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HK$1,347+ 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 4-3. Fares are subject to change and may not be available on all flights or dates of travel.
— USM
31 Dec — 7 Jan1
1 adult
1 adult, Economy, 0 bags

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Enter your travel dates to find the best prices.

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 1 December 2025.

Sat 13-1215:05HKG - USM
2 stops28h 45mMultiple Airlines
Tue 16-1208:15USM - HKG
1 stop6h 15mMultiple Airlines
Deal found 30-11HK$3,707
Mon 8-1210:10HKG - USM
2 stops22h 20mEVA Air
Thu 11-1219:00USM - HKG
2 stops18h 20mEVA Air
Deal found 30-11HK$3,730
Mon 8-1217:05HKG - USM
Nonstop3h 30mBangkok Airways
Thu 11-1211:40USM - HKG
Nonstop3h 15mBangkok Airways
Deal found 30-11HK$3,769
Tue 2-1207:25HKG - USM
1 stop11h 05mMultiple Airlines
Sat 6-1208:15USM - HKG
1 stop6h 25mMultiple Airlines
Deal found 1-12HK$3,785
Fri 5-1207:25HKG - USM
1 stop12h 00mMultiple Airlines
Sat 6-1208:15USM - HKG
1 stop10h 55mMultiple Airlines
Deal found 30-11HK$3,886
Tue 2-1210:10HKG - USM
2 stops23h 30mEVA Air
Sat 6-1207:15USM - HKG
2 stops24h 45mEVA Air
Deal found 1-12HK$3,910
Tue 2-1217:05HKG - USM
Nonstop3h 30mBangkok Airways
Tue 9-1211:40USM - HKG
Nonstop3h 15mBangkok Airways
Deal found 29-11HK$3,987
Tue 2-1219:40HKG - USM
2 stops13h 05mEVA Air
Tue 9-1221:10USM - HKG
2 stops21h 55mEVA Air
Deal found 29-11HK$4,011
Wed 17-1217:05HKG - USM
Nonstop3h 30mMultiple Airlines
Thu 1-108:55USM - HKG
1 stop10h 40mMultiple Airlines
Deal found 29-11HK$4,034
Tue 2-1207:25HKG - USM
1 stop14h 25mMultiple Airlines
Tue 9-1211:40USM - HKG
Nonstop3h 15mMultiple Airlines
Deal found 29-11HK$4,042
Fri 5-1217:05HKG - USM
Nonstop3h 30mBangkok Airways
Tue 9-1211:40USM - HKG
Nonstop3h 15mBangkok Airways
Deal found 1-12HK$4,081
Tue 2-1217:05HKG - USM
Nonstop3h 30mBangkok Airways
Sat 6-1211:40USM - HKG
Nonstop3h 15mBangkok Airways
Deal found 1-12HK$4,096

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 1 December 2025.

Return from

HK$3,691

One-way from

HK$1,347

Popular in

February

Cheapest in

September

Average price

HK$4,906

Good round-trip deal

HK$3,823 or less
Bangkok Airways
  • Bangkok Airways
  • 18-1-31-1
  • 1 total stop
  • 19h 50m total
  • Hong Kong to Ko Samui
Search Deals
4-3
  • 4-3
  • 1 total stop
  • 15h 15m total
  • Hong Kong to Ko Samui
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (HK$422 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (HK$86 potential savings vs. average return price).
Search Deals
Average for return flights in December 2025
Search Deals
Price to beat on a round-trip flight from Hong Kong Intl to Ko Samui.
Search Deals

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 1 December 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

Thu 15-1

17:05-19:35

Nonstop3h 30m

Ko Samui

Thu 22-1

11:40-15:55

Nonstop3h 15m

HK$3,738

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Thu 15-1

14:20-20:30

1 stop7h 10m

Ko Samui

Thu 22-1

08:55-04:35

2 stops18h 40m

HK$3,769

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Mon 11-5

16:15-18:35

Nonstop3h 20m

Ko Samui

Thu 14-5

10:55-15:15

Nonstop3h 20m

HK$3,933

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Sun 17-5

16:15-18:35

Nonstop3h 20m

Ko Samui

Wed 20-5

10:55-15:15

Nonstop3h 20m

HK$3,933

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Sun 17-5

21:30-11:40

1 stop15h 10m

Ko Samui

Wed 20-5

08:45-18:05

1 stop8h 20m

HK$3,948

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Sun 17-5

21:30-11:40

1 stop15h 10m

Ko Samui

Thu 21-5

08:45-18:05

1 stop8h 20m

HK$3,948

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Mon 18-5

21:30-11:40

1 stop15h 10m

Ko Samui

Thu 21-5

08:45-18:05

1 stop8h 20m

HK$3,948

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Mon 11-5

21:30-11:40

1 stop15h 10m

Ko Samui

Thu 14-5

08:45-18:05

1 stop8h 20m

HK$3,948

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Fri 9-1

22:10-11:35

1 stop14h 25m

Ko Samui

Thu 15-1

11:40-15:55

Nonstop3h 15m

HK$4,019

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Sat 14-3

17:05-19:35

Nonstop3h 30m

Ko Samui

Wed 25-3

11:40-15:55

Nonstop3h 15m

HK$4,112

Flights are sorted by cheapest return flights first.

Deals found on 29-11

Showing 1-10 of 23 results
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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 28 November 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 1 December 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.
Bangkok Airways
8.0
Very Good
118 reviews
Check prices

Entertainment

6.3

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.0

Crew

8.5

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
118 reviews
Bangkok Airways
8.0
Very Good
118 reviews
Check prices

Entertainment

6.3

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.0

Crew

8.5

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
1,080 reviews
Bangkok Airways
8.0
Very Good
118 reviews
Check prices

Entertainment

6.3

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.0

Crew

8.5

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 8 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$709, while return flights cost around HK$1,089.

  • How much is a return flight to Ko Samui?

    A return flight to Ko Samui will typically cost around HK$2,502, however they can be found for as little as HK$1,089.

  • 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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Yes, we can. To see specific flights to Ko Samui with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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