How long is the flight from Ko Samui to London?

Emirates and Etihad Airways can get you from Ko Samui to London in just under 24h 25m. Your travel time can differ by up to 2h 05m. Ko Samui and London are separated by a distance of 6138 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in London 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 London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, 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 London?

When deciding which route to take from Ko Samui to London 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 LON?

When flying from Ko Samui to London, 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 London?

If you book a flight to London from Ko Samui, you will be flying from Ko Samui, which is the city’s only airport. Ko Samui (USM) is located 2.1 mi from the center of Ko Samui. There are 0 flights from Ko Samui to London per day from 0 different airlines.

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

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

How can I find direct flights from Ko Samui to London?

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

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

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

£273+ Cheap Flights from Ko Samui to London

Cheap flight deals from Ko Samui to London

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Ko Samui to London
Explore the most affordable flight options available from Ko Samui to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 October 2026.

Sun 8/1107:55 -

2 stops31h 40m

Tue 24/1108:50 -

3 stops23h 30m

Deal found 14/10£592

Wed 25/1108:15 -

2 stops30h 30m

Wed 2/1208:45 -

2 stops25h 45m

Deal found 11/10£662

Wed 25/1107:55 -

2 stops34h 10m

Wed 2/1220:30 -

2 stops28h 05m

Deal found 11/10£751

Sun 8/1107:00 -

2 stops30h 35m

Tue 24/1122:00 -

2 stops29h 35m

Deal found 14/10£770

Thu 26/1107:55 -

2 stops34h 10m

Thu 3/1220:30 -

2 stops29h 50m

Deal found 12/10£831

Thu 5/1118:15 -

2 stops24h 25m

Mon 9/1120:25 -

2 stops31h 15m

Deal found 9/10£866

Thu 5/1115:50 -

2 stops21h 05m

Mon 9/1108:35 -

2 stops43h 05m

Deal found 12/10£882

Thu 5/1121:10 -

2 stops21h 55m

Mon 9/1113:55 -

2 stops20h 35m

Deal found 14/10£886

Thu 5/1114:05 -

2 stops22h 50m

Mon 9/1108:25 -

2 stops28h 25m

Deal found 9/10£905

Wed 25/1107:55 -

1 stop18h 10m

Wed 2/1221:20 -

1 stop16h 05m

Deal found 11/10£969

Thu 26/1108:30 -

1 stop17h 35m

Thu 3/1221:20 -

1 stop17h 00m

Deal found 12/10£987

Best flights from Ko Samui to London
Discover carefully curated flight deals from Ko Samui to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 October 2026.

Sun 8/1107:55 -

2 stops31h 40m

Tue 24/1108:50 -

3 stops23h 30m

Deal found 14/10£592

Thu 5/1118:15 -

2 stops24h 25m

Mon 9/1120:25 -

2 stops31h 15m

Deal found 9/10£866

Thu 5/1115:50 -

2 stops21h 05m

Mon 9/1108:35 -

2 stops43h 05m

Deal found 12/10£882

Thu 5/1121:10 -

2 stops21h 55m

Mon 9/1113:55 -

2 stops20h 35m

Deal found 14/10£886

Wed 25/1118:05 -

1 stop22h 00m

Wed 2/1213:05 -

1 stop21h 05m

Deal found 11/10£896

Thu 5/1114:05 -

2 stops22h 50m

Mon 9/1108:25 -

2 stops28h 25m

Deal found 9/10£905

Wed 25/1107:55 -

1 stop18h 10m

Wed 2/1221:20 -

1 stop16h 05m

Deal found 11/10£969

Thu 4/308:30 -

2 stops33h 35m

Mon 15/309:30 -

2 stops20h 05m

Deal found 10/10£718

Sun 8/1107:00 -

2 stops30h 35m

Tue 24/1122:00 -

2 stops29h 35m

Deal found 14/10£770

Thu 4/314:05 -

2 stops23h 25m

Mon 15/307:00 -

3 stops22h 35m

Deal found 10/10£809

Thu 26/1107:55 -

2 stops34h 10m

Thu 3/1220:30 -

2 stops29h 50m

Deal found 12/10£831

Wed 25/1112:00 -

2 stops26h 10m

Wed 2/1217:40 -

1 stop20h 40m

Deal found 11/10£889

Thu 5/1118:05 -

1 stop19h 20m

Mon 9/1113:05 -

1 stop21h 05m

Deal found 12/10£1,451

Wed 25/1107:55 -

1 stop18h 40m

Wed 2/1221:10 -

2 stops27h 25m

Deal found 11/10£952

Find flight deals from Ko Samui to London

Round-trip from	£592
One-way from	£273

8/11-24/11
5 total stops
55h 10m total
Ko Samui to London

Search Deals

27/10-31/12
1 total stop
25h 05m total
Ko Samui to London

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Ko SamuiLondon

USM Ko Samui - LGW London Gatwick

USMLGW

Ko Samui

Tue 27/10

15:50-15:35

2 stops30h 45m

London Gatwick

Wed 31/12

00:00-06:00

Nonstop0h 00m

£285

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sun 20/12

17:00-09:20

2 stops23h 20m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

£304

Ko SamuiLondon

USM Ko Samui - LGW London Gatwick

USMLGW

Ko Samui

Tue 20/10

19:00-18:35

3 stops29h 35m

London Gatwick

Wed 31/12

00:00-06:00

Nonstop0h 00m

£343

Ko SamuiLondon

USM Ko Samui - LGW London Gatwick

USMLGW

Ko Samui

Sun 20/12

19:50-14:05

3 stops25h 15m

London Gatwick

Wed 31/12

00:00-06:00

Nonstop0h 00m

£348

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 26/1

08:40-11:05

2 stops33h 25m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

£358

Ko SamuiLondon

USM Ko Samui - LGW London Gatwick

USMLGW

Ko Samui

Fri 5/3

08:50-13:40

3 stops35h 50m

London Gatwick

Wed 31/12

00:00-06:00

Nonstop0h 00m

£358

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Wed 7/4

07:50-06:20

3 stops52h 30m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

£374

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 1/2

18:05-19:50

3 stops32h 45m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

£389

Ko SamuiLondon

USM Ko Samui - LGW London Gatwick

USMLGW

Ko Samui

Mon 1/2

21:10-21:05

1 stop30h 55m

London Gatwick

Wed 31/12

00:00-06:00

Nonstop0h 00m

£392

Ko SamuiLondon

USM Ko Samui - LGW London Gatwick

USMLGW

Ko Samui

Tue 26/1

16:30-06:30

2 stops21h 00m

London Gatwick

Wed 31/12

00:00-06:00

Nonstop0h 00m

£428

Flights are sorted by cheapest return flights first.

Deals found on 13/10

Showing 1-10 of 29 resultsSorted by cheapest first

Best time to book a flight from Ko Samui to London

Have a flexible travel schedule? Discover the best time to fly to London from Ko Samui with our price prediction graph.

USM-LON

USM-LGW

USM-LHR

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 London

USM-LON

USM-LGW

USM-LHR

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 London?
If you book a flight to London from Ko Samui, you will be flying from Ko Samui, which is the city’s only airport. Ko Samui (USM) is located 2.1 mi from the center of Ko Samui. There are 0 flights from Ko Samui to London per day from 0 different airlines.
How long is the flight from Ko Samui to London?
Emirates and Etihad Airways can get you from Ko Samui to London in just under 24h 25m. Your travel time can differ by up to 2h 05m. Ko Samui and London are separated by a distance of 6138 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the most popular routes from Ko Samui to London?
When deciding which route to take from Ko Samui to London 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 London that include hotel bookings?
Yes. In addition to deals on Ko Samui to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Ko Samui to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ko Samui to London.
Can I find deals for business class flights from Ko Samui to London?
Yes. Cheapflights offers flight deals from Ko Samui to London 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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How does Cheapflights help users find flights from Ko Samui to London?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ko Samui to London. 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 Ko Samui to London?

Cheapflights helps you find that perfect flight to London from Ko Samui by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from Ko Samui to London with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Ko Samui today and book when prices fit your budget.

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Cheap flights from Ko Samui to London from £273

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 London

Cheapest flights from Ko Samui to LondonExplore the most affordable flight options available from Ko Samui to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 October 2026.

Explore the most affordable flight options available from Ko Samui to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 October 2026.

Best flights from Ko Samui to LondonDiscover carefully curated flight deals from Ko Samui to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 October 2026.

Discover carefully curated flight deals from Ko Samui to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 October 2026.

Last-minute flights from Ko Samui to LondonDiscover last-minute flight deals from Ko Samui to London. Data last updated 14 October 2026 and is based on user searches.

Discover last-minute flight deals from Ko Samui to London. Data last updated 14 October 2026 and is based on user searches.

One-way flights from Ko Samui to LondonSearch for one-way flight options from Ko Samui to London. Find affordable one-way fares based on user searches. Data last updated 14 October 2026.

Search for one-way flight options from Ko Samui to London. Find affordable one-way fares based on user searches. Data last updated 14 October 2026.

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Best time to book a flight from Ko Samui to London

Have a flexible travel schedule? Discover the best time to fly to London 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 London?

How long is the flight from Ko Samui to London?

What are the most popular routes from Ko Samui to London?

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

How can I find direct flights from Ko Samui to London?

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

Travelling to a place near London?

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 London

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Complete your trip

Complete your trip to London by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to England

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Search flights from Ko Samui to London by cabin class

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Other flights to London

Explore flights to London departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 14 October 2026.

Ko Samui and London flights

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

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Cheapest flights from Ko Samui to London
Explore the most affordable flight options available from Ko Samui to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 October 2026.

Best flights from Ko Samui to London
Discover carefully curated flight deals from Ko Samui to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 October 2026.

Last-minute flights from Ko Samui to London
Discover last-minute flight deals from Ko Samui to London. Data last updated 14 October 2026 and is based on user searches.

One-way flights from Ko Samui to London
Search for one-way flight options from Ko Samui to London. Find affordable one-way fares based on user searches. Data last updated 14 October 2026.