Flights from Preah Sihanouk to Singapore
Goodtern scores every Preah Sihanouk–Singapore itinerary 0–100 against what you actually care about — price, time, stops, comfort, carbon — and shows the receipts for why #1 is #1.
Distance
1,025 km (637 mi)
Estimated non-stop time
~1h 52m
Usually cheapest
3–9 weeks before you fly
Route type
Short-haul
Distance is great-circle; flight time is a physics-based estimate, not a schedule. Booking guidance reflects typical fare patterns, not a price promise.
When to book
On short-haul routes like Preah Sihanouk to Singapore, fares typically bottom out 3–9 weeks before you fly, climb steeply in the final fortnight, and peak-season dates (summer holidays, Christmas and New Year, Easter) both cost more and sell out earlier. Goodtern's best-time-to-buy signal tracks this curve against your own search history and flags the moment a fare looks like a genuine deal.
Airports on this route
Preah SihanoukCambodia
- Sihanouk (KOS)
SingaporeSingapore
- Changi (SIN)
Frequently asked questions
How long is the flight from Preah Sihanouk to Singapore?
Non-stop, expect roughly 1h 52m in the air — an estimate based on the 1,025 km distance, not a schedule. Connecting itineraries take longer.
How far is Singapore from Preah Sihanouk?
About 1,025 km (637 miles) by great-circle distance — a short-haul route.
When is the cheapest time to book flights from Preah Sihanouk to Singapore?
For short-haul routes like this one, fares are typically at their lowest 3–9 weeks before you fly. That's a pattern, not a guarantee — peak dates (summer, Christmas) sell out earlier.
Which airports can I use for this route?
Served by Sihanouk (KOS). Served by Changi (SIN). Goodtern's nearby-airport search compares all of them automatically.