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KOS to KKC: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Khon Kaen (Khon Kaen Airport)
411 mi
661 km · 357 nm
1h 22m
estimated nonstop flight time
Same time
time difference · heading north
See live KOS→KKC fares Phone-only fares on this route — call free
Flight time details
411 miles nonstop takes roughly 1h 22m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- KKC — Khon Kaen Airport · Khon Kaen, Thailand
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 KKC
- UTH · Udon Thani Airport64 mi away
- ROI · Roi Et Airport70 mi away
- BFV · Buri Ram Airport91 mi away
- LOE · Loei Airport97 mi away
Frequently asked questions
How far is KOS from KKC?
The flight distance from Sihanoukville (KOS) to Khon Kaen (KKC) is 411 miles (661 km, 357 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to KKC?
A nonstop flight takes about 1h 22m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from KOS to KKC?
Nonstop service on KOS–KKC depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 22m nonstop estimate.
What is the cheapest way to fly from KOS to KKC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–KKC that never appear on search engines, with no booking fees.
Why are some KOS to KKC fares phone-only?
Consolidator contracts let us sell certain KOS–KKC tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.