The cheapest times to fly from USM to BKK are

  • March 5th to April 1st
  • May 14th to June 24th
  • August 20th to December 9th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from USM to BKK is mid to late November. Prices can be as high as $340 for Saturday flights during early January, or as low as $192 for Monday flights around mid to late November.


When to Fly to Bangkok

Flying from Koh Samui (USM) to Bangkok (BKK) will usually cost between $193 to $307 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid to late November with an average ticket price of $193. Due to high demand the most expensive time to fly is early January, with an average price of $332. Planning your trip to low-cost times can easily save you $139 on economy flights and even more on first-class flights. Generally, any price below $249 can be considered a good price for a round-trip USM to BKK flight.

See below for a graph of average weekly prices for the USM to BKK route. All prices are for round-trip tickets in USD.

USM to BKK Flight Prices

Compared to other flights, the USM to BKK flight is much cheaper than the average and costs much less than the average flight leaving from Ko Samui. The average price per mile (for a direct flight) is $0.54, which is above average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to fly to BKK, and Tuesday the cheapest day to fly back into USM. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $11 (4%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $240. Return trip prices are from the BKK to USM flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from USM to BKK can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 1 hour 30 minutes may be realistic.


Flight Questions Answered

Still have questions about flying from USM to BKK? We’ve got answers.

Which airlines fly this route?

You can find 16 major airlines flying this route most often: Air New Zealand, Bangkok Airways, Cathay Pacific, Emirates, Finnair, Garuda Indonesia, Hong Kong Airlines, Malaysia Airlines, Oman Air, Philippine Airlines, Qantas, Singapore Airlines, THAI, Turkish Airlines, Vietnam Airlines, Virgin Australia, and potentially more during busy seasons.

How far away is it from Suvarnabhumi International Airport to Samui Airport?

The distance between the two airports is roughly 289 miles or 465 kilometers.

How long does it take to fly from USM to BKK?

The real-world flight time for a nonstop USM to BKK flight is about 1 hour 30 minutes.

How many flights go between Koh Samui and Bangkok?

It depends on the day of the week and the date, but a typical day might have around 54 available flights from USM to BKK.


Airport Location Info


Departing Airport

Origination codeUSM
Origination airport nameSamui Airport
CityKoh Samui

Return Airport

Destination codeBKK
Destination airport nameSuvarnabhumi International Airport


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.