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KOS to RFD: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Rockford (Chicago Rockford International Airport)
8,702 mi
14,005 km · 7,562 nm
17h 32m
estimated nonstop flight time
-12h
time difference · heading north
See live KOS→RFD fares Phone-only fares on this route — call free
Flight time details
8,702 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 set-back when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- RFD — Chicago Rockford International Airport · Rockford, United States
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 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
Near RFD
Frequently asked questions
How far is KOS from RFD?
The flight distance from Sihanoukville (KOS) to Rockford (RFD) is 8,702 miles (14,005 km, 7,562 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to RFD?
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 Sihanoukville and Rockford?
Rockford is 12 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to RFD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–RFD that never appear on search engines, with no booking fees.