HK$1,143+ Cheap flights to Ko Samui

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.
— USM
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Flights to Ko Samui in 2025

Find the latest flights to Ko Samui in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 15 September 2025.

Return from

HK$2,434

One-way from

HK$1,143

Popular in

July

Cheapest in

September

Average price

HK$3,733

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. 3% potential increase in price (HK$1,193 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (HK$378 potential savings vs. average return price).
Average for return flights in September 2025
Price to beat on a round-trip flight from Hong Kong Intl to Ko Samui.

Find flight deals to Ko Samui

Cheapest flights to Ko Samui
Explore the most affordable flight options available to Ko Samui. Find the lowest fares based on data from user searches, with prices last updated on 15 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
Wed 29-1016:55HKG - USM
1 stop15h 15mMultiple Airlines
Wed 5-1107:00USM - HKG
1 stop6h 40mMultiple Airlines
Deal found 14-9HK$2,473
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
Wed 15-1016:55HKG - USM
1 stop15h 25mMultiple Airlines
Wed 22-1008:45USM - HKG
1 stop8h 50mMultiple Airlines
Deal found 14-9HK$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
Thu 9-1008:05HKG - USM
1 stop12h 40mMultiple Airlines
Thu 16-1008:00USM - HKG
1 stop6h 55mMultiple Airlines
Deal found 13-9HK$2,722
Thu 18-1220:10HKG - USM
1 stop12h 00mMultiple Airlines
Mon 22-1207:00USM - HKG
1 stop6h 40mMultiple Airlines
Deal found 14-9HK$2,738

Cheapflights Fare Finder

 
Locate flights to Ko Samui that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 15 September 2025.
Use the filters below to find and compare flights to Ko Samui that are best for you.

Fly from

Hong Kong

Route

Departure

Return

Price

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Fri 21-11

16:55-07:10

1 stop15h 15m

Ko Samui

Tue 25-11

07:00-14:40

1 stop6h 40m

HK$2,434

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Tue 4-11

12:30-18:50

1 stop7h 20m

Ko Samui

Sun 9-11

08:55-17:10

1 stop7h 15m

HK$2,792

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Thu 9-10

14:45-19:45

1 stop6h 00m

Ko Samui

Thu 16-10

08:00-15:55

1 stop6h 55m

HK$2,878

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

Mon 6-10

22:05-07:20

1 stop10h 15m

Ko Samui

Mon 13-10

08:55-23:35

3 stops37h 40m

HK$3,127

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Sat 4-10

22:05-14:40

2 stops17h 35m

Ko Samui

Sat 11-10

08:45-12:10

2 stops26h 25m

HK$3,586

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Thu 30-10

12:30-18:50

1 stop7h 20m

Ko Samui

Thu 6-11

08:55-17:10

1 stop7h 15m

HK$3,757

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Fri 5-12

13:30-07:45

2 stops19h 15m

Ko Samui

Tue 9-12

11:40-15:55

Nonstop3h 15m

HK$3,827

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Wed 29-10

11:20-07:10

2 stops20h 50m

Ko Samui

Wed 5-11

07:00-20:05

2 stops12h 05m

HK$3,834

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 19 results
1
2

Best time to book a flight to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui 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 to Ko Samui

When is the best time to book a flight 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 12 September 2025.

The price you pay for your flight 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.

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 15 September 2025.
See what other customers who have flown with Bangkok Airways and Cathay Pacific to Thailand have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.0

Boarding

8.0

Comfort

7.9

Food

7.2

Crew

8.5

Entertainment

6.2

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.

Overall

8.0

Boarding

8.0

Comfort

7.9

Food

7.2

Crew

8.5

Entertainment

6.2

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.

Overall

8.0

Boarding

8.0

Comfort

7.9

Food

7.2

Crew

8.5

Entertainment

6.2

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.

FAQs about flying to Ko Samui

  • What airport do you fly into for flights to Ko Samui?

    Most people fly into Ko Samui (USM) if they book a flight to Ko Samui. Ko Samui is conveniently located just 3.3 km from Ko Samui’s city centre. On average, Ko Samui has 6 flights from Hong Kong per day from 2 airlines.

  • Can I find cheaper flights to Ko Samui if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Ko Samui on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Ko Samui?

    Based on reviews from Cheapflights users, Bangkok Airways is rated the highest out of the airlines that fly to Ko Samui.

  • What is the cheapest airport to fly to in Ko Samui?

    Ko Samui is currently the cheapest airport to fly to in Ko Samui. One-way flights to Ko Samui typically cost HK$1,091, while return flights cost around HK$1,820.

  • Does Ko Samui have rental cars?

    Yes. Those touching down at Ko Samui can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Ko Samui?

    Yes. Ko Samui has hotels nearby for those requiring accommodations. Diamond Pool Villa Samui is the closest property to Ko Samui (0.0 km away from Ko Samui).

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

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