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UGN to REP: distance & flight time
Chicago (Waukegan National Airport) → Siem-reap (Siem Reap International Airport)
8,508 mi
13,693 km · 7,394 nm
17h 9m
estimated nonstop flight time
+12h
time difference · heading north
See live UGN→REP fares Phone-only fares on this route — call free
Flight time details
8,508 miles nonstop takes roughly 17h 9m 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
- UGN — Waukegan National Airport · Chicago, 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 UGN
- ORD · Chicago O'Hare International Airport31 mi away
- ENW · Kenosha Regional Airport12 mi away
- PWK · Chicago Executive Airport21 mi away
- RAC · John H Batten Airport24 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 UGN from REP?
The flight distance from Chicago (UGN) to Siem-reap (REP) is 8,508 miles (13,693 km, 7,394 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from UGN to REP?
A nonstop flight takes about 17h 9m 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 Chicago and Siem-reap?
Siem-reap is 12 hours ahead of Chicago.
What is the cheapest way to fly from UGN to REP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on UGN–REP that never appear on search engines, with no booking fees.