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UGN to KOS: distance & flight time
Chicago (Waukegan National Airport) → Sihanoukville (Sihanoukville International Airport)
8,703 mi
14,006 km · 7,563 nm
17h 32m
estimated nonstop flight time
+12h
time difference · heading north
See live UGN→KOS fares Phone-only fares on this route — call free
Flight time details
8,703 miles nonstop takes roughly 17h 32m 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
- KOS — Sihanoukville International Airport · Sihanoukville, 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 KOS
- PQC · Phu Quoc International Airport37 mi away
- PNH · Phnom Penh International Airport106 mi away
- VKG · Rach Gia Airport110 mi away
- KZC · Kampong Chhnang Airport132 mi away
Frequently asked questions
How far is UGN from KOS?
The flight distance from Chicago (UGN) to Sihanoukville (KOS) is 8,703 miles (14,006 km, 7,563 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from UGN to KOS?
A nonstop flight takes about 17h 32m 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 Sihanoukville?
Sihanoukville is 12 hours ahead of Chicago.
What is the cheapest way to fly from UGN to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on UGN–KOS that never appear on search engines, with no booking fees.