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USM to ACI: distance & flight time
Ko Samui (Samui Airport) → Alderney (Alderney Airport)
6,254 mi
10,065 km · 5,435 nm
12h 44m
estimated nonstop flight time
-6h
time difference · heading northwest
See live USM→ACI fares Phone-only fares on this route — call free
Flight time details
6,254 miles nonstop takes roughly 12h 44m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- USM — Samui Airport · Ko Samui, Thailand
- ACI — Alderney Airport · Alderney, Guernsey
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 ACI
- GCI · Guernsey Airport26 mi away
- JER · Jersey Airport34 mi away
- CER · Cherbourg-Maupertus Airport34 mi away
- GFR · Granville Airport64 mi away
Frequently asked questions
How far is USM from ACI?
The flight distance from Ko Samui (USM) to Alderney (ACI) is 6,254 miles (10,065 km, 5,435 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USM to ACI?
A nonstop flight takes about 12h 44m 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 Alderney?
Alderney is 6 hours behind Ko Samui.
What is the cheapest way to fly from USM to ACI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USM–ACI that never appear on search engines, with no booking fees.