The cheapest times to fly from USM to CTU are

  • February 12th to April 29th
  • May 14th to June 10th
  • July 30th to August 12th
  • October 15th 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 CTU is early to mid August. Prices can be as high as $1648 for Friday flights during mid to late August, or as low as $421 for Tuesday flights around early to mid August.


When to Fly to Chengdu

Flying from Koh Samui (USM) to Chengdu (CTU) will usually cost between $484 to $968 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid August with an average ticket price of $539. Due to high demand the most expensive time to fly is mid to late August, with an average price of $1041. Planning your trip to low-cost times can easily save you $503 on economy flights and even more on first-class flights. Generally, any price below $708 can be considered a good price for a round-trip USM to CTU flight.

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

USM to CTU Flight Prices

Compared to other flights, the USM to CTU flight is 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 $0.3, which is in the normal range for a flight.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly to Chengdu, and Saturdays are the most expensive days to return to Ko Samui. Selecting flights on the least expensive days could save you up to $106 (13%) 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 $645. Return trip prices are from the CTU 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 CTU can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 3 hour 38 minutes may be realistic.


Flight Hacking USM to CTU

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 USM to CTU — but Champion Traveler does!

Hack #1: Bangkok (USM > BKK > CTU)

  • Price for both tickets: $496
  • Average savings: $213 (30.01%)

See USM to HKT flights

Hack #2: Phuket (USM > HKT > CTU)

  • Price for both tickets: $533
  • Average savings: $175 (24.72%)

See USM to BKK flights

Hack #3: Kuala Lumpur (USM > KUL > CTU)

  • Price for both tickets: $559
  • Average savings: $149 (21.05%)

See USM to KUL flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 19 major airlines flying this route most often: Air Macau, Bangkok Airways, Cathay Dragon, Cathay Pacific, Chengdu Airlines, China Airlines, China Southern, EVA Air, Hainan, Hong Kong Airlines, Qantas, Shenzhen, Sichuan Airlines, Singapore Airlines, THAI, Tibet Airlines, Vietnam Airlines, Virgin Australia, Xiamen, and potentially more during busy seasons.

How far away is it from Shuangliu Airport to Samui Airport?

The distance between the two airports is roughly 1473 miles or 2371 kilometers.

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

The real-world flight time for a nonstop USM to CTU flight is about 3 hour 38 minutes.

How many flights go between Koh Samui and Chengdu?

It depends on the day of the week and the date, but a typical day might have around 68 available flights from USM to CTU.


Airport Location Info


Departing Airport

Origination codeUSM
Origination airport nameSamui Airport
CityKoh Samui

Return Airport

Destination codeCTU
Destination airport nameShuangliu 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.