£215 Cheap Flights from Sihanoukville (KOS) to Bangkok (BKK)

View £215 flight on Sun, 10 May 2026Opens in a new window

Popular airlines from Sihanoukville (KOS) to Suvarnabhumi International Airport (BKK)

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Cheap Flights from Sihanoukville (KOS) to Bangkok (BKK)

Prices were available within the past 7 days and start at £215 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much is a flight from KOS to Suvarnabhumi Intl. Airport (BKK)?
If you're travelling from Sihanoukville Airport (KOS) to Bangkok Airport, round-trip journeys start from . This price is based on airfares advertised within the last 7 days on Expedia for flights departing within the next year, so don't let a good deal pass you by. Book today and save yourself both money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Sihanoukville Airport (KOS) to Suvarnabhumi Intl. Airport (BKK)?
Each air carrier has its own set of terms and conditions. If you do decide to cancel, follow the instructions on our Customer Service Portal.
How do I find cheap flights from KOS to Suvarnabhumi Intl. Airport (BKK) 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 Sihanoukville Airport (KOS) to Suvarnabhumi Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Sihanoukville Airport (KOS) to Suvarnabhumi Airport?
With a flight distance of 470 kilometres, it's just a short hop from Sihanouk Intl. Airport to Suvarnabhumi Airport. It might be a quick one, but it's still worth bringing along something to read.
Which airlines fly direct from Sihanoukville Airport (KOS) to Suvarnabhumi Airport?
Currently, no airlines offer direct flights from KOS to BKK. You'll need to book a flight with at least one stop. To get the best price and connections, lock in your airfare well in advance.
Are Sihanoukville Airport (KOS) to Suvarnabhumi Airport flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Sihanouk Intl. Airport to Suvarnabhumi Airport at the last minute could save you some serious cash. However, it could end up costing a great deal more! If you'd prefer not to take any chances, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to 12 months in advance. If your preferred air carrier hasn't released tickets yet, check back frequently as deals are updated on Expedia all the time.

Frequently asked questions

How do I find cheap flights from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.)?
To find a cheap flight from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.)?
There are approximately 2 connecting flights per day from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.) (BKK). Some common connection points include Tan Son Nhat Intl. (SGN), SAI (SAI), and Shenzhen Intl. (SZX).
What is the earliest flight from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.)?
The earliest flight from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.) typically departs at approximately 9:50 AM local time. This service is operated by K6 and VN, and is a seasonal service active in April. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.)?
You'll typically find the most flights from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.) on a Wednesday, with around 1 flight available. This gives you a good selection for your travel plans. Flight schedules are consistent throughout the week.
What are the most popular departure times for flights from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.)?
The most popular departure times for flights from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.) are between 9am and 12pm. About 100% of passengers prefer this time. This timing works well because it allows for a morning departure, giving you a good portion of the day upon arrival at your destination.
How long does it take to fly from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.)?
A flight from KOS to BKK with a layover takes around 8 hours 50 minutes, with the route covering approximately 290 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.)?
Select the "Business class" and "First class" filters when looking for KOS to BKK flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.) flight with Expedia?
It's easy to earn miles on a Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Bangkok from KOS (KOS)?
If you're planning to travel to Bangkok from KOS (KOS), you can fly directly into Suvarnabhumi Intl. (BKK) Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.) at the last minute?
Typically, booking a last minute flight from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.) flight and hotel package?
Securing a Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.)?
If you booked your Sihanoukville (KOS) to Bangkok (BKK-Suvarnabhumi Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Sihanoukville
Destination airport
Suvarnabhumi Intl.
Distance
464 km

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