The cheapest times to fly from BKK to USM are

  • February 26th to April 1st
  • May 7th to June 24th
  • August 20th to December 16th (except the weeks of September 24th, October 1st, November 5th, and December 3rd)

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 BKK to USM is mid to late September. Prices can be as high as $348 for Saturday flights during late December, or as low as $192 for Tuesday flights around mid to late September.


When to Fly to Ko Samui

Flying from Bangkok (BKK) to Koh Samui (USM) will usually cost between $193 to $310 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid to late September with an average ticket price of $192. Due to high demand the most expensive time to fly is late December, with an average price of $335. Planning your trip to low-cost times can easily save you $143 on economy flights and even more on first-class flights. Generally, any price below $248 can be considered a good price for a round-trip BKK to USM flight.

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

BKK to USM Flight Prices

Compared to other flights, the BKK to USM flight is much cheaper than the average and costs much less than the average flight leaving from Bangkok. The average price per mile (for a direct flight) is $0.53, which is above average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to USM, and Monday the cheapest day to fly back into BKK. 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 Tuesday and returning a week later will cost an average of $238. Return trip prices are from the USM to BKK 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 BKK to USM 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.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is a nonstop flight from BKK to USM while comparing.

Destination alternative #1: Krabi Airport (KBV) in Krabi

  • 124 miles (200 km) away from USM
  • Usually 75.20% less expensive than USM
  • Nonstop flights available

See BKK to KBV flights

Destination alternative #2: Surat Thani Airport (URT) in Surat Thani

  • 69 miles (111 km) away from USM
  • Usually 59.27% less expensive than USM
  • Nonstop flights available

See BKK to URT flights


Flight Questions Answered

Still have questions about flying from BKK to USM? 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, Thai Vietjet Air, Turkish Airlines, Virgin Australia, and potentially more during busy seasons.

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

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

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

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

How many flights go between Bangkok and Koh Samui?

It depends on the day of the week and the date, but a typical day might have around 52 available flights from BKK to USM.


Airport Location Info


Departing Airport

Origination codeBKK
Origination airport nameSuvarnabhumi International Airport

Return Airport

Destination codeUSM
Destination airport nameSamui Airport
CityKoh Samui


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.