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HK$2,475+ Direct flights to Ko Samui

This is the cheapest price on a non-stop flight to Ko Samui found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16-9. Fares are subject to change and may not be available on all flights or dates of travel.
— USM
20 May — 27 May1
1 adult
1 adult, Economy, 0 bags

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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 20 April 2026.

Mon 4-517:20
HKG
-
USM
Nonstop3h 20m
Bangkok Airways
Sun 10-511:55
USM
-
HKG
Nonstop3h 25m
Bangkok Airways
Deal found 19-4HK$4,362
Mon 4-517:20
HKG
-
USM
Nonstop3h 20m
Bangkok Airways
Mon 11-511:55
USM
-
HKG
Nonstop3h 25m
Bangkok Airways
Deal found 19-4HK$4,409
Sun 10-517:20
HKG
-
USM
Nonstop3h 20m
Bangkok Airways
Sun 17-511:55
USM
-
HKG
Nonstop3h 25m
Bangkok Airways
Deal found 18-4HK$4,440
Fri 12-617:20
HKG
-
USM
Nonstop3h 20m
Bangkok Airways
Mon 15-611:55
USM
-
HKG
Nonstop3h 25m
Bangkok Airways
Deal found 16-4HK$4,464
Tue 2-617:20
HKG
-
USM
Nonstop3h 20m
Bangkok Airways
Tue 9-611:55
USM
-
HKG
Nonstop3h 25m
Bangkok Airways
Deal found 18-4HK$4,479
Fri 28-817:20
HKG
-
USM
Nonstop3h 20m
Bangkok Airways
Mon 31-811:55
USM
-
HKG
Nonstop3h 25m
Bangkok Airways
Deal found 18-4HK$4,613
Tue 30-617:20
HKG
-
USM
Nonstop3h 20m
Bangkok Airways
Tue 7-711:55
USM
-
HKG
Nonstop3h 25m
Bangkok Airways
Deal found 19-4HK$4,652
Tue 26-517:20
HKG
-
USM
Nonstop3h 20m
Bangkok Airways
Sat 20-611:55
USM
-
HKG
Nonstop3h 25m
Bangkok Airways
Deal found 15-4HK$4,683
Tue 19-517:20
HKG
-
USM
Nonstop3h 20m
Bangkok Airways
Fri 22-511:55
USM
-
HKG
Nonstop3h 25m
Bangkok Airways
Deal found 19-4HK$4,699

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 Fare Finder

 
Use the slider to find non-stop flights to Ko Samui within your budget. Price data is based on user searches made on Cheapflights. Over the past seven days, Cheapflights users made 70,647 searches and data was last updated on 20 April 2026.
Use the filters below to find and compare direct flights to Ko Samui that are best for you.

Fly from

Route

Departure

Return

Price

Cheapest return flight
Fastest return journey

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Mon 11-5

17:20-19:40

Nonstop3h 20m

Ko Samui

Sun 17-5

11:55-16:20

Nonstop3h 25m

HK$4,894

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Mon 11-5

17:20-19:40

Nonstop3h 20m

Ko Samui

Mon 18-5

11:55-16:20

Nonstop3h 25m

HK$4,894

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Thu 23-7

17:20-19:40

Nonstop3h 20m

Ko Samui

Tue 28-7

11:55-16:20

Nonstop3h 25m

HK$5,012

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Fri 7-8

17:20-19:40

Nonstop3h 20m

Ko Samui

Mon 17-8

11:55-16:20

Nonstop3h 25m

HK$5,153

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Wed 12-8

17:20-19:40

Nonstop3h 20m

Ko Samui

Fri 21-8

11:55-16:20

Nonstop3h 25m

HK$5,231

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Thu 25-6

17:20-19:40

Nonstop3h 20m

Ko Samui

Sat 27-6

11:55-16:20

Nonstop3h 25m

HK$5,239

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Tue 19-5

17:20-19:40

Nonstop3h 20m

Ko Samui

Sun 7-6

11:55-16:20

Nonstop3h 25m

HK$5,239

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Thu 25-6

17:20-19:40

Nonstop3h 20m

Ko Samui

Fri 26-6

11:55-16:20

Nonstop3h 25m

HK$5,239

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Sun 31-5

17:20-19:40

Nonstop3h 20m

Ko Samui

Thu 4-6

11:55-16:20

Nonstop3h 25m

HK$5,239
Cheapest one-way
Fastest single journey

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Wed 16-9

17:20-19:40

Nonstop3h 20m

HK$2,475

Flights are sorted by cheapest return flights first.

Deals found on 18-4

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Reviews of airlines flying non-stop to Ko Samui

Get insights into the airlines that provide direct flights 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 20 April 2026.
See what other customers who have flown with Bangkok Airways,泰國航空, andCathay 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
8.1
Very Good
128 reviews
Check prices

Boarding

8.1

Crew

8.6

Entertainment

6.3

Food

7.3

Comfort

8.0

Overall

8.1

Reviews

1 / 8
10.0
Excellent

Agata,Feb 2026

USM - DMK

Great short flight and free really good snack and water which I didn’t expect
Bangkok Airways
8.1
Very Good
128 reviews
Bangkok Airways
8.1
Very Good
128 reviews
Check prices

Boarding

8.1

Crew

8.6

Entertainment

6.3

Food

7.3

Comfort

8.0

Overall

8.1

Reviews

1 / 8
10.0
Excellent

Agata,Feb 2026

USM - DMK

Great short flight and free really good snack and water which I didn’t expect
泰國航空
7.9
Good
400 reviews
Bangkok Airways
8.1
Very Good
128 reviews
Check prices

Boarding

8.1

Crew

8.6

Entertainment

6.3

Food

7.3

Comfort

8.0

Overall

8.1

Reviews

1 / 8
10.0
Excellent

Agata,Feb 2026

USM - DMK

Great short flight and free really good snack and water which I didn’t expect
Cathay Pacific
7.6
Good
1,282 reviews
Bangkok Airways
8.1
Very Good
128 reviews
Check prices

Boarding

8.1

Crew

8.6

Entertainment

6.3

Food

7.3

Comfort

8.0

Overall

8.1

Reviews

1 / 8
10.0
Excellent

Agata,Feb 2026

USM - DMK

Great short flight and free really good snack and water which I didn’t expect

FAQ about direct flights to Ko Samui

Find answers to frequently asked questions about direct flights to Ko Samui to unlock the best deals on Cheapflights.

  • How much are direct flights to Ko Samui?

    On average, a one-way direct flight to Ko Samui will cost users approximately HK$5,369. If you're looking for a direct return flight to Ko Samui, you can expect to pay around HK$7,261.

  • Which airlines fly direct to Ko Samui?

    At the moment, Bangkok Airways, Cathay Pacific offer direct flights to Ko Samui. Bangkok Airways is currently the most popular airline that flies direct to Ko Samui.

  • How long is a direct flight to Ko Samui?

    While the flight duration depends heavily on the origin, travellers can expect non-stop flights to Ko Samui to last approximately 3h 20m on average. The quickest direct flight to Ko Samui at this time departs from Hong Kong (3h 20m), while the longest leaves from Hong Kong (3h 20m).

  • What is the best time of year to fly direct to Ko Samui?

    If you're seeking the lowest price on a direct flight to Ko Samui, September is worth consideration, as prices are usually at their lowest, on average. August may be most appealing to users looking for the quietest time to visit Ko Samui, when demand is typically at its lowest.

  • What is the most popular direct flight origin to Ko Samui?

    Currently, the most popular direct flight origin to Ko Samui is Hong Kong. A return direct flight from Hong Kong to Ko Samui typically costs around HK$6,315.

See more FAQs

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