S$229 Cheap Flights from Sihanoukville to Singapore

View S$229 flight on Tue, 5 May, 2026Opens in a new window

Popular airlines from Sihanoukville (KOS) to Singapore Changi Airport (SIN)

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Cheap Flights from Sihanoukville to Singapore (KOS-SIN)

Prices were available within the past 7 days and start at S$229 for one-way flights and S$458 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

AirAsia
Fri, 7 Aug - Sat, 22 Aug
KOS
Sihanoukville
SIN
Singapore
S$458 Return, found 8 hours ago
S$458
Return
found 8 hours ago
Select AirAsia flight, departing Fri, 7 Aug from Sihanoukville to Singapore, returning Sat, 22 Aug, priced at S$458 found 8 hours ago
AirAsia
Fri, 7 Aug - Sat, 22 Aug
KOS
Sihanoukville
SIN
Singapore
S$461 Return, found 8 hours ago
S$461
Return
found 8 hours ago
Select AirAsia flight, departing Fri, 7 Aug from Sihanoukville to Singapore, returning Sat, 22 Aug, priced at S$461 found 8 hours ago
AirAsia
Fri, 7 Aug - Sat, 22 Aug
KOS
Sihanoukville
SIN
Singapore
S$464 Return, found 8 hours ago
S$464
Return
found 8 hours ago
Select AirAsia flight, departing Fri, 7 Aug from Sihanoukville to Singapore, returning Sat, 22 Aug, priced at S$464 found 8 hours ago
AirAsia
Fri, 7 Aug - Sat, 22 Aug
KOS
Sihanoukville
SIN
Singapore
S$467 Return, found 8 hours ago
S$467
Return
found 8 hours ago
Select AirAsia flight, departing Fri, 7 Aug from Sihanoukville to Singapore, returning Sat, 22 Aug, priced at S$467 found 8 hours ago
AirAsia
Fri, 7 Aug - Sat, 22 Aug
KOS
Sihanoukville
SIN
Singapore
S$469 Return, found 8 hours ago
S$469
Return
found 8 hours ago
Select AirAsia flight, departing Fri, 7 Aug from Sihanoukville to Singapore, returning Sat, 22 Aug, priced at S$469 found 8 hours ago
AirAsia
Fri, 7 Aug - Sat, 22 Aug
KOS
Sihanoukville
SIN
Singapore
S$472 Return, found 8 hours ago
S$472
Return
found 8 hours ago
Select AirAsia flight, departing Fri, 7 Aug from Sihanoukville to Singapore, returning Sat, 22 Aug, priced at S$472 found 8 hours ago
AirAsia
Fri, 7 Aug - Sat, 22 Aug
KOS
Sihanoukville
SIN
Singapore
S$475 Return, found 8 hours ago
S$475
Return
found 8 hours ago
Select AirAsia flight, departing Fri, 7 Aug from Sihanoukville to Singapore, returning Sat, 22 Aug, priced at S$475 found 8 hours ago
AirAsia
Fri, 7 Aug - Sat, 22 Aug
KOS
Sihanoukville
SIN
Singapore
S$477 Return, found 8 hours ago
S$477
Return
found 8 hours ago
Select AirAsia flight, departing Fri, 7 Aug from Sihanoukville to Singapore, returning Sat, 22 Aug, priced at S$477 found 8 hours ago
AirAsia Cambodia
Tue, 3 Mar - Tue, 10 Mar
KOS
Sihanoukville
SIN
Singapore
S$559 Return, found 3 days ago
S$559
Return
found 3 days ago
Select AirAsia Cambodia flight, departing Tue, 3 Mar from Sihanoukville to Singapore, returning Tue, 10 Mar, priced at S$559 found 3 days ago
Air Cambodia
Fri, 7 Aug - Sat, 22 Aug
KOS
Sihanoukville
SIN
Singapore
S$591 Return, found 8 hours ago
S$591
Return
found 8 hours ago
Select Air Cambodia flight, departing Fri, 7 Aug from Sihanoukville to Singapore, returning Sat, 22 Aug, priced at S$591 found 8 hours ago

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Frequently asked questions

How much is a flight from Sihanoukville Airport (KOS) to Changi Airport (SIN)?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price quoted for a round-trip flight between KOS and Changi Airport (SIN) was S$458. Fares this cheap don't hang around, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from KOS to Changi Airport?
The majority of flights can be cancelled online, but each airline has different terms and conditions. If you do have to cancel your flight, visit our Customer Service Portal and follow the instructions.
How do I find cheap flights from Sihanouk Intl. Airport to Singapore Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for KOS to Changi Airport (SIN) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Sihanoukville Airport (KOS) to SIN?
With a flight distance of 1,050 kilometres, it's just a hop from KOS to Changi Airport. It might be a quick journey, but it's still worth bringing a good book to read.
Which airlines fly direct from Sihanoukville Airport (KOS) to Singapore Airport?
At the moment, no airlines offer direct flights from Sihanoukville Airport (KOS) to Singapore Airport. You'll have to book a flight with at least one stop. To score the best price and connections, lock in your airfare well in advance.
Are Sihanouk Intl. Airport to Changi Airport (SIN) flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from Sihanouk Intl. Airport to Changi Airport can be hit-or-miss. It is possible to find a bargain, but you could also completely miss out! If you'd rather start your trip planning early on, Expedia compares flight deals up to 12 months in advance. Just keep in mind that not all airlines issue their prices that far in advance. Our top tip? Check back often as prices are updated frequently.

Travel information

Origin airport
Sihanoukville
Destination airport
Changi
Return price
S$458
Distance
1020 km

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Perfect flights from Sihanoukville to Singapore

Your Journey from Sihanoukville to Singapore

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With Expedia, you have access to a wide range of airlines, including AirAsia Cambodia, AirAsia, Air Cambodia. Our selection of flights from Sihanoukville to Changi caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

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Experience the joy of finding cheap flights from Sihanoukville to Changi that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$229 and roundtrip prices from S$458*.
 

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Sihanoukville to Singapore

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