Cheap Flights from Sihanoukville to Chiang Mai

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Flight deals from Sihanoukville to Chiang Mai

Looking for a cheap last-minute deal or the best return flight from Sihanoukville to Chiang Mai? Find the lowest prices on one-way and return tickets right here.

Sihanoukville to Chiang Mai: Alternative routes

Compare routes from Sihanoukville to Chiang Mai below. You may find an airport to fly into that's cheaper, faster, or easier than Chiang Mai.

Sihanoukville to Chiang Mai: Flight information

The things to know before you go.
Cheapest flight found542 €
Cheapest month to flyJanuary

Finding cheap flights from Sihanoukville to Chiang Mai: Frequently asked questions

The best price we found for a return flight from Sihanoukville to Chiang Mai is 542 €. 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.
Currently, there are no airlines that fly direct from Sihanoukville to Chiang Mai. But we found flights with one or more stops from 542 €.
As of April 2025, there are no flights flying from Sihanoukville to Chiang Mai.
The cheapest month to fly from Sihanoukville to Chiang Mai is usually April 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Sihanoukville Airport to Chiang Mai Airport on Friday, 30 January 2026.
No airlines currently offer direct flights between Sihanoukville Airport and Chiang Mai Airport. Most routes have one or more stops.
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 Chiang Mai 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.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chiang Mai is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, AirAsia offers the cheapest flight tickets to Chiang Mai.

Flying from Sihanouk International Airport (KOS) to Chiang Mai International Airport (CNX): what you need to know

  • Sihanoukville and Chiang Mai are in the UTC+7 timezone. This means you won't have to adjust your watch after you land.

  • To ensure you catch your KOS to CNX flight, allow plenty of time to check in and find your gate. Turning up two hours before international departures and one hour before domestic flights is the general rule.

  • During popular months such as January, it's best to get to the airport earlier than normal. Plan to arrive two hours before a domestic departure and four hours ahead of an international flight whenever you're travelling during a peak period in general.

How to find the cheapest flights from Sihanouk International Airport (KOS) to Chiang Mai International Airport (CNX)

  • Right now, 191 € is the cheapest price we've found for a one-way Sihanouk International Airport to Chiang Mai International Airport flight. The best price for a return plane ticket is 542 €. Bear in mind that fares may change due to availability when booking.

  • It's usually smart to book in advance if you want to get cheap tickets from KOS to CNX. That's because airlines change prices based on demand, which tends to increase closer to the date of departure.

  • If you can be flexible with your trip dates, try using the 'Whole month' search function. It'll show you the lowest price across every month when looking for your flight from Sihanouk International Airport to Chiang Mai International Airport.

  • You won't have to check every day to see if fares have dropped when you set up a Price Alert. We'll update you the moment a special offer becomes available on cheap flights from KOS to CNX.

  • Lock in the ideal flight for you by using the filters. To see the 'Best,' 'Fastest' or 'Cheapest' flights from Sihanouk International Airport to Chiang Mai International Airport, use the 'Sort by' tool. You can also filter results by airline, arrival and departure times, and journey duration.

Handy information about Sihanouk International Airport (KOS)

  • Of all flights departing from Sihanouk International Airport, 78.65% touch down on time at their destination.

  • Sihanouk International Airport is around 24 kilometres from central Sihanoukville. If you're catching a cab, ride-sharing or driving from the centre, it'll take 45 minutes or so to get there, depending on the traffic.

  • Want a place to stay before your flight from Sihanouk International Airport to Chiang Mai International Airport? Consider Sok Sabay Resort. Catch some z's here before heading to KOS.

Arriving at Chiang Mai International Airport (CNX)

Getting from Chiang Mai International Airport (CNX) to central Chiang Mai

  • Chiang Mai International Airport to central Chiang Mai has a drive time of around 10 minutes. It's approximately 5 kilometres away.

  • It'll take around 25 minutes to get there by public transport.

When to fly to Chiang Mai International Airport (CNX)

  • The quietest month for a flight from Sihanouk International Airport to Chiang Mai International Airport is February, while August is the busiest. Choose the ideal time to go to Chiang Mai based on whether you prefer a faster pace or a more relaxed vibe.

  • The warmest month in Chiang Mai is April, with the temperature ranging between 22ºC (72ºF) and 42ºC (108ºF). Lock in your flights from Sihanouk International Airport to Chiang Mai International Airport in this month if this is the kind of weather you like.

  • January has average temperatures of between 12ºC (54ºF) and 31ºC (88ºF). Look for cheap tickets from KOS to CNX around that time if you want to travel in cooler conditions.

Explore more of Thailand

  • Chiang Mai has its own special appeal, but there are so many other parts of Thailand just waiting to be discovered. Around 434 kilometres east of Chiang Mai, a visit to Udon Thani will keep you on the move. Start with popular sights like Nong Prajak Public Park, Krom Luang Prachaksinlapakhom Monument and Chinesisches Tor.

  • Around 80 kilometres south-east of Chiang Mai, Lampang is another essential stop in Thailand. No visit is complete without checking out Baan Sao Nak, Ratsadapisek Bridge and Horse-Drawn Carriage.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.