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OCW to REP: distance & flight time
Washington (Warren Field) → Siem-reap (Siem Reap International Airport)
9,052 mi
14,568 km · 7,866 nm
18h 13m
estimated nonstop flight time
+12h
time difference · heading north
See live OCW→REP fares Phone-only fares on this route — call free
Flight time details
9,052 miles nonstop takes roughly 18h 13m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time gain when reading arrival times on your ticket.
The two airports
- OCW — Warren Field · Washington, 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 OCW
- PGV · Pitt Greenville Airport19 mi away
- EWN · Coastal Carolina Regional Airport34 mi away
- ISO · Kinston Regional Jetport At Stallings Field36 mi away
- RWI · Rocky Mount Wilson Regional Airport51 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 OCW from REP?
The flight distance from Washington (OCW) to Siem-reap (REP) is 9,052 miles (14,568 km, 7,866 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OCW to REP?
A nonstop flight takes about 18h 13m 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 OCW to REP?
Nonstop service on OCW–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 18h 13m nonstop estimate.
What is the time difference between Washington and Siem-reap?
Siem-reap is 12 hours ahead of Washington.
What is the cheapest way to fly from OCW to REP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OCW–REP that never appear on search engines, with no booking fees.
Why are some OCW to REP fares phone-only?
Consolidator contracts let us sell certain OCW–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.