Need help booking?
Unpublished phone-only deals available
PDX to REP: distance & flight time
Portland (Portland International Airport) → Siem-reap (Siem Reap International Airport)
7,440 mi
11,973 km · 6,465 nm
15h 3m
estimated nonstop flight time
+14h
time difference · heading northwest
See live PDX→REP fares Phone-only fares on this route — call free
Flight time details
7,440 miles nonstop takes roughly 15h 3m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- PDX — Portland International Airport · Portland, 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 PDX
- TTD · Portland Troutdale Airport10 mi away
- HIO · Portland Hillsboro Airport17 mi away
- KLS · Southwest Washington Regional Airport39 mi away
- SLE · Salem Municipal Airport/McNary Field51 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 PDX from REP?
The flight distance from Portland (PDX) to Siem-reap (REP) is 7,440 miles (11,973 km, 6,465 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PDX to REP?
A nonstop flight takes about 15h 3m 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 Portland and Siem-reap?
Siem-reap is 14 hours ahead of Portland.
What is the cheapest way to fly from PDX to REP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PDX–REP that never appear on search engines, with no booking fees.