Find flights
Deals
When to book
Airlines

HK$1,977+ 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 21-9. Fares are subject to change and may not be available on all flights or dates of travel.
— USM
13 Oct — 20 Oct1
1 adult
1 adult, Economy

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 13 September 2025.

Thu 9-1016:15HKG - USM
Nonstop3h 20mBangkok Airways
Thu 16-1010:55USM - HKG
Nonstop3h 20mBangkok Airways
Deal found 11-9HK$3,455
Wed 29-1017:05HKG - USM
Nonstop3h 30mBangkok Airways
Tue 4-1111:40USM - HKG
Nonstop3h 15mBangkok Airways
Deal found 12-9HK$3,471
Fri 10-1016:15HKG - USM
Nonstop3h 20mBangkok Airways
Fri 17-1010:55USM - HKG
Nonstop3h 20mBangkok Airways
Deal found 12-9HK$3,494
Thu 20-1117:05HKG - USM
Nonstop3h 30mBangkok Airways
Sun 23-1111:40USM - HKG
Nonstop3h 15mBangkok Airways
Deal found 11-9HK$3,517
Thu 16-1016:15HKG - USM
Nonstop3h 20mBangkok Airways
Sat 25-1010:55USM - HKG
Nonstop3h 20mBangkok Airways
Deal found 10-9HK$3,556
Sat 18-1016:15HKG - USM
Nonstop3h 20mBangkok Airways
Mon 20-1010:55USM - HKG
Nonstop3h 20mBangkok Airways
Deal found 12-9HK$3,564
Mon 2-317:05HKG - USM
Nonstop3h 30mBangkok Airways
Mon 16-311:40USM - HKG
Nonstop3h 15mBangkok Airways
Deal found 11-9HK$3,572
Mon 27-1017:05HKG - USM
Nonstop3h 30mBangkok Airways
Mon 3-1111:40USM - HKG
Nonstop3h 15mBangkok Airways
Deal found 12-9HK$3,735
Thu 9-1016:15HKG - USM
Nonstop3h 20mMultiple Airlines
Thu 16-1010:55USM - HKG
Nonstop3h 20mMultiple Airlines
Deal found 11-9HK$4,140
Mon 27-1017:05HKG - USM
Nonstop3h 30mMultiple Airlines
Mon 3-1111:40USM - HKG
Nonstop3h 15mMultiple Airlines
Deal found 12-9HK$4,171
Fri 5-1217:05HKG - USM
Nonstop3h 30mBangkok Airways
Tue 9-1211:40USM - HKG
Nonstop3h 15mBangkok Airways
Deal found 11-9HK$4,428

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 13 September 2025.
Use the filters below to find and compare direct 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 9-10

16:15-18:35

Nonstop3h 20m

Ko Samui

Thu 16-10

10:55-15:15

Nonstop3h 20m

HK$3,455

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$3,494

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Fri 10-10

16:15-18:35

Nonstop3h 20m

Ko Samui

Fri 17-10

10:55-15:15

Nonstop3h 20m

HK$3,494

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Thu 16-10

16:15-18:35

Nonstop3h 20m

Ko Samui

Sat 25-10

10:55-15:15

Nonstop3h 20m

HK$3,556

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Tue 13-1

17:05-19:35

Nonstop3h 30m

Ko Samui

Tue 10-3

11:40-15:55

Nonstop3h 15m

HK$3,564

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Tue 28-10

17:05-19:35

Nonstop3h 30m

Ko Samui

Tue 4-11

11:40-15:55

Nonstop3h 15m

HK$3,665

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Mon 27-10

17:05-19:35

Nonstop3h 30m

Ko Samui

Mon 3-11

11:40-15:55

Nonstop3h 15m

HK$3,735

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Mon 27-10

17:05-19:35

Nonstop3h 30m

Ko Samui

Thu 30-10

11:40-15:55

Nonstop3h 15m

HK$3,829

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Thu 30-10

17:05-19:35

Nonstop3h 30m

Ko Samui

Sun 2-11

11:40-15:55

Nonstop3h 15m

HK$3,922

Hong KongKo Samui

HKG - USM

HKGUSM

Hong Kong Intl

Thu 30-10

17:05-19:35

Nonstop3h 30m

Ko Samui

Thu 6-11

11:40-15:55

Nonstop3h 15m

HK$4,078

Flights are sorted by cheapest return flights first.

Deals found on 12-9

Showing 1-10 of 17 results
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 13 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.
Bangkok Airways
8.0
Very Good
113 reviews
Check prices

Overall

8.0

Crew

8.5

Entertainment

6.2

Boarding

8.0

Food

7.2

Comfort

7.9

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
113 reviews
Bangkok Airways
8.0
Very Good
113 reviews
Check prices

Overall

8.0

Crew

8.5

Entertainment

6.2

Boarding

8.0

Food

7.2

Comfort

7.9

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
993 reviews
Bangkok Airways
8.0
Very Good
113 reviews
Check prices

Overall

8.0

Crew

8.5

Entertainment

6.2

Boarding

8.0

Food

7.2

Comfort

7.9

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.

Temperature and rainfall in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average temperature and rainfall totals by month.

USM

Temperature

27 - 29 °C

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

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.

  • 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, May is worth consideration, as prices are usually at their lowest, on average. November 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$3,834.

See more FAQs

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.

Direct flights to Thailand

Book a non-stop flight to one of these popular destinations located in Thailand.
Direct flights to Bangkok
Direct flights to Phuket City
Direct flights to Chiang Mai

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.