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USM to GAS: distance & flight time
Ko Samui (Samui Airport) → Garissa (Garissa Airport)
4,211 mi
6,778 km · 3,660 nm
8h 43m
estimated nonstop flight time
-4h
time difference · heading west
See live USM→GAS fares Phone-only fares on this route — call free
Flight time details
4,211 miles nonstop takes roughly 8h 43m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 4-hour time set-back when reading arrival times on your ticket.
The two airports
- USM — Samui Airport · Ko Samui, Thailand
- GAS — Garissa Airport · Garissa, Kenya
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 USM
- URT · Surat Thani Airport69 mi away
- NST · Nakhon Si Thammarat Airport70 mi away
- CJM · Chumphon Airport93 mi away
- UNN · Ranong Airport102 mi away
Near GAS
- HOA · Hola Airport77 mi away
- JJM · Mulika Lodge Airport109 mi away
Frequently asked questions
How far is USM from GAS?
The flight distance from Ko Samui (USM) to Garissa (GAS) is 4,211 miles (6,778 km, 3,660 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USM to GAS?
A nonstop flight takes about 8h 43m 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 Ko Samui and Garissa?
Garissa is 4 hours behind Ko Samui.
What is the cheapest way to fly from USM to GAS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USM–GAS that never appear on search engines, with no booking fees.