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SIR to REP: distance & flight time
Sion (Sion Airport) → Siem-reap (Siem Reap International Airport)
5,856 mi
9,424 km · 5,089 nm
11h 57m
estimated nonstop flight time
+5h
time difference · heading east
See live SIR→REP fares Phone-only fares on this route — call free
Flight time details
5,856 miles nonstop takes roughly 11h 57m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time gain when reading arrival times on your ticket.
The two airports
- SIR — Sion Airport · Sion, Switzerland
- 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 SIR
- AOT · Aosta Airport33 mi away
- QLS · Lausanne-Blécherette Airport41 mi away
- ZIN · Interlaken Air Base41 mi away
- MVV · Megève Airport43 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 SIR from REP?
The flight distance from Sion (SIR) to Siem-reap (REP) is 5,856 miles (9,424 km, 5,089 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SIR to REP?
A nonstop flight takes about 11h 57m 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 Sion and Siem-reap?
Siem-reap is 5 hours ahead of Sion.
What is the cheapest way to fly from SIR to REP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SIR–REP that never appear on search engines, with no booking fees.