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RMS to KOS: distance & flight time
Ramstein (Ramstein Air Base) → Sihanoukville (Sihanoukville International Airport)
5,932 mi
9,547 km · 5,155 nm
12h 6m
estimated nonstop flight time
+5h
time difference · heading east
See live RMS→KOS fares Phone-only fares on this route — call free
Flight time details
5,932 miles nonstop takes roughly 12h 6m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time gain when reading arrival times on your ticket.
The two airports
- RMS — Ramstein Air Base · Ramstein, Germany
- 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 RMS
- ZQW · Zweibrücken Airport18 mi away
- FRA · Frankfurt am Main Airport60 mi away
- SCN · Saarbrücken Airport27 mi away
- HHN · Frankfurt-Hahn Airport38 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 RMS from KOS?
The flight distance from Ramstein (RMS) to Sihanoukville (KOS) is 5,932 miles (9,547 km, 5,155 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RMS to KOS?
A nonstop flight takes about 12h 6m 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 RMS to KOS?
Nonstop service on RMS–KOS 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 12h 6m nonstop estimate.
What is the time difference between Ramstein and Sihanoukville?
Sihanoukville is 5 hours ahead of Ramstein.
What is the cheapest way to fly from RMS to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RMS–KOS that never appear on search engines, with no booking fees.
Why are some RMS to KOS fares phone-only?
Consolidator contracts let us sell certain RMS–KOS 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.