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Cheap flights from the United Kingdom to Ko Samui from £277

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 25/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — USM
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 7 November 2025.

Sun 7/1206:20BHX - USM
3 stops42h 40mMultiple Airlines
Wed 17/1208:55USM - BHX
3 stops41h 45mMultiple Airlines
Deal found 5/11£614
Thu 6/1106:00LGW - USM
3 stops32h 00mMultiple Airlines
Thu 13/1108:15USM - LGW
3 stops46h 40mMultiple Airlines
Deal found 5/11£708
Tue 18/1110:30LGW - USM
2 stops38h 15mMultiple Airlines
Wed 3/1219:00USM - LGW
2 stops42h 30mMultiple Airlines
Deal found 5/11£709
Thu 4/1218:40LHR - USM
2 stops19h 25mMultiple Airlines
Tue 16/1212:00USM - LHR
2 stops27h 05mMultiple Airlines
Deal found 5/11£710
Wed 3/1210:30LGW - USM
2 stops27h 50mMultiple Airlines
Wed 10/1207:15USM - LGW
2 stops30h 15mMultiple Airlines
Deal found 5/11£710
Thu 6/1106:15LTN - USM
3 stops31h 45mMultiple Airlines
Thu 13/1108:15USM - LTN
3 stops45h 55mMultiple Airlines
Deal found 5/11£710
Thu 20/1114:45LHR - USM
2 stops39h 20mAir France
Thu 27/1108:30USM - LHR
2 stops19h 55mAir France
Deal found 6/11£711
Wed 12/1110:30LGW - USM
2 stops26h 55mMultiple Airlines
Sat 22/1107:55USM - LGW
2 stops29h 35mMultiple Airlines
Deal found 7/11£713
Tue 11/1110:30LGW - USM
2 stops26h 55mMultiple Airlines
Sat 22/1107:55USM - LGW
2 stops29h 35mMultiple Airlines
Deal found 7/11£713
Fri 21/1116:40LHR - USM
2 stops21h 25mMultiple Airlines
Mon 1/1209:20USM - LHR
2 stops19h 20mMultiple Airlines
Deal found 6/11£713
Fri 21/1109:20LCY - USM
2 stops26h 05mMultiple Airlines
Mon 1/1209:20USM - LCY
2 stops40h 20mMultiple Airlines
Deal found 7/11£715
Thu 20/1121:50LHR - USM
2 stops37h 25mMultiple Airlines
Thu 27/1113:25USM - LHR
2 stops24h 10mMultiple Airlines
Deal found 5/11£716

Cheap 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 7 November 2025.

Round-trip from

£614

One-way from

£277

Popular in

December

Cheapest in

May

Average price

£824
7/12-17/12
  • 7/12-17/12
  • 6 total stops
  • 84h 25m total
  • United Kingdom to Ko Samui
Search Deals
25/1
  • 25/1
  • 2 total stops
  • 30h 45m total
  • United Kingdom to Ko Samui
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£35 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 7 November 2025.
Use the filters below to find and compare flights from the United Kingdom to Ko Samui that are best for you.

Fly from

United Kingdom

Fly to

Ko Samui

Route

Depart

Return

Price

BirminghamKo Samui

BHX - USM

BHXUSM

Birmingham

Sun 25/1

06:20-08:00

3 stops42h 40m

Ko Samui

Thu 5/2

08:55-23:05

3 stops45h 10m

£690

LondonKo Samui

STN - USM

STNUSM

London Stansted

Fri 16/1

06:10-18:55

3 stops29h 45m

Ko Samui

Fri 30/1

08:55-13:10

2 stops35h 15m

£710

LondonKo Samui

LTN - USM

LTNUSM

London Luton

Wed 21/1

19:30-08:00

2 stops29h 30m

Ko Samui

Sat 31/1

18:15-23:15

3 stops36h 00m

£710

LondonKo Samui

STN - USM

STNUSM

London Stansted

Sat 21/3

06:55-21:20

2 stops31h 25m

Ko Samui

Sat 4/4

08:45-23:20

3 stops44h 35m

£713

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Tue 11/11

10:30-20:25

2 stops26h 55m

Ko Samui

Sat 22/11

07:55-06:30

2 stops29h 35m

£713

LondonKo Samui

LCY - USM

LCYUSM

London City

Fri 13/3

19:20-21:05

2 stops18h 45m

Ko Samui

Fri 19/6

09:15-08:50

2 stops29h 35m

£716

LondonKo Samui

LCY - USM

LCYUSM

London City

Fri 1/5

19:20-13:45

2 stops36h 25m

Ko Samui

Wed 13/5

10:05-18:45

2 stops38h 40m

£751

LondonKo Samui

LCY - USM

LCYUSM

London City

Tue 28/4

19:20-21:10

2 stops19h 50m

Ko Samui

Tue 12/5

10:05-18:45

2 stops38h 40m

£759

LondonKo Samui

LCY - USM

LCYUSM

London City

Tue 17/3

13:30-15:35

2 stops19h 05m

Ko Samui

Thu 26/3

10:00-08:45

2 stops29h 45m

£766

ManchesterKo Samui

MAN - USM

MANUSM

Manchester

Tue 14/4

14:40-07:20

2 stops34h 40m

Ko Samui

Mon 27/4

19:30-13:15

2 stops23h 45m

£801

Flights are sorted by cheapest return flights first.

Deals found on 6/11

Showing 1-10 of 60 results
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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, December is the cheapest month in which you can book a flight from United Kingdom to Ko Samui (average of £332). Flying from United Kingdom to Ko Samui in February is currently the most expensive (average of £722). 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.

What is the cheapest time of day to fly from GB to USM?

Find hourly flight availability from United Kingdom to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 November 2025.

It’s typically best to fly out from United Kingdom to Ko Samui in the afternoon. Doing so could potentially save you 10% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from United Kingdom to Ko Samui?

Use this chart to determine the cheapest time to fly return from United Kingdom to Ko Samui. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their United Kingdom to Ko Samui flight should consider departing on Wednesday at midday when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 7 November 2025.
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
8.4
Very Good
1,272 reviews
Check prices

Crew

8.6

Food

8.1

Overall

8.4

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very Good
1,272 reviews
EVA Air
8.4
Very Good
1,272 reviews
Check prices

Crew

8.6

Food

8.1

Overall

8.4

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Singapore Airlines
8.1
Very Good
1,393 reviews
EVA Air
8.4
Very Good
1,272 reviews
Check prices

Crew

8.6

Food

8.1

Overall

8.4

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Thai Airways
7.8
Good
361 reviews
EVA Air
8.4
Very Good
1,272 reviews
Check prices

Crew

8.6

Food

8.1

Overall

8.4

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Qatar Airways
7.4
Good
3,661 reviews
EVA Air
8.4
Very Good
1,272 reviews
Check prices

Crew

8.6

Food

8.1

Overall

8.4

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
British Airways
6.7
Okay
7,500 reviews
EVA Air
8.4
Very Good
1,272 reviews
Check prices

Crew

8.6

Food

8.1

Overall

8.4

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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 18h 15m. United Kingdom and Ko Samui are separated by a distance of 6185 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?

    £394 is the cheapest one-way deal found within the past few days, from Etihad Airways. You may also be able to find cheap deals on Lufthansa and SWISS, with prices starting from £516 and £532, 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 Stansted - 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, December is the cheapest month in which you can book a flight from United Kingdom to Ko Samui (average of £332). Flying from United Kingdom to Ko Samui in February is currently the most expensive (average of £722). 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

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Alternative routes for United Kingdom to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
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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 7 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£117Average£146FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Air IndiaCheapest£421Average£504FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
LufthansaCheapest£570Average£847FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Austrian AirlinesCheapest£615Average£716FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
SWISSCheapest£623Average£729FlexibilityNo cancel feeOn-time79%
Search SWISS flights
KLMCheapest£650Average£958FlexibilityNo cancel feeOn-time75%
Search KLM flights
Etihad AirwaysCheapest£662Average£852FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Air FranceCheapest£673Average£1,002FlexibilityNo cancel feeOn-time77%
Search Air France flights
Turkish AirlinesCheapest£745Average£859FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
EVA AirCheapest£746Average£853FlexibilityNo 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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