Which stopover airport has the shortest travel time from Ko Samui to London?

Flights connecting via Bangkok (BKK) have the shortest average one-way travel time: 16h 16m.

Which airport is the most popular for stopovers for flights between Ko Samui and London?

Bangkok (BKK) was the most common stop: 90% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from Ko Samui to London?

Flights via Bangkok (BKK) offer the lowest average return price of £1,069.

Which stopover airport has the shortest connection time from Ko Samui to London?

Bangkok (BKK) has the shortest average stopover time for this route: 2h 13m.

What is the cheapest airline that flies from Ko Samui to London?

Singapore Airlines, EVA Air, and SWISS are the most popular carriers operating from Ko Samui to London

When did momondo last update prices for flights from Ko Samui Airport to London?

Prices for flights from Ko Samui Airport to London are refreshed on a daily basis.

How old do you have to be to fly from Ko Samui Airport to London?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ko Samui Airport to London.

What documentation or ID do you need to fly to London?

The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£271 Cheap Flights from Ko Samui to London in 2025

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Round-trip

One-way

Cheap return flights

17:25 - 07:30USM-LHR

20h 05m2 stops

12:30 - 17:05LHR-USM

22h 35m2 stops

£853

Find Deal

Sun, 7 Sep - Sat, 20 Sep

15:25 - 13:25USM-LGW

28h 00m2 stops

09:00 - 18:00LGW-USM

27h 00m2 stops

£853Qatar Airways

Find Deal

Sun, 7 Sep - Sat, 20 Sep

08:00 - 06:30USM-LGW

28h 30m2 stops

11:35 - 17:05LGW-USM

23h 30m2 stops

£865

Find Deal

Fri, 5 Sep - Sun, 14 Sep

14:30 - 11:30USM-LHR

27h 00m2 stops

20:35 - 07:20LHR-USM

28h 45m2 stops

£866

Find Deal

Fri, 5 Sep - Sun, 14 Sep

08:45 - 19:20USM-LHR

16h 35m1 stop

21:35 - 20:30LHR-USM

16h 55m1 stop

£932

Find Deal

Sun, 7 Sep - Sat, 20 Sep

10:05 - 07:35USM-LCY

27h 30m2 stops

12:15 - 13:45LCY-USM

19h 30m2 stops

£976SWISS

Find Deal

Sun, 7 Sep - Sat, 20 Sep

10:05 - 08:45USM-LCY

28h 40m2 stops

14:20 - 12:45LCY-USM

16h 25m2 stops

£1,188SWISS

Find Deal

Fri, 5 Sep - Sun, 14 Sep

10:55 - 06:20USM-LHR

25h 25m1 stop

12:20 - 20:50LHR-USM

26h 30m2 stops

£1,294Cathay Pacific

Find Deal

Fri, 5 Sep - Sun, 14 Sep

19:25 - 06:40USM-LGW

17h 15m1 stop

10:00 - 11:10LGW-USM

19h 10m1 stop

£1,486Singapore Airlines

Find Deal

Fri, 5 Sep - Sun, 14 Sep

18:00 - 06:40USM-LGW

18h 40m1 stop

10:00 - 11:10LGW-USM

19h 10m1 stop

£1,596Singapore Airlines

Find Deal

Sun, 7 Sep - Sat, 20 Sep

Singapore Airlines flights from Ko Samui to London

Our best Singapore Airlines deals on Ko Samui to London flight tickets

Singapore Airlines

5 Sept

USM19:25Ko Samui

17h 15m

1 stop

LGW06:40London Gatwick

14 Sept

LGW10:00London Gatwick

19h 10m

1 stop

USM11:10Ko Samui

£1,486

Find similar

Singapore Airlines

7 Sept

USM18:00Ko Samui

18h 40m

1 stop

LGW06:40London Gatwick

20 Sept

LGW10:00London Gatwick

19h 10m

1 stop

USM11:10Ko Samui

£1,596

Find similar

SWISS flights from Ko Samui to London

Our best SWISS deals on Ko Samui to London flight tickets

SWISS

7 Sept

USM10:05Ko Samui

27h 30m

2 stops

LCY07:35London City

20 Sept

LCY12:15London City

19h 30m

2 stops

USM13:45Ko Samui

£976

Find similar

SWISS

5 Sept

USM10:05Ko Samui

28h 40m

2 stops

LCY08:45London City

14 Sept

LCY14:20London City

16h 25m

2 stops

USM12:45Ko Samui

£1,188

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sun 7/9

17:25-07:30

2 stops20h 05m

London Heathrow

Sat 20/9

12:30-17:05

2 stops22h 35m

£853

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Sun 7/9

15:25-13:25

2 stops28h 00m

London Gatwick

Sat 20/9

09:00-18:00

2 stops27h 00m

£853

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Fri 5/9

08:00-06:30

2 stops28h 30m

London Gatwick

Sun 14/9

11:35-17:05

2 stops23h 30m

£865

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 5/9

14:30-11:30

2 stops27h 00m

London Heathrow

Sun 14/9

20:35-07:20

2 stops28h 45m

£866

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sun 7/9

08:45-19:20

1 stop16h 35m

London Heathrow

Sat 20/9

21:35-20:30

1 stop16h 55m

£932

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Sun 7/9

10:05-07:35

2 stops27h 30m

London City

Sat 20/9

12:15-13:45

2 stops19h 30m

£976

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Fri 5/9

10:05-08:45

2 stops28h 40m

London City

Sun 14/9

14:20-12:45

2 stops16h 25m

£1,188

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 5/9

10:55-06:20

1 stop25h 25m

London Heathrow

Sun 14/9

12:20-20:50

2 stops26h 30m

£1,294

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Fri 5/9

19:25-06:40

1 stop17h 15m

London Gatwick

Sun 14/9

10:00-11:10

1 stop19h 10m

£1,486

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Sun 7/9

18:00-06:40

1 stop18h 40m

London Gatwick

Sat 20/9

10:00-11:10

1 stop19h 10m

£1,596

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ko Samui to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Stopovers

What is the cheapest day to depart on your flight to London?

Our data shows that Friday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £522. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Ko Samui to London for around £640.

What is the cheapest time of day to depart on your flight to London?

The cheapest time of day to fly to London is in the morning when flights can be purchased for as low as £564. Flights in the afternoon are often more expensive, with an average ticket price of £628.

Can stopping save me money on Ko Samui to London flights?

You could potentially save up to 1% on your flight if you consider stops on a Ko Samui to London flight.

How have Ko Samui to London flight prices changed over time?

As of August 2025, prices for Ko Samui to London flights are approximately 23% more expensive when compared to flights at the same time last year.

When to book flights from Ko Samui to London

Are you open to changing your travel dates? Check out the ideal times to fly from Ko Samui to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Ko Samui to London (USM to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ko Samui to London

Best price found	£325
Fastest flight time	16h 05m
Direct flights	None
Airports in London	3 airports

The best one-way flight to London from Ko Samui in the past 72 hours is £325. The best return flight deal from Ko Samui to London found on momondo in the last 72 hours is £853.

The fastest flight from Ko Samui to London takes 16h 05m

There are no direct flights from Ko Samui to London. Popular non-direct routes for this connection are Ko Samui Airport - London Gatwick Airport, Ko Samui Airport - London Heathrow Airport and Ko Samui Airport - London City Airport.

There are 3 airports near London: London City (LCY), London Heathrow (LHR), London Gatwick (LGW)

Search flight deals

How far is Ko Samui to London by plane?
The straight-line distance from Ko Samui to London is 6131.1 mi. Typically, this will take 16h 05m by plane in normal conditions.
When did momondo last update prices for flights from Ko Samui Airport to London?
Prices for flights from Ko Samui Airport to London are refreshed on a daily basis.
How old do you have to be to fly from Ko Samui Airport to London?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ko Samui Airport to London.
What documentation or ID do you need to fly to London?
The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ko Samui to London?
Based on momondo bookings for flights between Ko Samui and London, the leading airline is Qatar Airways, making up 49% of the total bookings. Other popular airlines include Austrian Airlines with 29% and EVA Air with 22%.

Eastbourne

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Luton

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Southend-on-Sea

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Ipswich

Ilford

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Guildford

Colchester

Worthing

Hounslow

Dover

Winchester

Margate

Chelmsford

Bedford

Why use momondo?

Why should I use momondo to find a flight deal from Ko Samui to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ko Samui to London . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ko Samui to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ko Samui to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Ko Samui to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ko Samui to London.

I’m not ready to book a flight from Ko Samui to London right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ko Samui to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Ko Samui to London from £325

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ko Samui to London departing on 25/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

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Price Alerts

Price Alerts

Find the cheapest flights from Ko Samui to London

Cheap return flights

Cheap one-way flights

Singapore Airlines flights from Ko Samui to London

Our best Singapore Airlines deals on Ko Samui to London flight tickets

SWISS flights from Ko Samui to London

Our best SWISS deals on Ko Samui to London flight tickets

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

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How to get the cheapest flight ticket from Ko Samui to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to London?

Our data shows that Friday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £522. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Ko Samui to London for around £640.

What is the cheapest time of day to depart on your flight to London?

The cheapest time of day to fly to London is in the morning when flights can be purchased for as low as £564. Flights in the afternoon are often more expensive, with an average ticket price of £628.

Can stopping save me money on Ko Samui to London flights?

You could potentially save up to 1% on your flight if you consider stops on a Ko Samui to London flight.

How have Ko Samui to London flight prices changed over time?

As of August 2025, prices for Ko Samui to London flights are approximately 23% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Ko Samui to London?

Singapore Airlines, EVA Air, and SWISS are the most popular carriers operating from Ko Samui to London

Which airport is the most popular for stopovers for flights between Ko Samui and London?

Bangkok (BKK) was the most common stop: 90% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from Ko Samui to London?

Flights via Bangkok (BKK) offer the lowest average return price of £1,069.

Which stopover airport has the shortest travel time from Ko Samui to London?

Flights connecting via Bangkok (BKK) have the shortest average one-way travel time: 16h 16m.

Which stopover airport has the shortest connection time from Ko Samui to London?

Bangkok (BKK) has the shortest average stopover time for this route: 2h 13m.

When to book flights from Ko Samui to London

Cheap Ko Samui to London (USM to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ko Samui to London

Best price found

Fastest flight time

Direct flights

Airports in London

How far is Ko Samui to London by plane?

When did momondo last update prices for flights from Ko Samui Airport to London?

How old do you have to be to fly from Ko Samui Airport to London?

What documentation or ID do you need to fly to London?

What is the most popular airline from Ko Samui to London?

Travelling to a place near London?

Why use momondo?

Why should I use momondo to find a flight deal from Ko Samui to London?

Can I find flights from Ko Samui to London with flexible booking policies on momondo?

How can momondo help me find flights from Ko Samui to London?

I’m not ready to book a flight from Ko Samui to London right now. Can momondo alert me if prices change?

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London