Cheap flights from the United Kingdom to Ko Samui from £276

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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — USM
22 Jan — 29 Jan1
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 23 December 2025.

Wed 31/1210:50MAN - USM
2 stops18h 25mMultiple Airlines
Tue 13/119:00USM - MAN
2 stops21h 50mMultiple Airlines
Deal found 22/12£889
Fri 26/1221:35STN - USM
2 stops31h 15mMultiple Airlines
Sun 11/121:10USM - STN
3 stops32h 25mMultiple Airlines
Deal found 21/12£897
Wed 31/1210:25MAN - USM
2 stops21h 35mMultiple Airlines
Wed 21/111:40USM - MAN
1 stop27h 15mMultiple Airlines
Deal found 21/12£901
Mon 29/1220:15LHR - USM
2 stops35h 45mMultiple Airlines
Mon 19/116:30USM - LHR
2 stops29h 30mMultiple Airlines
Deal found 21/12£908
Thu 25/1208:30LGW - USM
2 stops17h 50mMultiple Airlines
Sun 18/119:45USM - LGW
2 stops27h 25mMultiple Airlines
Deal found 22/12£922
Fri 26/1211:00LHR - USM
2 stops21h 00mMultiple Airlines
Fri 23/111:40USM - LHR
1 stop34h 20mMultiple Airlines
Deal found 21/12£937
Fri 26/1211:00LHR - USM
2 stops21h 00mMultiple Airlines
Fri 16/111:40USM - LHR
1 stop34h 20mMultiple Airlines
Deal found 21/12£962
Sun 28/1222:05LHR - USM
2 stops25h 50mMultiple Airlines
Mon 19/111:40USM - LHR
1 stop24h 45mMultiple Airlines
Deal found 21/12£972
Thu 25/1206:40LHR - USM
3 stops29h 20mMultiple Airlines
Sun 18/121:20USM - LHR
2 stops27h 50mMultiple Airlines
Deal found 22/12£977
Fri 26/1220:15LHR - USM
2 stops27h 40mMultiple Airlines
Mon 26/111:40USM - LHR
1 stop34h 20mMultiple Airlines
Deal found 21/12£1,007
Fri 26/1207:00LGW - USM
2 stops19h 20mMultiple Airlines
Thu 8/119:00USM - LGW
2 stops24h 20mMultiple Airlines
Deal found 23/12£1,027
Fri 26/1207:00LGW - USM
2 stops19h 20mMultiple Airlines
Wed 7/120:20USM - LGW
2 stops23h 00mMultiple Airlines
Deal found 23/12£1,036

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 23 December 2025.

Round-trip from

£636

One-way from

£276

Popular in

December

Cheapest in

May

Average price

£1,172
SWISS
  • SWISS
  • 19/5-1/6
  • 4 total stops
  • 50h 45m total
  • United Kingdom to Ko Samui
8/3
  • 8/3
  • 2 total stops
  • 34h 30m total
  • United Kingdom to Ko Samui
Highest demand for flights based on searches. 5% potential increase in price (£35 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£19 potential savings vs. average return price).
Average for round-trip flights in December 2025

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 23 December 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

Tue 19/5

08:50-12:45

2 stops21h 55m

Ko Samui

Mon 1/6

09:15-08:05

2 stops28h 50m

£636

ManchesterKo Samui

MAN - USM

MANUSM

Manchester

Wed 6/5

09:00-12:45

2 stops21h 45m

Ko Samui

Mon 25/5

19:55-09:50

2 stops19h 55m

£679

ManchesterKo Samui

MAN - USM

MANUSM

Manchester

Wed 6/5

14:05-12:45

2 stops16h 40m

Ko Samui

Wed 2/12

16:25-13:15

2 stops27h 50m

£680

BirminghamKo Samui

BHX - USM

BHXUSM

Birmingham

Tue 19/5

10:25-16:35

3 stops24h 10m

Ko Samui

Mon 1/6

09:15-08:05

2 stops28h 50m

£700

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 4/5

19:25-21:10

1 stop19h 45m

Ko Samui

Fri 15/5

13:30-05:25

2 stops21h 55m

£730

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Fri 24/4

14:45-21:35

2 stops24h 50m

Ko Samui

Sun 10/5

18:55-15:15

2 stops26h 20m

£753

LondonKo Samui

LCY - USM

LCYUSM

London City

Sun 10/5

19:15-21:10

2 stops19h 55m

Ko Samui

Tue 12/5

10:05-08:40

2 stops28h 35m

£757

LondonKo Samui

LTN - USM

LTNUSM

London Luton

Fri 10/4

06:00-14:50

3 stops26h 50m

Ko Samui

Sun 26/4

17:50-12:05

3 stops24h 15m

£759

ManchesterKo Samui

MAN - USM

MANUSM

Manchester

Fri 8/5

18:40-21:10

2 stops20h 30m

Ko Samui

Fri 22/5

19:55-10:25

3 stops20h 30m

£760

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 16/3

13:55-17:00

2 stops20h 05m

Ko Samui

Tue 17/3

19:00-12:05

2 stops24h 05m

£764

Flights are sorted by cheapest return flights first.

Deals found on 22/12

Showing 1-10 of 60 results
1
2
3
...
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, December is the cheapest month in which you can book a flight from United Kingdom to Ko Samui (average of £342). Flying from United Kingdom to Ko Samui in February is currently the most expensive (average of £705). 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 23 December 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.

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 158 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?

Tuesday 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.

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 23 December 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.

Entertainment

8.0

Crew

8.6

Overall

8.5

Food

8.1

Boarding

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

Entertainment

8.0

Crew

8.6

Overall

8.5

Food

8.1

Boarding

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

Entertainment

8.0

Crew

8.6

Overall

8.5

Food

8.1

Boarding

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

Entertainment

8.0

Crew

8.6

Overall

8.5

Food

8.1

Boarding

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

Entertainment

8.0

Crew

8.6

Overall

8.5

Food

8.1

Boarding

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

Entertainment

8.0

Crew

8.6

Overall

8.5

Food

8.1

Boarding

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

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 19h 45m. United Kingdom and Ko Samui are separated by a distance of 6144 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?

    £449 is the cheapest one-way deal found within the past few days, from Qatar Airways. You may also be able to find cheap deals on Etihad Airways and Singapore Airlines, with prices starting from £481 and £489, respectively.

  • What are the most popular routes 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 £342). Flying from United Kingdom to Ko Samui in February is currently the most expensive (average of £705). 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

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.

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 23 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£114Average£143FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Air IndiaCheapest£473Average£491FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
LufthansaCheapest£555Average£734FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Austrian AirlinesCheapest£600Average£694FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
SWISSCheapest£605Average£715FlexibilityNo cancel feeOn-time79%
Search SWISS flights
KLMCheapest£634Average£926FlexibilityNo cancel feeOn-time75%
Search KLM flights
Etihad AirwaysCheapest£645Average£852FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Air FranceCheapest£656Average£1,001FlexibilityNo cancel feeOn-time77%
Search Air France flights
EVA AirCheapest£726Average£823FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
Turkish AirlinesCheapest£726Average£844FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines 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.

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.