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£341+ 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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
— USM
13 Jul — 20 Jul1
1 adult
1 adult, Economy, 0 bags

Flights to Ko Samui in 2026

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 13 June 2026.

Thu 2/710:00
LHR
-
USM
2 stops24h 30m
Multiple Airlines
Sun 12/714:00
USM
-
LHR
2 stops22h 55m
Multiple Airlines
Deal found 10/6£774
Fri 20/1117:45
LCY
-
USM
2 stops20h 20m
SWISS
Mon 23/1116:25
USM
-
LCY
2 stops23h 15m
SWISS
Deal found 11/6£775
Sun 21/610:00
LHR
-
USM
2 stops20h 45m
Multiple Airlines
Tue 30/615:25
USM
-
LHR
2 stops21h 30m
Multiple Airlines
Deal found 12/6£775
Tue 13/1022:15
LGW
-
USM
1 stop16h 15m
British Airways
Tue 27/1019:10
USM
-
LGW
1 stop17h 15m
British Airways
Deal found 9/6£778
Fri 11/913:10
LCY
-
USM
2 stops18h 35m
SWISS
Fri 25/909:15
USM
-
LCY
2 stops29h 10m
SWISS
Deal found 9/6£778
Sat 27/609:00
LGW
-
USM
2 stops43h 30m
Qatar Airways
Sat 11/715:25
USM
-
LGW
2 stops45h 15m
Qatar Airways
Deal found 9/6£778
Tue 13/1013:10
LCY
-
USM
2 stops17h 35m
SWISS
Tue 27/1016:25
USM
-
LCY
2 stops27h 25m
SWISS
Deal found 9/6£779
Thu 2/710:00
LHR
-
USM
2 stops22h 45m
Multiple Airlines
Fri 10/715:25
USM
-
LHR
2 stops21h 05m
Multiple Airlines
Deal found 11/6£779
Tue 1/922:15
LGW
-
USM
1 stop16h 15m
British Airways
Sun 13/919:15
USM
-
LGW
1 stop16h 40m
British Airways
Deal found 13/6£780
Thu 3/1216:30
LHR
-
USM
2 stops21h 35m
Multiple Airlines
Fri 18/1210:00
USM
-
LHR
2 stops18h 40m
Multiple Airlines
Deal found 12/6£781
Fri 28/818:35
LGW
-
USM
2 stops20h 35m
SWISS
Sat 12/908:45
USM
-
LGW
2 stops29h 35m
SWISS
Deal found 13/6£784
Sat 13/615:05
LHR
-
USM
2 stops19h 50m
Qatar Airways
Sat 20/615:25
USM
-
LHR
2 stops22h 05m
Qatar Airways
Deal found 10/6£785

Find flight deals to Ko Samui

Find the latest flights to Ko Samui in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 13 June 2026.

Return from

£774

One-way from

£341

Popular in

December

Cheapest in

November

Average price

£822
2/7-12/7
  • 2/7-12/7
  • 4 total stops
  • 47h 25m total
  • London to Ko Samui
Search Deals
22/9
  • 22/9
  • 2 total stops
  • 36h 35m total
  • London to Ko Samui
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£87 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£38 potential savings vs. average return price).
Search Deals
Average for return flights in June 2026
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 858,174 searches and data was last updated on 13 June 2026.
Use the filters below to find and compare flights to Ko Samui that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Tue 1/9

22:15-20:30

1 stop16h 15m

Ko Samui

Sun 13/9

19:15-05:55

1 stop16h 40m

£780

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Thu 29/10

08:40-10:40

2 stops19h 00m

Ko Samui

Mon 16/11

09:20-05:55

2 stops27h 35m

£798

LondonKo Samui

LCY - USM

LCYUSM

London City

Tue 1/9

13:10-13:45

2 stops18h 35m

Ko Samui

Wed 30/9

09:15-08:40

2 stops29h 25m

£805

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Tue 1/9

22:15-20:30

1 stop16h 15m

Ko Samui

Wed 30/9

19:15-05:55

1 stop16h 40m

£806

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Sat 21/11

12:00-07:10

1 stop36h 10m

Ko Samui

Mon 23/11

09:20-18:45

1 stop16h 25m

£813

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 7/9

14:45-14:45

2 stops18h 00m

Ko Samui

Wed 23/9

20:35-12:45

2 stops22h 10m

£820

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Fri 30/10

09:00-10:40

2 stops18h 40m

Ko Samui

Tue 17/11

15:35-05:55

2 stops21h 20m

£824

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Thu 12/11

08:40-10:40

2 stops19h 00m

Ko Samui

Mon 16/11

13:45-05:55

2 stops23h 10m

£840

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 12/11

18:45-21:05

1 stop19h 20m

Ko Samui

Mon 16/11

16:25-05:45

1 stop20h 20m

£851

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Sat 26/9

18:35-21:10

2 stops20h 35m

Ko Samui

Sat 10/10

08:45-08:20

2 stops29h 35m

£855

Flights are sorted by cheapest return flights first.

Deals found on 13/6

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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

How long is the flight to Ko Samui?

On average, a flight from London to Ko Samui takes 18 hours 54 minutes. Flights to Ko Samui from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to Ko Samui?

The most popular airlines flying from London to Ko Samui are Thai Airways, EVA Air and Singapore Airlines.

Thai Airways
Thai Airways
From £762
EVA Air
EVA Air
From £704
Singapore Airlines
Singapore Airlines
From £744
Qatar Airways
Qatar Airways
From £754

What are the cheapest airlines that fly to Ko Samui?

The cheapest airlines flying from London to Ko Samui are Bangkok Airways, Oman Air and Austrian Airlines.

Rainfall in Ko Samui by month

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

In terms of precipitation, rainfall in Ko Samui ranges from 58.0 - 490.0 inches per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Ko Samui when rainfall is around 58.0 mm.

Temperature in Ko Samui by month

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

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).

When is the best time to book a flight to Ko Samui?

To ensure you get the cheapest price possible for a flight to Ko Samui, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 13 June 2026.
See what other customers who have flown with EVA Air,Singapore Airlines, andThai Airways to Thailand have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.5
Very Good
1,474 reviews
Check prices

Overall

8.5

Crew

8.7

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
EVA Air
8.5
Very Good
1,474 reviews
EVA Air
8.5
Very Good
1,474 reviews
Check prices

Overall

8.5

Crew

8.7

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
Singapore Airlines
8.2
Very Good
1,545 reviews
EVA Air
8.5
Very Good
1,474 reviews
Check prices

Overall

8.5

Crew

8.7

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
Thai Airways
7.9
Good
406 reviews
EVA Air
8.5
Very Good
1,474 reviews
Check prices

Overall

8.5

Crew

8.7

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
Qatar Airways
7.3
Good
3,726 reviews
EVA Air
8.5
Very Good
1,474 reviews
Check prices

Overall

8.5

Crew

8.7

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
British Airways
6.7
Okay
8,047 reviews
EVA Air
8.5
Very Good
1,474 reviews
Check prices

Overall

8.5

Crew

8.7

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!

FAQs about flying to Ko Samui

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

    Booking a flight to Ko Samui (USM) is your only option if you intend on flying to Ko Samui. It is only a 2.1 mi journey from Ko Samui to Ko Samui’s city center.

  • 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 £59, while return flights cost around £104.

  • How much is a return flight to Ko Samui?

    A return flight to Ko Samui will typically cost around £158, however they can be found for as little as £104.

  • Where does the fastest flight to Ko Samui depart from?

    For those looking to save time traveling to Ko Samui, London offers the quickest one-way flight (16 hours 5 minutes).

  • Does Ko Samui have car hire?

    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 mi 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 Pha Ngan
Ko Tao
Khanom

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Fly with Cheapflights

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How does Cheapflights help users find flights to Ko Samui?

Deals for Ko Samui flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets to Ko Samui?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights to Ko Samui for you. Better yet — we are completely free to use.

Can Cheapflights find flights to Ko Samui with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights to Ko Samui, users can toggle the no change fees filter when performing a flight search.

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