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KOS to XSP: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Singapore (Seletar Airport)
633 mi
1,019 km · 550 nm
1h 51m
estimated nonstop flight time
+1h
time difference · heading south
See live KOS→XSP fares Phone-only fares on this route — call free
Flight time details
633 miles nonstop takes roughly 1h 51m gate to gate, flying south. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- XSP — Seletar Airport · Singapore, Singapore
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 XSP
- SIN · Singapore Changi Airport10 mi away
- QPG · Paya Lebar Air Base5 mi away
- TGA · Tengah Air Base11 mi away
- JHB · Senai International Airport21 mi away
Frequently asked questions
How far is KOS from XSP?
The flight distance from Sihanoukville (KOS) to Singapore (XSP) is 633 miles (1,019 km, 550 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to XSP?
A nonstop flight takes about 1h 51m 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 Singapore?
Singapore is 1 hour ahead of Sihanoukville.
What is the cheapest way to fly from KOS to XSP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–XSP that never appear on search engines, with no booking fees.