HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ko Samui

$155+ Cheap flights from Hong Kong (HKG) to Ko Samui (USM)

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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
HKG — USM
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Hong Kong to Ko Samui with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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

Cheap flight deals from Hong Kong to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Hong Kong (HKG) to Ko Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 20, 2025.

Round-trip from

$348
(Kiwi.com)

One-way from

$155
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$604

Good round-trip deal

$473 or less
From Hong Kong Intl to Ko Samui
Search Deals
One-way flight from Hong Kong Intl to Ko Samui
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals
Price to beat on a round-trip flight from Hong Kong Intl to Ko Samui.
Search Deals

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 August 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/162:20 pmHKG - USM
1 stop18h 55mMultiple Airlines
Tue 9/237:25 pmUSM - HKG
1 stop21h 55mMultiple Airlines
Deal found 8/19$348
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/128:20 pmHKG - USM
1 stop12h 15mMultiple Airlines
Sun 9/148:45 amUSM - HKG
1 stop9h 40mMultiple Airlines
Deal found 8/20$353
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:55 amHKG - USM
1 stop13h 30mMultiple Airlines
Sat 9/208:45 amUSM - HKG
1 stop8h 35mMultiple Airlines
Deal found 8/19$355
This Mytrip deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/812:35 pmHKG - USM
2 stops20h 15mMultiple Airlines
Thu 9/118:45 amUSM - HKG
1 stop8h 35mMultiple Airlines
Deal found 8/20$361
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/82:20 pmHKG - USM
1 stop18h 00mMultiple Airlines
Mon 10/136:55 amUSM - HKG
1 stop29h 10mMultiple Airlines
Deal found 8/19$376
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/112:20 pmHKG - USM
1 stop6h 25mMultiple Airlines
Sun 9/148:45 amUSM - HKG
1 stop9h 40mMultiple Airlines
Deal found 8/20$390

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated August 20, 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

Depart

Return

Price

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Tue 9/16

2:20 pm-8:15 am

1 stop18h 55m

Ko Samui

Tue 9/23

7:25 pm-6:20 pm

1 stop21h 55m

$348

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Fri 9/12

8:20 pm-7:35 am

1 stop12h 15m

Ko Samui

Sun 9/14

8:45 am-7:25 pm

1 stop9h 40m

$353

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Tue 9/16

7:55 am-8:25 pm

1 stop13h 30m

Ko Samui

Sat 9/20

8:45 am-6:20 pm

1 stop8h 35m

$355

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Mon 9/8

12:35 pm-7:50 am

2 stops20h 15m

Ko Samui

Thu 9/11

8:45 am-6:20 pm

1 stop8h 35m

$361

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Wed 10/8

2:20 pm-7:20 am

1 stop18h 00m

Ko Samui

Mon 10/13

6:55 am-1:05 pm

1 stop29h 10m

$376

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Thu 9/11

2:20 pm-7:45 pm

1 stop6h 25m

Ko Samui

Sun 9/14

8:45 am-7:25 pm

1 stop9h 40m

$390

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Sat 10/4

7:40 am-4:35 pm

1 stop9h 55m

Ko Samui

Sat 10/11

7:00 pm-5:40 am

2 stops9h 40m

$395

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Wed 10/8

2:20 pm-7:20 am

1 stop18h 00m

$155

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Thu 10/23

2:20 pm-7:20 am

1 stop18h 00m

$159

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Sat 1/31

4:55 pm-7:10 am

1 stop15h 15m

$171

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 13 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 round-trip 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 round-trip flight from Hong Kong to Ko Samui. Price data was last updated on August 8, 2025.

The best time to book flights from Hong Kong to Ko Samui is 47 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest time of day to fly from HKG 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 August 20, 2025.

It’s typically best to fly out from Hong Kong to Ko Samui at noon. Doing so could potentially save you 68% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 August 20, 2025.
Get a feel of what it's like to fly with Bangkok Airways and Cathay Pacific from Hong Kong to Ko Samui by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Bangkok Airways
8.0
Very good
111 reviews

Entertainment

6.2

Overall

8.0

Food

7.2

Crew

8.5

Boarding

7.9

Comfort

7.8

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.
Bangkok Airways
8.0
Very good
111 reviews
Bangkok Airways
8.0
Very good
111 reviews

Entertainment

6.2

Overall

8.0

Food

7.2

Crew

8.5

Boarding

7.9

Comfort

7.8

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.
Cathay Pacific
7.6
Good
972 reviews
Bangkok Airways
8.0
Very good
111 reviews

Entertainment

6.2

Overall

8.0

Food

7.2

Crew

8.5

Boarding

7.9

Comfort

7.8

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 airports do I use to fly from Hong Kong to Ko Samui?

    To fly from Hong Kong to Ko Samui, you need to book a flight from Hong Kong Intl (HKG) to Ko Samui (USM). Nonstop flights to Ko Samui from Hong Kong Intl take 3h 20m on average. When it comes time to book airfare, you have a few options: there are 6 outbound flights from Hong Kong Intl to Ko Samui offered by 2 different airlines.

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

    Flying on Bangkok Airways is currently your cheapest option to Ko Samui, with prices starting at $393. Another option worth looking into is Cathay Pacific, starting at $634 round trip. Bangkok Airways is priced at 29% 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?

    Consider Hong Kong Airlines (73%), Qatar Airways (73%) or KLM (73%) when booking your flight. These represent the most reliable airlines when flying from Hong Kong to Ko Samui.

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

    While on average a flight from Hong Kong to Ko Samui is generally $499, our data shows the cheapest flight currently is $444. When looking at the most popular route, (Hong Kong Intl - Ko Samui), you can expect to pay $459 for that flight.

  • 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 vacation 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

Traveling 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.
Hong Kong to Suvarnabhumi flights
Hong Kong to Phuket City flights
Hong Kong to Chiang Mai flights
Hong Kong to Don Mueang Intl flights
Hong Kong to Krabi flights

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 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest$393Average$558FlexibilityNo cancel feeOn-time74%
Cathay PacificCheapest$634Average$757FlexibilityNo cancel feeOn-time72%

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.