Need help booking?
Unpublished phone-only deals available
KOS to SPF: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field)
8,263 mi
13,299 km · 7,181 nm
16h 40m
estimated nonstop flight time
-13h
time difference · heading north
See live KOS→SPF fares Phone-only fares on this route — call free
Flight time details
8,263 miles nonstop takes roughly 16h 40m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time set-back when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- SPF — Black Hills Airport-Clyde Ice Field · Spearfish-South Dakota, 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 SPF
- RCA · Ellsworth Air Force Base41 mi away
- RAP · Rapid City Regional Airport47 mi away
- GCC · Gillette Campbell County Airport87 mi away
- CDR · Chadron Municipal Airport119 mi away
Frequently asked questions
How far is KOS from SPF?
The flight distance from Sihanoukville (KOS) to Spearfish-South Dakota (SPF) is 8,263 miles (13,299 km, 7,181 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to SPF?
A nonstop flight takes about 16h 40m 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 Spearfish-South Dakota?
Spearfish-South Dakota is 13 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to SPF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–SPF that never appear on search engines, with no booking fees.