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HMY to USM: distance & flight time
Seosan (Seosan Air Base) → Ko Samui (Samui Airport)
2,500 mi
4,023 km · 2,172 nm
5h 22m
estimated nonstop flight time
—
time difference · heading southwest
See live HMY→USM fares Phone-only fares on this route — call free
Flight time details
2,500 miles nonstop takes roughly 5h 22m gate to gate, flying southwest. 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
- HMY — Seosan Air Base · Seosan, South Korea
- 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 HMY
- ICN · Incheon International Airport53 mi away
- OSN · Osan Air Base40 mi away
- SWU · Suwon Airport47 mi away
- KUV · Kunsan Air Base56 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 HMY from USM?
The flight distance from Seosan (HMY) to Ko Samui (USM) is 2,500 miles (4,023 km, 2,172 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HMY to USM?
A nonstop flight takes about 5h 22m 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 HMY to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HMY–USM that never appear on search engines, with no booking fees.