The cheapest times to fly from HKG to USM are

  • August 20th to March 25th (except the weeks of September 24th, December 17th, December 24th, January 15th, and January 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 HKG to USM is early to mid October. Prices can be as high as $1156 for Saturday flights during early to mid July, or as low as $371 for Wednesday flights around early to mid October.


When to Fly to Ko Samui

Flying from Hong Kong (HKG) to Koh Samui (USM) will usually cost between $371 to $818 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid October with an average ticket price of $380. Due to high demand the most expensive time to fly is early to mid July, with an average price of $967. Planning your trip to low-cost times can easily save you $587 on economy flights and even more on first-class flights. Generally, any price below $457 can be considered a good price for a round-trip HKG to USM flight.

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

HKG to USM Flight Prices

Compared to other flights, the HKG to USM flight is much cheaper than the average and costs less than the average flight leaving from Hong Kong. The average price per mile (for a direct flight) is $0.22, which is below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly to Ko Samui, and Fridays are the most expensive days to return to Hong Kong. Selecting flights on the least expensive days could save you up to $25 (5%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $499. Return trip prices are from the USM to HKG 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 HKG to USM can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 3 hour 16 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 HKG to USM while comparing.

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

  • 124 miles (200 km) away from USM
  • Usually 54.81% less expensive than USM
  • Nonstop flights available

See HKG to KBV flights


Flight Hacking HKG 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 HKG to USM — but Champion Traveler does!

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

  • Price for both tickets: $392
  • Average savings: $65 (14.22%)

See HKG to BKK flights

Hack #2: Bangkok (HKG > BKK > USM)

  • Price for both tickets: $432
  • Average savings: $26 (5.58%)

See HKG to HKT flights

Hack #3: Krabi (HKG > KBV > USM)

  • Price for both tickets: $438
  • Average savings: $19 (4.16%)

See HKG to KBV flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 25 major airlines flying this route most often: Air New Zealand, Bangkok Airways, Cathay Dragon, Cathay Pacific, China Airlines, El Al, Emirates, EVA Air, Finnair, Garuda Indonesia, Hong Kong Airlines, Hong Kong Express, JAL, Malaysia Airlines, Oman Air, Philippine Airlines, Qantas, Singapore Airlines, THAI, Thai AirAsia, Thai Lion Mentari, Thai Smile, Turkish Airlines, Vietnam Airlines, Virgin Australia, and potentially more during busy seasons.

How far away is it from Samui Airport to Hong Kong International Airport?

The distance between the two airports is roughly 1272 miles or 2047 kilometers.

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

The real-world flight time for a nonstop HKG to USM flight is about 3 hour 16 minutes.

How many flights go between Hong Kong and Koh Samui?

It depends on the day of the week and the date, but a typical day might have around 65 available flights from HKG to USM.


Airport Location Info


Departing Airport

Origination code HKG
Origination airport name Hong Kong International Airport
City Hong Kong
Country Hong Kong
Latitude 22.3
Longitude 113.9

Return Airport

Destination code USM
Destination airport name Samui Airport
City Koh Samui
Country Thailand
Latitude 9.5
Longitude 100.1


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.