Cheap flights from Sihanoukville to Singapore
Cheapest current fares: $261 in November 2026 on connecting flights.
Cheapest month-by-month fares
Lowest available fare per calendar month from Sihanoukville (KOS) to Singapore (SIN). Refreshed daily.
Sihanoukville (KOS) → Singapore (SIN)
- November 2026 $261
Frequently asked questions
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What is the cheapest month to fly from Sihanoukville to Singapore?
Based on current 6-month forward fare data, November 2026 is the cheapest month to fly from Sihanoukville (KOS) to Singapore (SIN), with fares starting from $261.
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What is the lowest current fare from KOS to SIN?
The lowest currently-listed fare from Sihanoukville (KOS) to Singapore (SIN) is $261 on 2026-11-21.
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Is there a direct flight from Sihanoukville to Singapore?
There is currently no non-stop service from KOS to SIN. Most travellers connect through a hub airport. See our route page for current stopover options.
Related guides for this route
Sibling pages — full route detail, airport overviews, visa context, per-airline routes.