours behind Yakushima.
What is the cheapest way to fly from KUM to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KUM–USM that never appear on search engines, with no booking fees.