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KGS to USM: distance & flight time
Kos (Kos Airport) → Ko Samui (Samui Airport)
4,884 mi
7,861 km · 4,244 nm
10h 3m
estimated nonstop flight time
+4h
time difference · heading east
See live KGS→USM fares Phone-only fares on this route — call free
Flight time details
4,884 miles nonstop takes roughly 10h 3m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 4-hour time gain when reading arrival times on your ticket.
The two airports
- KGS — Kos Airport · Kos, Greece
- 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 KGS
- JKL · Kalymnos Airport14 mi away
- LRS · Leros Airport31 mi away
- BXN · Imsık Airport40 mi away
- JTY · Astypalaia Airport42 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 KGS from USM?
The flight distance from Kos (KGS) to Ko Samui (USM) is 4,884 miles (7,861 km, 4,244 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KGS to USM?
A nonstop flight takes about 10h 3m 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 Kos and Ko Samui?
Ko Samui is 4 hours ahead of Kos.
What is the cheapest way to fly from KGS to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KGS–USM that never appear on search engines, with no booking fees.