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Cheap flights from the United Kingdom to Ko Samui from £250

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 23/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — USM
13 Dec — 20 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 13 November 2025.

Fri 21/1110:30LGW - USM
2 stops27h 00mMultiple Airlines
Wed 3/1207:55USM - LGW
1 stop17h 35mMultiple Airlines
Deal found 12/11£712
Tue 25/1110:30LGW - USM
2 stops24h 55mMultiple Airlines
Thu 4/1207:55USM - LGW
1 stop17h 25mMultiple Airlines
Deal found 12/11£714
Sat 22/1110:30LGW - USM
2 stops26h 55mMultiple Airlines
Mon 1/1207:55USM - LGW
2 stops29h 35mMultiple Airlines
Deal found 12/11£718
Tue 18/1106:30STN - USM
3 stops30h 45mMultiple Airlines
Fri 28/1118:05USM - STN
2 stops26h 05mMultiple Airlines
Deal found 12/11£718
Thu 4/1213:45LHR - USM
2 stops23h 40mMultiple Airlines
Tue 9/1218:05USM - LHR
2 stops21h 00mMultiple Airlines
Deal found 11/11£718
Mon 24/1110:30LGW - USM
2 stops27h 00mMultiple Airlines
Thu 4/1207:55USM - LGW
1 stop17h 25mMultiple Airlines
Deal found 12/11£719
Tue 18/1120:25LHR - USM
2 stops31h 10mMultiple Airlines
Fri 28/1114:30USM - LHR
2 stops32h 25mMultiple Airlines
Deal found 12/11£719
Thu 20/1108:05LGW - USM
2 stops40h 55mMultiple Airlines
Mon 1/1208:30USM - LGW
1 stop17h 00mMultiple Airlines
Deal found 12/11£720
Wed 19/1110:30LGW - USM
2 stops26h 55mMultiple Airlines
Wed 3/1207:55USM - LGW
1 stop17h 35mMultiple Airlines
Deal found 12/11£721
Sun 16/1106:25LGW - USM
3 stops29h 25mMultiple Airlines
Wed 26/1107:55USM - LGW
1 stop17h 35mMultiple Airlines
Deal found 11/11£722
Sun 30/1109:30LHR - USM
2 stops25h 45mMultiple Airlines
Thu 29/108:15USM - LHR
2 stops37h 30mMultiple Airlines
Deal found 11/11£722
Sat 6/1220:05LHR - USM
2 stops42h 00mMultiple Airlines
Tue 16/1209:00USM - LHR
2 stops19h 40mMultiple Airlines
Deal found 13/11£723

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 13 November 2025.

Round-trip from

£661

One-way from

£250

Popular in

December

Cheapest in

May

Average price

£818
Lufthansa
  • Lufthansa
  • 15/3-30/3
  • 4 total stops
  • 43h 35m total
  • United Kingdom to Ko Samui
Search Deals
23/3
  • 23/3
  • 3 total stops
  • 34h 35m total
  • United Kingdom to Ko Samui
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£30 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£19 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 13 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 15/3

17:45-17:40

2 stops16h 55m

Ko Samui

Mon 30/3

13:30-10:10

2 stops26h 40m

£661

EdinburghKo Samui

EDI - USM

EDIUSM

Edinburgh Turnhouse

Mon 11/5

17:10-17:05

2 stops17h 55m

Ko Samui

Tue 26/5

09:15-07:45

2 stops28h 30m

£671

ManchesterKo Samui

MAN - USM

MANUSM

Manchester

Wed 6/5

17:55-17:05

2 stops17h 10m

Ko Samui

Mon 25/5

09:15-08:05

2 stops28h 50m

£679

EdinburghKo Samui

EDI - USM

EDIUSM

Edinburgh Turnhouse

Sat 10/1

07:00-20:50

3 stops30h 50m

Ko Samui

Sun 25/1

08:55-23:00

3 stops45h 05m

£701

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sun 10/5

21:45-10:10

2 stops30h 25m

Ko Samui

Tue 26/5

20:50-18:45

2 stops27h 55m

£714

BirminghamKo Samui

BHX - USM

BHXUSM

Birmingham

Wed 11/3

17:45-18:40

2 stops17h 55m

Ko Samui

Tue 31/3

13:30-10:10

2 stops26h 40m

£715

LondonKo Samui

LTN - USM

LTNUSM

London Luton

Tue 20/1

06:25-19:45

3 stops30h 20m

Ko Samui

Tue 3/3

12:25-23:10

3 stops41h 45m

£718

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Sat 11/4

20:30-07:50

3 stops29h 20m

Ko Samui

Sun 26/4

09:15-12:35

3 stops33h 20m

£720

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 2/2

20:55-21:20

2 stops17h 25m

Ko Samui

Wed 11/3

19:00-12:05

2 stops24h 05m

£727

EdinburghKo Samui

EDI - USM

EDIUSM

Edinburgh Turnhouse

Sun 10/5

13:20-14:45

2 stops19h 25m

Ko Samui

Mon 25/5

09:15-21:45

2 stops18h 30m

£739

Flights are sorted by cheapest return flights first.

Deals found on 11/11

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 £331). Flying from United Kingdom to Ko Samui in February is currently the most expensive (average of £720). 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 13 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 13 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
1,276 reviews
Check prices

Comfort

8.3

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

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
1,276 reviews
EVA Air
8.4
Very Good
1,276 reviews
Check prices

Comfort

8.3

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

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
1,401 reviews
EVA Air
8.4
Very Good
1,276 reviews
Check prices

Comfort

8.3

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

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
1,276 reviews
Check prices

Comfort

8.3

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

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
3,662 reviews
EVA Air
8.4
Very Good
1,276 reviews
Check prices

Comfort

8.3

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

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
7,521 reviews
EVA Air
8.4
Very Good
1,276 reviews
Check prices

Comfort

8.3

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

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 16h 55m. 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 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, December is the cheapest month in which you can book a flight from United Kingdom to Ko Samui (average of £331). Flying from United Kingdom to Ko Samui in February is currently the most expensive (average of £720). 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

Browse thousands of different options on Cheapflights for your next trip

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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 13 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£116Average£146FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Air IndiaCheapest£420Average£502FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
LufthansaCheapest£568Average£845FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Austrian AirlinesCheapest£613Average£714FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
SWISSCheapest£622Average£727FlexibilityNo cancel feeOn-time79%
Search SWISS flights
KLMCheapest£648Average£955FlexibilityNo cancel feeOn-time75%
Search KLM flights
Etihad AirwaysCheapest£660Average£850FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Air FranceCheapest£671Average£999FlexibilityNo cancel feeOn-time77%
Search Air France flights
Turkish AirlinesCheapest£743Average£857FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
EVA AirCheapest£744Average£850FlexibilityNo 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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