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

สวิส อินเตอร์เนชั่นแนล แอร์ไลน์ can get you from Ko Samui to United Kingdom in just under 22h 15m. Your travel time can differ by up to . There are 9854 km between Ko Samui and United Kingdom.

In terms of precipitation, rainfall in United Kingdom ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit United Kingdom when rainfall is around 40.0 mm.

If weather is an important factor for your trip to United Kingdom, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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.

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

When flying from Ko Samui to United Kingdom, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

฿12,154+ Cheap Flights from Ko Samui to the United Kingdom

Cheap flight deals from Ko Samui to United Kingdom

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Ko Samui to United Kingdom
Explore the most affordable flight options available from Ko Samui to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Mon 19/1008:00 -

2 stops30h 45m

Mon 2/1108:45 -

2 stops26h 40m

Deal found 18/9฿25,973

Sun 1/1111:10 -

2 stops28h 25m

Sun 8/1108:45 -

3 stops25h 15m

Deal found 17/9฿27,372

Mon 19/1018:15 -

3 stops30h 30m

Mon 2/1109:30 -

2 stops23h 10m

Deal found 18/9฿28,071

Mon 12/1011:05 -

2 stops25h 30m

Mon 19/1013:50 -

3 stops24h 35m

Deal found 14/9฿30,069

Thu 8/1014:30 -

2 stops22h 10m

Thu 22/1006:30 -

3 stops26h 15m

Deal found 15/9฿35,264

Thu 8/1011:05 -

3 stops25h 55m

Thu 22/1014:45 -

3 stops35h 00m

Deal found 15/9฿35,430

Sun 1/1120:30 -

1 stop17h 10m

Sun 8/1121:10 -

2 stops27h 35m

Deal found 17/9฿36,829

Mon 19/1016:25 -

2 stops22h 15m

Mon 2/1113:30 -

2 stops24h 35m

Deal found 16/9฿41,923

Mon 19/1016:25 -

2 stops22h 15m

Mon 2/1118:15 -

2 stops19h 50m

Deal found 14/9฿42,823

Sun 1/1116:25 -

2 stops23h 15m

Sun 8/1117:15 -

2 stops20h 50m

Deal found 17/9฿45,453

Thu 8/1016:25 -

2 stops22h 15m

Thu 22/1018:00 -

2 stops21h 10m

Deal found 15/9฿48,783

Mon 12/1016:25 -

2 stops22h 15m

Mon 19/1013:10 -

2 stops17h 35m

Deal found 14/9฿50,048

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 18 September 2026.

Mon 19/1008:00 -

2 stops30h 45m

Mon 2/1108:45 -

2 stops26h 40m

Deal found 18/9฿25,973

Mon 19/1019:00 -

2 stops17h 40m

Mon 2/1108:35 -

2 stops26h 40m

Deal found 14/9฿37,761

Mon 19/1007:50 -

2 stops42h 50m

Mon 2/1116:15 -

2 stops21h 10m

Deal found 18/9฿41,724

Mon 19/1016:25 -

2 stops22h 15m

Mon 2/1113:30 -

2 stops24h 35m

Deal found 16/9฿41,923

Mon 19/1018:15 -

3 stops30h 30m

Mon 2/1109:30 -

2 stops23h 10m

Deal found 18/9฿28,071

Sun 1/1112:25 -

3 stops28h 55m

Sun 8/1108:45 -

3 stops25h 15m

Deal found 17/9฿28,337

Mon 12/1011:05 -

2 stops25h 30m

Mon 19/1013:50 -

3 stops24h 35m

Deal found 14/9฿30,069

Thu 8/1014:30 -

2 stops22h 10m

Thu 22/1006:30 -

3 stops26h 15m

Deal found 15/9฿35,264

Thu 8/1016:25 -

2 stops22h 15m

Thu 22/1018:00 -

2 stops21h 10m

Deal found 15/9฿48,783

Thu 8/1011:05 -

3 stops25h 55m

Thu 22/1014:45 -

3 stops35h 00m

Deal found 15/9฿35,430

Mon 12/1016:25 -

2 stops22h 15m

Mon 19/1013:10 -

2 stops17h 35m

Deal found 14/9฿50,048

Wed 23/1207:00 -

2 stops31h 45m

Sun 3/112:45 -

2 stops25h 35m

Deal found 17/9฿37,395

Wed 23/1207:00 -

2 stops42h 25m

Sun 3/108:25 -

2 stops23h 30m

Deal found 17/9฿39,459

Mon 12/1006:00 -

1 stop19h 15m

Mon 19/1022:40 -

2 stops26h 30m

Deal found 14/9฿41,357

Mon 19/1016:25 -

2 stops22h 15m

Mon 2/1118:15 -

2 stops19h 50m

Deal found 14/9฿42,823

Sun 1/1116:25 -

2 stops23h 15m

Sun 8/1117:15 -

2 stops20h 50m

Deal found 17/9฿45,453

Fri 18/1209:20 -

2 stops17h 15m

Fri 1/118:55 -

2 stops17h 55m

Deal found 15/9฿55,809

Last-minute flights from Ko Samui to United Kingdom
Discover last-minute flight deals from Ko Samui to United Kingdom. Data last updated 18 September 2026 and is based on user searches.

Thu 8/1014:30 -

2 stops22h 10m

Thu 22/1006:30 -

3 stops26h 15m

Deal found 15/9฿35,264

Thu 8/1011:05 -

3 stops25h 55m

Thu 22/1014:45 -

3 stops35h 00m

Deal found 15/9฿35,430

Thu 8/1016:25 -

2 stops22h 15m

Thu 22/1018:00 -

2 stops21h 10m

Deal found 15/9฿48,783

Mon 12/1011:05 -

2 stops25h 30m

Mon 19/1013:50 -

3 stops24h 35m

Deal found 14/9฿30,069

Mon 12/1016:25 -

2 stops22h 15m

Mon 19/1013:10 -

2 stops17h 35m

Deal found 14/9฿50,048

Mon 19/1008:00 -

2 stops30h 45m

Mon 2/1108:45 -

2 stops26h 40m

Deal found 18/9฿25,973

Mon 19/1018:15 -

3 stops30h 30m

Mon 2/1109:30 -

2 stops23h 10m

Deal found 18/9฿28,071

Mon 19/1019:00 -

2 stops17h 40m

Mon 2/1108:35 -

2 stops26h 40m

Deal found 14/9฿37,761

Mon 19/1016:25 -

2 stops22h 15m

Mon 2/1113:30 -

2 stops24h 35m

Deal found 16/9฿41,923

Mon 19/1016:25 -

2 stops22h 15m

Mon 2/1118:15 -

2 stops19h 50m

Deal found 14/9฿42,823

Find flight deals from Ko Samui to United Kingdom

Round-trip from	฿25,973
One-way from	฿12,154
Popular in	April
Cheapest in	August
Average price	฿43,921

19/10-2/11
4 total stops
57h 25m total
Ko Samui to United Kingdom

Search Deals

27/10-31/12
2 total stops
25h 15m total
Ko Samui to United Kingdom

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (฿274,965 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 8% potential price decrease (฿114,500 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ko Samui to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 12/10

08:40-19:10

3 stops40h 30m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

฿13,519

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sun 11/10

08:40-19:10

3 stops40h 30m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

฿13,519

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 13/10

11:05-19:30

3 stops38h 25m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

฿13,819

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 6/10

06:55-17:45

2 stops40h 50m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

฿14,518

Ko SamuiLondon

USM Ko Samui - LGW London Gatwick

USMLGW

Ko Samui

Tue 27/10

08:50-21:55

3 stops44h 05m

London Gatwick

Wed 31/12

00:00-06:00

Nonstop0h 00m

฿14,618

Ko SamuiLondon

USM Ko Samui - LGW London Gatwick

USMLGW

Ko Samui

Sun 11/10

08:40-15:00

2 stops36h 20m

London Gatwick

Wed 31/12

00:00-06:00

Nonstop0h 00m

฿14,652

Ko SamuiLondon

USM Ko Samui - LGW London Gatwick

USMLGW

Ko Samui

Tue 13/10

11:05-13:00

3 stops55h 55m

London Gatwick

Wed 31/12

00:00-06:00

Nonstop0h 00m

฿15,184

Ko SamuiLondon

USM Ko Samui - LGW London Gatwick

USMLGW

Ko Samui

Wed 28/10

08:50-07:10

3 stops29h 20m

London Gatwick

Wed 31/12

00:00-06:00

Nonstop0h 00m

฿15,651

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sat 27/2

08:55-18:25

2 stops40h 30m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

฿15,784

Ko SamuiLondon

USM Ko Samui - LGW London Gatwick

USMLGW

Ko Samui

Sat 27/2

16:30-06:20

2 stops20h 50m

London Gatwick

Wed 31/12

00:00-06:00

Nonstop0h 00m

฿16,050

Flights are sorted by cheapest return flights first.

Deals found on 18/9

Showing 1-10 of 43 resultsSorted by cheapest first

...

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.

USM-LHR

USM-LCY

USM-LGW

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

USM-GB0

USM-LHR

USM-LCY

USM-LGW

No data available for this route at this time. Please check back soon.

Related info for your journey

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?
สวิส อินเตอร์เนชั่นแนล แอร์ไลน์ can get you from Ko Samui to United Kingdom in just under 22h 15m. Your travel time can differ by up to . There are 9854 km between Ko Samui and United Kingdom.
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.

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Cheapflights helps you search for flights from Ko Samui to United Kingdom via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ko Samui to United Kingdom flexibly with Cheapflights today.

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

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Cheap flights from Ko Samui to the United Kingdom from ฿12,154

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ko Samui to United Kingdom

Cheapest flights from Ko Samui to United KingdomExplore the most affordable flight options available from Ko Samui to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Explore the most affordable flight options available from Ko Samui to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Best flights from Ko Samui to United KingdomDiscover 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 18 September 2026.

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 18 September 2026.

Last-minute flights from Ko Samui to United KingdomDiscover last-minute flight deals from Ko Samui to United Kingdom. Data last updated 18 September 2026 and is based on user searches.

Discover last-minute flight deals from Ko Samui to United Kingdom. Data last updated 18 September 2026 and is based on user searches.

One-way flights from Ko Samui to United KingdomSearch for one-way flight options from Ko Samui to United Kingdom. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.

Search for one-way flight options from Ko Samui to United Kingdom. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.

Find flight deals from Ko Samui to United Kingdom

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Ko Samui to the United Kingdom that are best for you.

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.

Cheapflights Insights

Related info for your journey

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

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

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

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

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

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

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 Ko Samui to United Kingdom

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Complete your trip

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Search flights from Ko Samui to United Kingdom by cabin class

Find flights from Ko Samui to United Kingdom, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Ko Samui and United Kingdom flights

Browse other Ko Samui and United Kingdom flight options. Last updated on 18 September 2026.

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Cheapest flights from Ko Samui to United Kingdom
Explore the most affordable flight options available from Ko Samui to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

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 18 September 2026.

Last-minute flights from Ko Samui to United Kingdom
Discover last-minute flight deals from Ko Samui to United Kingdom. Data last updated 18 September 2026 and is based on user searches.

One-way flights from Ko Samui to United Kingdom
Search for one-way flight options from Ko Samui to United Kingdom. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.