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RIW to KOS: distance & flight time
Riverton WY (Riverton Regional Airport) → Sihanoukville (Sihanoukville International Airport)
8,214 mi
13,219 km · 7,138 nm
16h 34m
estimated nonstop flight time
+13h
time difference · heading northwest
See live RIW→KOS fares Phone-only fares on this route — call free
Flight time details
8,214 miles nonstop takes roughly 16h 34m 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
- RIW — Riverton Regional Airport · Riverton WY, 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 RIW
- LND · Hunt Field22 mi away
- WRL · Worland Municipal Airport67 mi away
- PWY · Ralph Wenz Field71 mi away
- BPI · Miley Memorial Field90 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 RIW from KOS?
The flight distance from Riverton WY (RIW) to Sihanoukville (KOS) is 8,214 miles (13,219 km, 7,138 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RIW to KOS?
A nonstop flight takes about 16h 34m 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 Riverton WY and Sihanoukville?
Sihanoukville is 13 hours ahead of Riverton WY.
What is the cheapest way to fly from RIW to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RIW–KOS that never appear on search engines, with no booking fees.