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ONO to REP: distance & flight time
Ontario (Ontario Municipal Airport) → Siem-reap (Siem Reap International Airport)
7,711 mi
12,409 km · 6,701 nm
15h 35m
estimated nonstop flight time
+13h
time difference · heading northwest
See live ONO→REP fares Phone-only fares on this route — call free
Flight time details
7,711 miles nonstop takes roughly 15h 35m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time gain when reading arrival times on your ticket.
The two airports
- ONO — Ontario Municipal Airport · Ontario, United States
- 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 ONO
- BOI · Boise Air Terminal/Gowen Field50 mi away
- BKE · Baker City Municipal Airport69 mi away
- MYL · McCall Municipal Airport75 mi away
- MUO · Mountain Home Air Force Base88 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 ONO from REP?
The flight distance from Ontario (ONO) to Siem-reap (REP) is 7,711 miles (12,409 km, 6,701 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONO to REP?
A nonstop flight takes about 15h 35m 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 Ontario and Siem-reap?
Siem-reap is 13 hours ahead of Ontario.
What is the cheapest way to fly from ONO to REP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONO–REP that never appear on search engines, with no booking fees.