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KEY to USM: distance & flight time
Kericho (Kericho Airport) → Ko Samui (Samui Airport)
4,509 mi
7,257 km · 3,919 nm
9h 19m
estimated nonstop flight time
+4h
time difference · heading east
See live KEY→USM fares Phone-only fares on this route — call free
Flight time details
4,509 miles nonstop takes roughly 9h 19m 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
- KEY — Kericho Airport · Kericho, Kenya
- 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 KEY
- KIS · Kisumu Airport41 mi away
- EDL · Eldoret International Airport55 mi away
- GGM · Kakamega Airport55 mi away
- MRE · Mara Serena Lodge Airstrip72 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 KEY from USM?
The flight distance from Kericho (KEY) to Ko Samui (USM) is 4,509 miles (7,257 km, 3,919 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KEY to USM?
A nonstop flight takes about 9h 19m 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 Kericho and Ko Samui?
Ko Samui is 4 hours ahead of Kericho.
What is the cheapest way to fly from KEY to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KEY–USM that never appear on search engines, with no booking fees.