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ACI to REP: distance & flight time
Alderney (Alderney Airport) → Siem-reap (Siem Reap International Airport)
6,206 mi
9,987 km · 5,393 nm
12h 38m
estimated nonstop flight time
+6h
time difference · heading east
See live ACI→REP fares Phone-only fares on this route — call free
Flight time details
6,206 miles nonstop takes roughly 12h 38m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- ACI — Alderney Airport · Alderney, Guernsey
- REP — Siem Reap International Airport · Siem-reap, Cambodia
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 ACI
- GCI · Guernsey Airport26 mi away
- JER · Jersey Airport34 mi away
- CER · Cherbourg-Maupertus Airport34 mi away
- GFR · Granville Airport64 mi away
Near REP
- BBM · Battambang Airport45 mi away
- KZC · Kampong Chhnang Airport95 mi away
- PXR · Surin Airport103 mi away
- TDX · Trat Airport128 mi away
Frequently asked questions
How far is ACI from REP?
The flight distance from Alderney (ACI) to Siem-reap (REP) is 6,206 miles (9,987 km, 5,393 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ACI to REP?
A nonstop flight takes about 12h 38m 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 ACI to REP?
Nonstop service on ACI–REP 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 12h 38m nonstop estimate.
What is the time difference between Alderney and Siem-reap?
Siem-reap is 6 hours ahead of Alderney.
What is the cheapest way to fly from ACI to REP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ACI–REP that never appear on search engines, with no booking fees.
Why are some ACI to REP fares phone-only?
Consolidator contracts let us sell certain ACI–REP 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.