Cheap Flights from Siem Reap–Angkor (SAI) to Sihanoukville (KOS)

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Flight deals from Siem Reap–Angkor Airport to Sihanoukville Airport

Looking for a cheap last-minute deal or the best return flight from Siem Reap–Angkor Airport to Sihanoukville Airport? If you want to travel next month, return fares start from £145. Find the lowest prices on one-way and return tickets right here.

Sihanoukville.£83 per passenger.Departing Mon, 8 Jun.One-way flight with Air Cambodia.Outbound direct flight with Air Cambodia departs from Siem Reap–Angkor on Mon, 8 Jun, arriving in Sihanoukville.Price includes taxes and charges.From £83, select.

Sihanoukville.£83 per passenger.Departing Sun, 21 Feb.One-way flight with Air Cambodia.Outbound direct flight with Air Cambodia departs from Siem Reap–Angkor on Sun, 21 Feb, arriving in Sihanoukville.Price includes taxes and charges.From £83, select.

Sihanoukville.£90 per passenger.Departing Sun, 19 Jul.One-way flight with Air Cambodia.Outbound direct flight with Air Cambodia departs from Siem Reap–Angkor on Sun, 19 Jul, arriving in Sihanoukville.Price includes taxes and charges.From £90, select.

Sihanoukville.£90 per passenger.Departing Sat, 2 May.One-way flight with Air Cambodia.Outbound direct flight with Air Cambodia departs from Siem Reap–Angkor on Sat, 2 May, arriving in Sihanoukville.Price includes taxes and charges.From £90, select.

Sihanoukville.£90 per passenger.Departing Sun, 12 Apr.One-way flight with Air Cambodia.Outbound direct flight with Air Cambodia departs from Siem Reap–Angkor on Sun, 12 Apr, arriving in Sihanoukville.Price includes taxes and charges.From £90, select.

Sihanoukville.£90 per passenger.Departing Fri, 28 Aug.One-way flight with Air Cambodia.Outbound direct flight with Air Cambodia departs from Siem Reap–Angkor on Fri, 28 Aug, arriving in Sihanoukville.Price includes taxes and charges.From £90, select.

Sihanoukville.£92 per passenger.Departing Sat, 24 Oct.One-way flight with Air Cambodia.Outbound direct flight with Air Cambodia departs from Siem Reap–Angkor on Sat, 24 Oct, arriving in Sihanoukville.Price includes taxes and charges.From £92, select.

Sihanoukville.£100 per passenger.Departing Wed, 16 Dec.One-way flight with Air Cambodia.Outbound direct flight with Air Cambodia departs from Siem Reap–Angkor on Wed, 16 Dec, arriving in Sihanoukville.Price includes taxes and charges.From £100, select.

Sihanoukville.£100 per passenger.Departing Sun, 13 Sep.One-way flight with Air Cambodia.Outbound direct flight with Air Cambodia departs from Siem Reap–Angkor on Sun, 13 Sep, arriving in Sihanoukville.Price includes taxes and charges.From £100, select.

Sihanoukville.£100 per passenger.Departing Tue, 5 Jan.One-way flight with Air Cambodia.Outbound direct flight with Air Cambodia departs from Siem Reap–Angkor on Tue, 5 Jan, arriving in Sihanoukville.Price includes taxes and charges.From £100, select.

Sihanoukville.£100 per passenger.Departing Thu, 5 Nov.One-way flight with Air Cambodia.Outbound direct flight with Air Cambodia departs from Siem Reap–Angkor on Thu, 5 Nov, arriving in Sihanoukville.Price includes taxes and charges.From £100, select.

Sihanoukville.£266 per passenger.Departing Fri, 12 Mar.One-way flight with AirAsia Cambodia.Outbound indirect flight with AirAsia Cambodia, departs from Siem Reap–Angkor on Fri, 12 Mar, arriving in Sihanoukville.Price includes taxes and charges.From £266, select.

Find the cheapest month to fly from Siem Reap–Angkor to Sihanoukville

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Siem Reap–Angkor to Sihanoukville flights are currently cheapest in June.

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Direct flights from Siem Reap–Angkor to Sihanoukville

Siem Reap–Angkor to Sihanoukville: Alternative routes

Compare routes from Siem Reap–Angkor to Sihanoukville below. You may find an airport to fly into that's cheaper, faster, or easier than Sihanoukville.

Sihanoukville

3 miles from central Sihanoukville

ClosestCheapest

from £83

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Siem Reap to Sihanoukville: Flight information

The things to know before you go.

Cheapest flight found	£83
Cheapest month to fly	June
Average flight time	1 hr, 9 mins
Most popular airline	Air Cambodia
Average flights per week	15

Finding cheap flights from Siem Reap–Angkor to Sihanoukville: Frequently asked questions

How much are return flights from Siem Reap–Angkor to Sihanoukville?

The best price we found for a return flight from Siem Reap–Angkor to Sihanoukville is £145. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Siem Reap–Angkor to Sihanoukville?

1 hour and 9 minutes is the average flight time from Siem Reap–Angkor to Sihanoukville.

Which airlines fly direct from Siem Reap–Angkor to Sihanoukville?

Air Cambodia and Vietnam Airlines fly direct from Siem Reap–Angkor to Sihanoukville.

How many flights are there a week from Siem Reap–Angkor to Sihanoukville?

As of April 2026, there are 15 flights per week flying from Siem Reap–Angkor to Sihanoukville.

When is the cheapest time to fly from Siem Reap–Angkor to Sihanoukville?

The cheapest month to fly from Siem Reap–Angkor to Sihanoukville is usually May.

Which upcoming date is cheapest to fly from Siem Reap–Angkor Airport to Sihanoukville Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Siem Reap–Angkor Airport to Sihanoukville Airport on Thursday, 14 May 2026.

Can I get a direct flight from Siem Reap–Angkor Airport to Sihanoukville Airport?

Yes – the average flight time is 1 hour and 9 minutes.

How can I find the best flight deal to Sihanoukville?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Sihanoukville but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Sihanoukville?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Sihanoukville is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Siem Reap–Angkor Airport to Sihanoukville with?

Currently, Air Cambodia offers the cheapest flight tickets to Sihanoukville.

Flying from Siem Reap-Ankor International Airport (SAI) to Sihanouk International Airport (KOS): what you need to know

Hop on a direct flight from Siem Reap-Ankor International Airport to Sihanouk International Airport and you'll be in the air for an average of 1 hour 5 minutes.
Siem Reap and Sihanoukville share the same timezone, UTC+7.
Flights from SAI to KOS start from 09:15 — the earliest with AirAsia Cambodia. The last service of the day is at 18:05 with Cambodia Angkor Air. Overall, you can take your pick of 94 weekly Siem Reap-Ankor International Airport to Sihanouk International Airport flights.
For a stress-free journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to catch your SAI to KOS flight.
During popular months like April, you'll want to get to the airport earlier. Plan to arrive two hours before domestic departures and four hours ahead of international flights when you travel during peak periods in general.
Cambodia Angkor Air is your ticket to exploring Sihanoukville (and maybe even some other exciting parts of Cambodia!). Browse the direct flights from Siem Reap-Ankor International Airport to Sihanouk International Airport offered by this carrier.
Most travellers choose to travel with Cambodia Angkor Air on this route.
Choose a stopover if you'd like to break up your flight. Just uncheck 'Direct flights only' to see the options for tickets from Siem Reap-Ankor International Airport to Sihanouk International Airport. Tan Son Nhat International Airport is a popular stopover on the SAI to KOS route.

How to find the cheapest flights from Siem Reap-Ankor International Airport (SAI) to Sihanouk International Airport (KOS)

Currently, £83 is the cheapest price we've found for a one-way Siem Reap-Ankor International Airport to Sihanouk International Airport flight. The best price for a return plane ticket is £145. Keep in mind that fares may change due to demand when booking.
Book six months before travelling. After looking at the numbers on our calendar, this is how far you should book ahead to find cheap tickets from SAI to KOS.
Schedule your trip for May. That's the cheapest month for flights from Siem Reap-Ankor International Airport to Sihanouk International Airport. If you're flexible with your travel dates, use the 'Whole month' tool to see the cheapest airfare across every month.
You won't have to check every day to see if fares have dropped when you create a Price Alert. We'll update you as soon as there's a new deal on cheap flights from SAI to KOS.
Tailor your flights with filters. Select your arrival and departure times, total journey duration and airlines. You can also sort results by 'Fastest,' 'Cheapest' or 'Best' flights from Siem Reap-Ankor International Airport to Sihanouk International Airport.

Handy information about Siem Reap-Ankor International Airport (SAI)

Siem Reap-Ankor International Airport maintains a solid on-time performance, reducing your chances of a delayed flight. Departures from SAI land at their destination as scheduled 80.01% of the time.
Central Siem Reap to Siem Reap-Ankor International Airport is around 30 miles. Depending on traffic, it'll take about 1 hour to get there if you're ride-sharing, catching a cab or driving.
Get your flight from Siem Reap-Ankor International Airport to Sihanouk International Airport off to a hassle-free start. Just a quick ride from SAI, stay at Chansor Community Homestay 18 and be well-rested for the trip ahead.

Arriving at Sihanouk International Airport (KOS)

After your Siem Reap-Ankor International Airport to Sihanouk International Airport flight has landed, relax and unwind at a nearby hotel. Sok Sabay Resort is a comfortable option within easy reach of KOS.

Getting from Sihanouk International Airport (KOS) to central Sihanoukville

Sihanouk International Airport is roughly 15 miles from the centre of Sihanoukville. The drive time takes about 45 minutes.

When to fly to Sihanouk International Airport (KOS)

The quietest month for a flight from Siem Reap-Ankor International Airport to Sihanouk International Airport is April, while January is the busiest. Choose the best time to go to Sihanoukville based on whether you prefer a more fast-paced or easygoing experience.
Book your flight from Siem Reap-Ankor International Airport to Sihanouk International Airport for May if you want to visit Sihanoukville during its warmest month. Expect temperatures of between 25ºC (77ºF) and 31ºC (88ºF).
Look for cheap tickets from SAI to KOS in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between 23ºC (73ºF) and 29ºC (84ºF) on average.

Explore more of Cambodia

Phnom Penh is just one of the many cities in Cambodia waiting to be discovered once you've seen the sights of Sihanoukville. Around 120 miles away to the north-east, popular attractions include Royal Palace, Tuol Sleng Genocide Museum and Wat Phnom.
Battambang is another sought-after destination in Cambodia and is around 170 miles north of Sihanoukville. No journey is complete without dropping by The Garden of SamDech Sar Kheng, Spean Thmor Chas and សួននាគសន្តិភាព-Dragon Peace Garden.