The cheapest times to fly from SIN to USM are

  • January 1st to January 14th
  • January 29th to April 1st
  • September 3rd to December 2nd (except the week of October 22nd)

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 SIN to USM is late October to early November. Prices can be as high as $559 for Friday flights during late December, or as low as $288 for Tuesday flights around late October to early November.


When to Fly to Ko Samui

Flying from Singapore (SIN) to Koh Samui (USM) will usually cost between $289 to $425 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late October to early November with an average ticket price of $303. Due to high demand the most expensive time to fly is late December, with an average price of $471. Planning your trip to low-cost times can easily save you $168 on economy flights and even more on first-class flights. Generally, any price below $326 can be considered a good price for a round-trip SIN to USM flight.

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

SIN to USM Flight Prices

Compared to other flights, the SIN to USM flight is much cheaper than the average and costs much less than the average flight leaving from Singapore. The average price per mile (for a direct flight) is $0.32, which is in the normal range for a flight.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to USM, and Wednesday the cheapest day to fly back into SIN. Fridays are the most expensive days to fly to Ko Samui, and Saturdays are the most expensive days to return to Singapore. Selecting flights on the least expensive days could save you up to $42 (11%) 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 $318. Return trip prices are from the USM to SIN 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 SIN to USM can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 2 hour 7 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 SIN to USM while comparing.

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

  • 124 miles (200 km) away from USM
  • Usually 69.59% less expensive than USM
  • Nonstop flights available

See SIN to KBV flights


Flight Hacking SIN to USM

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from SIN to USM — but Champion Traveler does!

Hack #1: Phuket (SIN > HKT > USM)

  • Price for both tickets: $318
  • Average savings: $8 (2.3%)

See SIN to flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 20 major airlines flying this route most often: Bangkok Airways, Cathay Pacific, China Airlines, Emirates, EVA Air, Finnair, Garuda Indonesia, JAL, Jetstar, KLM, Malaysia Airlines, Oman Air, Philippine Airlines, Qantas, Scoot, Singapore Airlines, THAI, Thai AirAsia, Thai Lion Mentari, Vietnam Airlines, and potentially more during busy seasons.

How far away is it from Samui Airport to Singapore Changi International Airport?

The distance between the two airports is roughly 627 miles or 1009 kilometers.

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

The real-world flight time for a nonstop SIN to USM flight is about 2 hour 7 minutes.

How many flights go between Singapore and Koh Samui?

It depends on the day of the week and the date, but a typical day might have around 49 available flights from SIN to USM.


Airport Location Info


Departing Airport

Origination codeSIN
Origination airport nameSingapore Changi 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.