Cheap flights from Sihanoukville to Singapore from $177 KOS → SIN
Sihanouk International Airport (KOS) → Changi International Airport (SIN)
The cheapest one-way found recently is $177 with AirAsia Cambodia, 30 Mar 2027, found 2 days ago.
- Cheapest one-way found recently
- $177, found 2 days ago
- Cheapest month to fly
- March 2027, one-way fares from $177 found in the last 7 days
One-way
The cheapest one-way fare on each of 5 departure dates is usually $185 to $193.
Cheapest one-way found recently
$177
30 Mar 2027 · AirAsia Cambodia
Sihanouk International Airport (KOS) → Changi International Airport (SIN)
Leaves 12:15 p.m. · 18 h trip
1 stop
found 2 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$177 30 Mar 2027found 2 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 36 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $177 to $213.
At $177, the cheapest one-way found recently is at the low end of that range.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 5 departure dates from 24 Dec to 30 Mar 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 30 Mar 2027 to compare.
Every date we hold
5 fares on 5 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 24 Dec | $217 | AirAsia Cambodia | Sihanouk International Airport (KOS) → Changi International Airport (SIN) | 1 stop | found 4 days ago | Open this trip |
| 26 Jan 2027 | $186 | AirAsia Cambodia | Sihanouk International Airport (KOS) → Changi International Airport (SIN) | 1 stop | found 6 days ago | Open this trip |
| 27 Jan 2027 | $185 | AirAsia | Sihanouk International Airport (KOS) → Changi International Airport (SIN) | 1 stop | found 6 days ago | Open this trip |
| 19 Mar 2027 | $193 | AirAsia | Sihanouk International Airport (KOS) → Changi International Airport (SIN) | 1 stop | found 2 days ago | Open this trip |
| 30 Mar 2027 | $177 | AirAsia Cambodia | Sihanouk International Airport (KOS) → Changi International Airport (SIN) | 1 stop | found 2 days ago | Open this trip |
Which month looks cheapest?
March 2027 is the cheapest month — from $177.
Airlines on the cheapest dates: AirAsia Cambodia, AirAsia.
Premium cabin fares from Sihanoukville to Singapore
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 30 Mar 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Sihanoukville to Singapore?
One-way
The cheapest fares were 30 to 59 days before departure.
From the cheapest one-way each day between 24 Sept and 11 Nov (36 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 30–59 days | $195 | $191 | Cheapest seen | 26 |
| 60–89 days | $220 | $185 | +13% | 25 |
| 90–179 days | $196 | $177 | +1% | 13 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Phu Quoc → Singapore
68 km from Sihanoukville
$196
5 Jan 2027 – 6 Jan 2027 · PQC → SIN · out nonstop, back nonstop
found yesterday
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Phu Quoc → Singapore
68 km from Sihanoukville
$64
$113 less than flying from Sihanoukville
27 Jul 2027 · PQC → SIN · 1 stop
found 3 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest one-way found recently is for 30 Mar 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a one-way flight from Sihanoukville to Singapore?
The cheapest one-way found recently is $177 with AirAsia Cambodia, 30 Mar 2027, found 2 days ago. The cheapest one-way fare on each of 5 departure dates is usually $185 to $193.
What is the cheapest month to fly from Sihanoukville to Singapore?
March 2027 is the cheapest month for a one-way, from $177, 30 Mar 2027, found 2 days ago.
How far ahead should I book a flight from Sihanoukville to Singapore?
In 36 days of prices between 24 Sept and 11 Nov, one-way fares were cheapest 30 to 59 days before departure.
How long is the flight from Sihanoukville to Singapore?
The cheapest one-way found recently, with AirAsia Cambodia on 30 Mar 2027, takes 18 h with 1 stop.
Which airlines have the cheapest flights from Sihanoukville to Singapore?
Between 24 Dec and 30 Mar 2027, AirAsia Cambodia has the cheapest one-way on 3 of the 5 departure dates we hold, and AirAsia on 2.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work