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Cheap flights from the United Kingdom to Ko Samui from £342

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.
LHR — USM
13 Jul — 20 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Ko Samui

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Ko Samui
Explore the most affordable flight options available from United Kingdom to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2026.

Tue 1/920:45
MAN
-
USM
2 stops35h 55m
Multiple Airlines
Mon 14/911:25
USM
-
MAN
2 stops37h 20m
Multiple Airlines
Deal found 10/6£696
Tue 3/1118:45
MAN
-
USM
2 stops19h 20m
SWISS
Fri 13/1110:00
USM
-
MAN
2 stops29h 20m
SWISS
Deal found 12/6£698
Tue 22/914:00
MAN
-
USM
2 stops17h 45m
SWISS
Wed 7/1008:45
USM
-
MAN
2 stops29h 30m
SWISS
Deal found 12/6£702
Wed 2/914:05
MAN
-
USM
2 stops17h 40m
SWISS
Wed 16/909:15
USM
-
MAN
2 stops29h 00m
SWISS
Deal found 10/6£711
Fri 20/1118:50
BHX
-
USM
2 stops19h 15m
Multiple Airlines
Mon 30/1116:25
USM
-
BHX
2 stops27h 10m
Multiple Airlines
Deal found 11/6£716
Fri 4/906:55
MAN
-
USM
2 stops27h 40m
Multiple Airlines
Fri 18/909:15
USM
-
MAN
2 stops28h 55m
Multiple Airlines
Deal found 13/6£721
Thu 3/909:00
MAN
-
USM
2 stops22h 45m
SWISS
Wed 16/908:45
USM
-
MAN
2 stops34h 35m
SWISS
Deal found 10/6£723
Fri 4/914:05
MAN
-
USM
2 stops17h 40m
SWISS
Thu 17/908:45
USM
-
MAN
2 stops34h 35m
SWISS
Deal found 13/6£724
Mon 31/807:00
MAN
-
USM
2 stops27h 50m
Multiple Airlines
Thu 8/1008:45
USM
-
MAN
2 stops34h 35m
Multiple Airlines
Deal found 10/6£729
Fri 20/1117:45
BHX
-
USM
2 stops20h 20m
Lufthansa
Mon 30/1113:25
USM
-
BHX
2 stops34h 45m
Lufthansa
Deal found 10/6£729
Sat 5/914:05
MAN
-
USM
2 stops17h 40m
SWISS
Sat 19/909:15
USM
-
MAN
2 stops28h 55m
SWISS
Deal found 9/6£729
Fri 28/818:35
BHX
-
USM
2 stops37h 10m
SWISS
Sun 13/908:45
USM
-
BHX
2 stops29h 20m
SWISS
Deal found 13/6£743

Find flight deals from United Kingdom to Ko Samui

Keep the following information in mind while searching for United Kingdom to Ko Samui flight deals. Data was last updated 13 June 2026.

Round-trip from

£696

One-way from

£342

Popular in

December

Cheapest in

November

Average price

£822
1/9-14/9
  • 1/9-14/9
  • 4 total stops
  • 73h 15m total
  • United Kingdom to Ko Samui
Search Deals
22/9
  • 22/9
  • 2 total stops
  • 36h 35m total
  • United Kingdom to Ko Samui
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£65 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£29 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to Ko Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 June 2026.
Use the filters below to find and compare flights from the United Kingdom to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BirminghamKo Samui

BHX - USM

BHXUSM

Birmingham

Fri 20/11

18:50-21:05

2 stops19h 15m

Ko Samui

Mon 30/11

16:25-12:35

2 stops27h 10m

£716

ManchesterKo Samui

MAN - USM

MANUSM

Manchester

Thu 3/9

09:00-13:45

2 stops22h 45m

Ko Samui

Wed 16/9

08:45-13:20

2 stops34h 35m

£723

BirminghamKo Samui

BHX - USM

BHXUSM

Birmingham

Fri 20/11

17:45-21:05

2 stops20h 20m

Ko Samui

Mon 30/11

13:25-17:10

2 stops34h 45m

£729

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Sun 13/9

10:40-16:30

2 stops23h 50m

Ko Samui

Thu 17/9

14:00-06:55

2 stops22h 55m

£780

ManchesterKo Samui

MAN - USM

MANUSM

Manchester

Mon 31/8

17:55-16:50

2 stops16h 55m

Ko Samui

Thu 8/10

09:15-13:20

2 stops34h 05m

£787

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Tue 1/9

18:35-21:10

2 stops20h 35m

Ko Samui

Wed 30/9

09:15-08:25

2 stops29h 10m

£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
Fastest return journey

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Sat 29/8

22:15-20:30

1 stop16h 15m

Ko Samui

Wed 16/9

19:15-05:55

1 stop16h 40m

£805

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

Thu 12/11

18:45-21:05

1 stop19h 20m

Ko Samui

Mon 16/11

16:25-05:45

1 stop20h 20m

£852

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
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6

Best time to book a flight from United Kingdom to Ko Samui

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

What is the cheapest month to book a flight from United Kingdom to Ko Samui?

Currently, October is the cheapest month in which you can book a flight from United Kingdom to Ko Samui (average of £112). Flying from United Kingdom to Ko Samui in August is currently the most expensive (average of £1,611). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How often are flights from the United Kingdom to Ko Samui delayed?

About 11% of weekly flights between United Kingdom and Ko Samui have experienced delays in the past year, with the average delay time being 153 minutes.

What is the most punctual flight time for the United Kingdom to Ko Samui flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United Kingdom to Ko Samui flights?

Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 5% of flights being delayed.

How far ahead should I book a flight from United Kingdom to Ko Samui?

To ensure you get the cheapest price possible for a flight from United Kingdom to Ko Samui, you should look to book at least 88 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.
Check out reviews from past customers who have flown with EVA Air,Singapore Airlines, andThai Airways from the United Kingdom to Ko Samui to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.5
Very Good
1,474 reviews
Check prices

Entertainment

8.0

Food

8.1

Boarding

8.4

Overall

8.5

Comfort

8.3

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
EVA Air
8.5
Very Good
1,474 reviews
EVA Air
8.5
Very Good
1,474 reviews
Check prices

Entertainment

8.0

Food

8.1

Boarding

8.4

Overall

8.5

Comfort

8.3

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
Singapore Airlines
8.2
Very Good
1,545 reviews
EVA Air
8.5
Very Good
1,474 reviews
Check prices

Entertainment

8.0

Food

8.1

Boarding

8.4

Overall

8.5

Comfort

8.3

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
Thai Airways
7.9
Good
406 reviews
EVA Air
8.5
Very Good
1,474 reviews
Check prices

Entertainment

8.0

Food

8.1

Boarding

8.4

Overall

8.5

Comfort

8.3

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
Qatar Airways
7.3
Good
3,726 reviews
EVA Air
8.5
Very Good
1,474 reviews
Check prices

Entertainment

8.0

Food

8.1

Boarding

8.4

Overall

8.5

Comfort

8.3

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
British Airways
6.7
Okay
8,047 reviews
EVA Air
8.5
Very Good
1,474 reviews
Check prices

Entertainment

8.0

Food

8.1

Boarding

8.4

Overall

8.5

Comfort

8.3

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Ko Samui (USM), located 2.1 mi from the city center, is the airport you fly into when you book flights from United Kingdom to Ko Samui.

  • How long is the flight from United Kingdom to Ko Samui?

    Departing from United Kingdom to Ko Samui will take you 20h 20m. United Kingdom and Ko Samui are separated by a distance of 6180 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from United Kingdom to Ko Samui one-way?

    £254 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on Qatar Airways and Etihad Airways, with prices starting from £440 and £445, respectively.

  • What are the most popular routes from United Kingdom to Ko Samui?

    Most travelers choose London Heathrow - Ko Samui, London Gatwick - Ko Samui or London City - Ko Samui when deciding on the best route from United Kingdom to Ko Samui.

  • Can I find deals for flights from United Kingdom to Ko Samui that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Ko Samui flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Ko Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Ko Samui.

  • Can I find deals for business class flights from United Kingdom to Ko Samui?

    Yes. Cheapflights offers flight deals from United Kingdom to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from United Kingdom to Ko Samui?

    Currently, October is the cheapest month in which you can book a flight from United Kingdom to Ko Samui (average of £112). Flying from United Kingdom to Ko Samui in August is currently the most expensive (average of £1,611). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

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.

Alternative routes for United Kingdom to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Suvarnabhumi flights
Gatwick to Suvarnabhumi flights
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Luton to Suvarnabhumi flights
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Gatwick to Phuket City flights
Birmingham to Suvarnabhumi flights
Stansted to Phuket City flights
London City to Phuket City flights
Newcastle upon Tyne to Suvarnabhumi flights
Edinburgh to Don Mueang Intl flights
Birmingham to Don Mueang Intl flights
Glasgow Intl to Suvarnabhumi flights
Heathrow to Ko Samui flights
Manchester to Phuket City flights
Southend to Suvarnabhumi flights
Gatwick to Ko Samui flights
London City to Ko Samui flights
Newcastle upon Tyne to Don Mueang Intl flights
Southampton to Suvarnabhumi flights
Luton to Phuket City flights
Aberdeen to Suvarnabhumi flights
Heathrow to Krabi flights
Heathrow to Chiang Mai flights
Stansted to Ko Samui flights
Gatwick to Chiang Mai flights
Gatwick to Krabi flights
Stansted to Krabi flights
London City to Chiang Mai flights
Stansted to Chiang Mai flights
Frankfurt to Suvarnabhumi flights
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Bristol to Suvarnabhumi flights
Glasgow Intl to Don Mueang Intl flights
Norwich to Suvarnabhumi flights
Grimsby to Suvarnabhumi flights
Leeds to Suvarnabhumi flights
London City to Krabi flights
Manchester to Ko Samui flights
Amsterdam to Suvarnabhumi flights
Edinburgh to Phuket City flights
Liverpool to Suvarnabhumi flights

Top 10 airlines flying from United Kingdom to Ko Samui

Discover the top 10 airlines that operate flights from United Kingdom to Ko Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£114Average£142FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Oman AirCheapest£462Average£854FlexibilityNo cancel feeOn-time76%
Search Oman Air flights
Austrian AirlinesCheapest£591Average£688FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
LufthansaCheapest£602Average£725FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
SWISSCheapest£606Average£756FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Air FranceCheapest£611Average£1,392FlexibilityNo cancel feeOn-time77%
Search Air France flights
Etihad AirwaysCheapest£612Average£814FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
KLMCheapest£635Average£981FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£718Average£1,095FlexibilityNo cancel feeOn-time70%
Search British Airways flights
EVA AirCheapest£718Average£841FlexibilityNo cancel feeOn-time74%
Search EVA Air flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from United Kingdom to Ko Samui?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from United Kingdom to Ko Samui. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

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

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

Need flexible booking options for your flight to Ko Samui from United Kingdom? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from United Kingdom to Ko Samui become cheaper?

Yes, Cheapflights offers price alerts on United Kingdom to Ko Samui flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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