Flights from Sihanoukville to Phnom Penh Starting at £78

We've found these cheap flights for you. You can book one-way or return flight tickets.

Round-trip
One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Find the best time to fly from Sihanoukville to Phnom Penh

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Cheapest flights

From price

16 23
23 30
Apr

30 6
6 13
13 20
20 27
May

27 4
4 11
11 18
18 25
Jun

25 1
1 8

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

FAQ

When are flight tickets from Sihanoukville (KOS) to Phnom Penh (PNH) the cheapest?

Airlines adjust prices for flights from Sihanoukville to Phnom Penh based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much are flights from Sihanoukville (KOS) to Phnom Penh (PNH) cost?

According to Trip.com's data, the lowest price is around £146.
What is the transportation method from the main airport to downtown in Phnom Penh?
- The distance from Phnom Penh International Airport to downtown is about 7km, by taxi about 20 minutes.
What's the most popular airline for direct flights from Sihanoukville (KOS) to Phnom Penh (PNH)?

Cambodia Airways operates 2 direct flights from Sihanoukville (KOS) to Phnom Penh (PNH).
How many airports in Phnom Penh (PNH)?

There are 1 airport(s) in Phnom Penh (PNH): Phnom Penh International Airport.

How to find a cheap flight from Sihanoukville to Phnom Penh

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Sihanoukville to Phnom Penh. Book your flights at the right time and save more.

Be flexible with your travel dates to get the cheapest flight from Sihanoukville to Phnom Penh.

Simply tap "Date" on the flight search bar to browse through the calendar and check out airfare from Sihanoukville to Phnom Penh over the next 6 months in 2025. If you're planning to fly within the next three months, it looks like the most affordable option is on Wed, Apr 30, with one-way flights priced at just £78.

Compare cheap flight deals from Sihanoukville to Phnom Penh across hundreds of airlines.

With our extensive search, you can compare prices from over 500 airlines to find the cheapest flight tickets from Sihanoukville to Phnom Penh. The cheapest airline for this route is Air Cambodia.

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Book early or wait until the last minute.

It's usually best to book early. Flight tickets are often cheapest when they're first released, typically about a year before the departure date. So, have a look online as soon as the flights you're interested in become available. If you miss the cheapest time, you might still find some good deals as the departure date gets closer.

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Flight Information from Sihanoukville to Phnom Penh

Cheapest direct flight price	£77
Off-season travel month	January
Peak season for travel	February
Flight distance	170.05km
Popular airline	Air Cambodia