Need help booking?
Unpublished phone-only deals available
HEI to USM: distance & flight time
Büsum (Heide-Büsum Airport) → Ko Samui (Samui Airport)
5,731 mi
9,223 km · 4,980 nm
11h 42m
estimated nonstop flight time
+5h
time difference · heading east
See live HEI→USM fares Phone-only fares on this route — call free
Flight time details
5,731 miles nonstop takes roughly 11h 42m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time gain when reading arrival times on your ticket.
The two airports
- HEI — Heide-Büsum Airport · Büsum, Germany
- 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 HEI
- PSH · St. Peter-Ording Airport14 mi away
- FCN · Nordholz Naval Airbase28 mi away
- WBG · Schleswig Air Base33 mi away
- HGL · Helgoland-Düne Airport40 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 HEI from USM?
The flight distance from Büsum (HEI) to Ko Samui (USM) is 5,731 miles (9,223 km, 4,980 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HEI to USM?
A nonstop flight takes about 11h 42m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from HEI to USM?
Nonstop service on HEI–USM depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 11h 42m nonstop estimate.
What is the time difference between Büsum and Ko Samui?
Ko Samui is 5 hours ahead of Büsum.
What is the cheapest way to fly from HEI to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HEI–USM that never appear on search engines, with no booking fees.
Why are some HEI to USM fares phone-only?
Consolidator contracts let us sell certain HEI–USM tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.