Cheap flights from Hong Kong to Ko Samui from HK$1,143

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6-10. Fares are subject to change and may not be available on all flights or dates of travel.
HKG — USM
14 Oct — 21 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Hong Kong to Ko Samui are usually found in May or November, booked 47 days in advance, depart on a Friday or Wednesday and return on a Monday

Cheap flight deals from Hong Kong to Ko Samui

Keep the following information in mind while searching for Hong Kong to Ko Samui flight deals. Data was last updated 14 September 2025.

Round-trip from

HK$2,434

One-way from

HK$1,143

Popular in

July

Cheapest in

May

Average price

HK$3,889

Good round-trip deal

HK$3,497 or less
28-10-4-11
  • 28-10-4-11
  • 2 total stops
  • 21h 30m total
  • Hong Kong to Ko Samui
6-10
  • 6-10
  • 1 total stop
  • 9h 40m total
  • Hong Kong to Ko Samui
Highest demand for flights based on searches. 4% potential increase in price (HK$1,461 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (HK$359 potential savings vs. average return price).
Average for round-trip flights in September 2025
Price to beat on a round-trip flight from Hong Kong to Ko Samui.

Find flight deals from Hong Kong to Ko Samui

Cheapest flights from Hong Kong to Ko Samui
Explore the most affordable flight options available from Hong Kong to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 September 2025.

Tue 28-1016:55HKG - USM
1 stop15h 15mMultiple Airlines
Tue 4-1108:15USM - HKG
1 stop6h 15mMultiple Airlines
Deal found 13-9HK$2,434
Mon 20-1007:40HKG - USM
1 stop14h 55mMultiple Airlines
Sat 25-1008:45USM - HKG
1 stop29h 45mMultiple Airlines
Deal found 12-9HK$2,458
Tue 14-1016:55HKG - USM
1 stop15h 25mMultiple Airlines
Tue 21-1007:00USM - HKG
1 stop6h 25mMultiple Airlines
Deal found 14-9HK$2,481
Mon 27-1016:55HKG - USM
1 stop15h 15mMultiple Airlines
Fri 31-1008:15USM - HKG
1 stop6h 15mMultiple Airlines
Deal found 12-9HK$2,551
Thu 9-1008:05HKG - USM
1 stop12h 40mMultiple Airlines
Thu 16-1019:00USM - HKG
1 stop19h 55mMultiple Airlines
Deal found 12-9HK$2,567
Mon 6-1016:15HKG - USM
1 stop16h 05mMultiple Airlines
Mon 13-1008:55USM - HKG
1 stop13h 25mMultiple Airlines
Deal found 13-9HK$2,582
Sat 18-1007:55HKG - USM
1 stop13h 30mMultiple Airlines
Mon 20-1008:00USM - HKG
1 stop6h 55mMultiple Airlines
Deal found 12-9HK$2,652

Cheapflights Fare Finder

 
Customise your flight search to find flights from Hong Kong to Ko Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 70,647 searches. Data last updated 14 September 2025.
Use the filters below to find and compare flights from Hong Kong to Ko Samui that are best for you.

Fly from

Hong Kong

Fly to

Ko Samui

Route

Departure

Return

Price

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Wed 29-10

16:55-07:10

1 stop15h 15m

Ko Samui

Tue 4-11

08:15-15:30

1 stop6h 15m

HK$2,434

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Mon 6-10

16:15-07:20

1 stop16h 05m

Ko Samui

Mon 13-10

08:55-23:20

1 stop13h 25m

HK$2,582

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Sat 18-10

07:55-20:25

1 stop13h 30m

Ko Samui

Mon 20-10

08:00-15:55

1 stop6h 55m

HK$2,652

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Thu 30-10

12:30-18:50

1 stop7h 20m

Ko Samui

Sun 2-11

19:45-11:20

1 stop14h 35m

HK$2,940

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Thu 9-10

08:05-19:45

1 stop12h 40m

Ko Samui

Thu 16-10

10:55-15:15

Nonstop3h 20m

HK$2,971

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Fri 10-10

14:55-18:30

2 stops28h 35m

Ko Samui

Fri 17-10

08:55-23:20

1 stop13h 25m

HK$2,979

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Tue 14-10

08:45-16:55

2 stops9h 10m

Ko Samui

Tue 21-10

07:00-14:25

1 stop6h 25m

HK$3,259

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Mon 6-10

16:55-07:35

1 stop15h 40m

Ko Samui

Fri 10-10

08:45-04:10

2 stops18h 25m

HK$3,360

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Mon 20-10

16:15-18:35

Nonstop3h 20m

Ko Samui

Sat 25-10

10:55-15:15

Nonstop3h 20m

HK$3,492

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Mon 6-10

22:40-07:20

1 stop9h 40m

HK$1,143

Flights are sorted by cheapest return flights first.

Deals found on 13-9

Showing 1-10 of 20 results
1
2

Best time to book a flight from Hong Kong to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Hong Kong with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Hong Kong to Ko Samui

How far ahead should I book a flight from Hong Kong to Ko Samui?

Use this chart to determine the optimal time to book a return flight from Hong Kong to Ko Samui. Price data was last updated on 29 August 2025.

The price you pay for your flight from Hong Kong to Ko Samui may vary depending on when you book. For the best chance of a lower fare, look to book 47 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest time of day to fly from HK to USM?

Find hourly flight availability from Hong Kong to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 September 2025.

A simple way to save on the total cost of your ticket is to fly from Hong Kong to Ko Samui at midday. If you’re flexible enough to do this you can expect to save up to 65% on your trip compared to booking a flight in the afternoon.

Weekly flight availability from Hong Kong to Ko Samui

Explore weekly flight availability from Hong Kong to Ko Samui. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 14 September 2025.

The most flights from HK0 to USM are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

Reviews of airlines servicing Ko Samui

Get insights into the airlines that provide service to Ko Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ko Samui. Reviews last updated 14 September 2025.
Read reviews from past customers who have flown with Bangkok Airways and Cathay Pacific from Hong Kong to Ko Samui. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.9

Entertainment

6.2

Boarding

8.0

Overall

8.0

Crew

8.5

Food

7.2

Reviews

1 / 7
10.0
Excellent

Douglas,May 2025

USM - HKG

Flight was as expected: up and down at the right time and location without drama. Kayak needs to modify this survey to allow for “N/A.” For example, we didn’t use the entertainment system but are forced to rate it. In this case, the results are skewed and may lead to incorrect assumptions.

Comfort

7.9

Entertainment

6.2

Boarding

8.0

Overall

8.0

Crew

8.5

Food

7.2

Reviews

1 / 7
10.0
Excellent

Douglas,May 2025

USM - HKG

Flight was as expected: up and down at the right time and location without drama. Kayak needs to modify this survey to allow for “N/A.” For example, we didn’t use the entertainment system but are forced to rate it. In this case, the results are skewed and may lead to incorrect assumptions.

Comfort

7.9

Entertainment

6.2

Boarding

8.0

Overall

8.0

Crew

8.5

Food

7.2

Reviews

1 / 7
10.0
Excellent

Douglas,May 2025

USM - HKG

Flight was as expected: up and down at the right time and location without drama. Kayak needs to modify this survey to allow for “N/A.” For example, we didn’t use the entertainment system but are forced to rate it. In this case, the results are skewed and may lead to incorrect assumptions.

Related info for your journey

Find useful and relevant information for your journey from Hong Kong to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Ko Samui from Hong Kong?

    Most people fly into Ko Samui (USM) if they book a flight to Ko Samui from Hong Kong. Ko Samui is conveniently located just 3.3 km from Ko Samui’s city centre.

  • How popular is this Hong Kong to Ko Samui flight route?

  • How long is the flight from Hong Kong to Ko Samui?

    Departing from Hong Kong to Ko Samui will take you 7h 20m. The distance between Hong Kong and Ko Samui is about 2047 km.

  • What are the cheapest airlines flying from Hong Kong to Ko Samui round-trip?

    Currently priced at HK$2,817, Bangkok Airways will fly you from Hong Kong to Ko Samui and back. In addition to Bangkok Airways, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Cathay Pacific for as low as HK$4,584. Bangkok Airways is priced at 35% lower than the current average price of a flight leaving 3 months from now.

  • What are the most reliable airlines from Hong Kong to Ko Samui?

    Before booking your flight to Ko Samui from Hong Kong, have a look at the most reliable airlines to get you to your destination on time: Hong Kong Airlines (73%), Qatar Airways (73%), KLM( 73%).

  • What are the cheapest flights from Hong Kong to Ko Samui?

    The cheapest flight price from Hong Kong to Ko Samui is HK$2,887. On average you can expect to pay HK$3,832. The most popular route, (Hong Kong Intl - Ko Samui), can usually be booked for HK$2,434.

  • Can I find deals for flights from Hong Kong to Ko Samui that include hotel bookings?

    Yes. In addition to deals on Hong Kong to Ko Samui flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Hong Kong to Ko Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hong Kong to Ko Samui.

  • Can I find deals for business class flights from Hong Kong to Ko Samui?

    Yes. Cheapflights offers flight deals from Hong Kong to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Hong Kong to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Hong Kong to Ko Samui

Discover the top 2 airlines that operate flights from Hong Kong to Ko Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 70,647 searches. Data last updated 14 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapestHK$2,817AverageHK$4,083FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Cathay PacificCheapestHK$4,584AverageHK$5,756FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Hong Kong to Ko Samui?

Cheapflights makes it easy to find Hong Kong to Ko Samui flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Hong Kong to Ko Samui?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Hong Kong to Ko Samui for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Hong Kong to Ko Samui with no change fees?

Need flexible booking options for your flight to Ko Samui from Hong Kong? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Hong Kong to Ko Samui become cheaper?

Yes, Cheapflights offers price alerts on Hong Kong to Ko Samui flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.