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Cheap flights from Ko Samui to the United Kingdom from ฿14,433

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 17/2. Fares are subject to change and may not be available on all flights or dates of travel.
USM — LHR
4 Jan — 11 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ko Samui to United Kingdom

Enter your travel dates to find the best prices.

Best flights from Ko Samui to United Kingdom
Discover carefully curated flight deals from Ko Samui to United Kingdom that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 December 2025.

Sun 18/121:10USM - LHR
2 stops26h 50mMultiple Airlines
Sun 25/121:00LHR - USM
2 stops28h 25mMultiple Airlines
Deal found 4/12฿30,689
Mon 9/311:40USM - LGW
2 stops25h 15mQatar Airways
Fri 13/309:00LGW - USM
2 stops26h 15mQatar Airways
Deal found 2/12฿40,482
Mon 9/319:10USM - LGW
1 stop17h 20mบริติชแอร์เวย์
Fri 13/321:15LGW - USM
1 stop15h 35mบริติชแอร์เวย์
Deal found 2/12฿41,762
Mon 9/311:40USM - LHR
2 stops25h 45mQatar Airways
Fri 13/308:05LHR - USM
2 stops27h 10mQatar Airways
Deal found 2/12฿41,794
Mon 9/313:25USM - LHR
1 stop23h 30mบริติชแอร์เวย์
Fri 13/318:40LHR - USM
1 stop19h 25mบริติชแอร์เวย์
Deal found 2/12฿44,674

Find flight deals from Ko Samui to United Kingdom

Keep the following information in mind while searching for Ko Samui to United Kingdom flight deals. Data was last updated 5 December 2025.

Round-trip from

฿30,689

One-way from

฿14,433

Popular in

January

Cheapest in

June

Average price

฿41,762
18/1-25/1
  • 18/1-25/1
  • 4 total stops
  • 55h 15m total
  • Ko Samui to United Kingdom
Search Deals
17/2
  • 17/2
  • 3 total stops
  • 33h 20m total
  • Ko Samui to United Kingdom
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (฿240,359 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (฿85,320 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ko Samui to United Kingdom 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 17,341 searches. Data last updated 5 December 2025.
Use the filters below to find and compare flights from Ko Samui to the United Kingdom that are best for you.

Fly from

Ko Samui

Fly to

United Kingdom

Route

Depart

Return

Price

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sun 18/1

21:10-17:00

2 stops26h 50m

London Heathrow

Sun 25/1

21:00-08:25

2 stops28h 25m

฿30,689

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Mon 9/3

11:40-05:55

2 stops25h 15m

London Gatwick

Fri 13/3

09:00-18:15

2 stops26h 15m

฿40,482

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Mon 9/3

19:10-05:30

1 stop17h 20m

London Gatwick

Fri 13/3

21:15-19:50

1 stop15h 35m

฿41,762

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 9/3

11:40-06:25

2 stops25h 45m

London Heathrow

Fri 13/3

08:05-18:15

2 stops27h 10m

฿41,794

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 9/3

13:25-05:55

1 stop23h 30m

London Heathrow

Fri 13/3

18:40-21:05

1 stop19h 25m

฿44,674

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Tue 17/2

19:00-21:20

3 stops33h 20m

฿14,433

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 7/5

15:50-19:30

3 stops33h 40m

฿14,977

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 16/2

12:25-18:10

3 stops36h 45m

฿15,937

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Mon 16/2

15:50-23:40

3 stops38h 50m

฿16,129

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Wed 18/2

19:00-14:40

3 stops26h 40m

฿16,321

Flights are sorted by cheapest return flights first.

Deals found on 4/12

Showing 1-10 of 32 results
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Best time to book a flight from Ko Samui to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from 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 from Ko Samui to the United Kingdom
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Ko Samui to United Kingdom. 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 from for flights from Ko Samui to United Kingdom?

    Ko Samui (USM), located 3.3 km from the city centre, is the airport you fly out of when you book flights from Ko Samui to United Kingdom.

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

    Qatar Airways and บริติชแอร์เวย์ can get you from Ko Samui to United Kingdom in just under 17h 20m. Your travel time can differ by up to 7h 55m. There are 9878 km between Ko Samui and United Kingdom. This flight may include one or multiple stops.

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

    When deciding which route to take from Ko Samui to United Kingdom, consider Ko Samui - London Gatwick, Ko Samui - London Heathrow or Ko Samui - London City, as they are the most popular.

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

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

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

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

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

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

See more FAQs

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Alternative routes for Ko Samui to United Kingdom

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