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

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

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

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 Heathrow Airport.

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

The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£277 Cheap Flights from Ko Samui to London Heathrow Airport in 2026

Find the cheapest flights from Ko Samui to London

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

06:00 - 07:30USM Ko Samui-LHR London Heathrow

31h 30m2 stops Bangkok Suvarnabhumi New Delhi Indira Gandhi Intl

20:30 - 07:10LHR London Heathrow-USM Ko Samui

27h 40m2 stops Mumbai Chhatrapati Shivaji Intl Bangkok Suvarnabhumi

£763Multiple Airlines

Tue, 20 Oct - Tue, 27 Oct

19:00 - 11:30USM Ko Samui-LHR London Heathrow

23h 30m2 stops Phuket City New Delhi Indira Gandhi Intl

19:25 - 19:50LHR London Heathrow-USM Ko Samui

17h 25m2 stops Vienna Intl Bangkok Suvarnabhumi

£776Multiple Airlines

Tue, 15 Dec - Fri, 15 Jan

14:00 - 10:15USM Ko Samui-LHR London Heathrow

26h 15m2 stops Bangkok Suvarnabhumi Mumbai Chhatrapati Shivaji Intl

19:20 - 10:40LHR London Heathrow-USM Ko Samui

32h 20m2 stops Abu Dhabi Zayed Intl Phuket City

£793Multiple Airlines

Mon, 19 Oct - Mon, 26 Oct

07:55 - 07:30USM Ko Samui-LHR London Heathrow

30h 35m2 stops Bangkok Suvarnabhumi Riyadh King Khaled Intl

14:15 - 20:25LHR London Heathrow-USM Ko Samui

23h 10m2 stops Jeddah King Abdulaziz Intl Bangkok Suvarnabhumi

£852Multiple Airlines

Sat, 27 Feb - Sun, 28 Feb

11:25 - 15:05USM Ko Samui-LHR London Heathrow

33h 40m2 stops Phuket City Abu Dhabi Zayed Intl

13:55 - 08:10LHR London Heathrow-USM Ko Samui

35h 15m3 stops Abu Dhabi Zayed Intl Phuket City Bangkok Suvarnabhumi

£859Multiple Airlines

Mon, 19 Oct - Mon, 26 Oct

07:00 - 19:35USM Ko Samui-LHR London Heathrow

19h 35m1 stop Bangkok Suvarnabhumi

17:45 - 21:20LHR London Heathrow-USM Ko Samui

20h 35m2 stops Beijing Capital Bangkok Suvarnabhumi

£885Multiple Airlines

Tue, 15 Dec - Fri, 15 Jan

19:00 - 06:30USM Ko Samui-LHR London Heathrow

17h 30m2 stops Phuket City Doha Hamad Intl

14:45 - 14:45LHR London Heathrow-USM Ko Samui

18h 00m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

£893Multiple Airlines

Wed, 7 Oct - Wed, 14 Oct

13:50 - 06:55USM Ko Samui-LHR London Heathrow

23h 05m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

21:20 - 19:50LHR London Heathrow-USM Ko Samui

15h 30m1 stop Bangkok Suvarnabhumi

£935Multiple Airlines

Tue, 20 Oct - Tue, 27 Oct

13:25 - 08:00USM Ko Samui-LHR London Heathrow

25h 35m2 stops Singapore Changi Doha Hamad Intl

08:05 - 17:40LHR London Heathrow-USM Ko Samui

26h 35m2 stops Doha Hamad Intl Bangkok Suvarnabhumi

£937Qatar Airways

Wed, 24 Feb - Sun, 28 Feb

15:35 - 05:55USM Ko Samui-LHR London Heathrow

21h 20m2 stops Bangkok Suvarnabhumi Muscat Seeb

08:45 - 10:35LHR London Heathrow-USM Ko Samui

18h 50m2 stops New Delhi Indira Gandhi Intl Bangkok Suvarnabhumi

£947Multiple Airlines

Fri, 26 Feb - Sun, 28 Feb

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EVA Air flights from Ko Samui to London Heathrow Airport

Our best EVA Air deals on Ko Samui to London Heathrow Airport flight tickets

EVA Air

15 Sept

USM09:15Ko Samui

16h 05m

1 stop

LHR19:20London Heathrow

6 Oct

LHR21:35London Heathrow

18h 00m

1 stop

USM21:35Ko Samui

£995

EVA Air

15 Sept

USM09:15Ko Samui

16h 05m

1 stop

LHR19:20London Heathrow

19 Sept

LHR21:35London Heathrow

14h 55m

1 stop

USM18:30Ko Samui

£1,003

EVA Air

15 Sept

USM09:15Ko Samui

16h 05m

1 stop

LHR19:20London Heathrow

6 Oct

LHR21:35London Heathrow

18h 00m

1 stop

USM21:35Ko Samui

£1,006

Qatar Airways flights from Ko Samui to London Heathrow Airport

Our best Qatar Airways deals on Ko Samui to London Heathrow Airport flight tickets

Qatar Airways

15 Sept

USM19:00Ko Samui

19h 00m

2 stops

LHR08:00London Heathrow

6 Oct

LHR16:00London Heathrow

17h 45m

2 stops

USM15:45Ko Samui

£888

Qatar Airways

15 Sept

USM17:55Ko Samui

20h 05m

2 stops

LHR08:00London Heathrow

6 Oct

LHR09:30London Heathrow

19h 45m

2 stops

USM11:15Ko Samui

£896

Qatar Airways

15 Sept

USM19:00Ko Samui

19h 00m

2 stops

LHR08:00London Heathrow

6 Oct

LHR16:00London Heathrow

17h 45m

2 stops

USM15:45Ko Samui

£897

momondo Fare Finder

Use the filters below to find and compare flights from Ko Samui to London Heathrow Airport 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

Tue 20/10

06:00-07:30

2 stops31h 30m

London Heathrow

Tue 27/10

20:30-07:10

2 stops27h 40m

£763

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 15/12

19:00-11:30

2 stops23h 30m

London Heathrow

Fri 15/1

19:25-19:50

2 stops17h 25m

£776

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 19/10

14:00-10:15

2 stops26h 15m

London Heathrow

Mon 26/10

19:20-10:40

2 stops32h 20m

£793

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sat 27/2

07:55-07:30

2 stops30h 35m

London Heathrow

Sun 28/2

14:15-20:25

2 stops23h 10m

£852

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 19/10

11:25-15:05

2 stops33h 40m

London Heathrow

Mon 26/10

13:55-08:10

3 stops35h 15m

£859

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 15/12

07:00-19:35

1 stop19h 35m

London Heathrow

Fri 15/1

17:45-21:20

2 stops20h 35m

£884

Fastest return journey

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Wed 7/10

19:00-06:30

2 stops17h 30m

London Heathrow

Wed 14/10

14:45-14:45

2 stops18h 00m

£893

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 20/10

13:50-06:55

2 stops23h 05m

London Heathrow

Tue 27/10

21:20-19:50

1 stop15h 30m

£935

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Wed 24/2

13:25-08:00

2 stops25h 35m

London Heathrow

Sun 28/2

08:05-17:40

2 stops26h 35m

£937

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Fri 26/2

15:35-05:55

2 stops21h 20m

London Heathrow

Sun 28/2

08:45-10:35

2 stops18h 50m

£947

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 Heathrow Airport

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

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

You could potentially save up to 3% on your flight if you consider stops on a Ko Samui to London Heathrow Airport flight.

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

When to book flights from Ko Samui to London Heathrow Airport

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

Estimated return price

Cheap Ko Samui to London Heathrow Airport (USM to LHR) flight deals and tips

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

Best price found	£277
Fastest flight time	19h 30m
Direct flights	None

The best one-way flight to London Heathrow Airport from Ko Samui in the past 72 hours is £277. The best return flight deal from Ko Samui to London Heathrow Airport found on momondo in the last 72 hours is £763.

The fastest flight from Ko Samui to London Heathrow Airport takes 19h 30m

There are no direct flights from Ko Samui to London Heathrow Airport. There are no popular flight routes from Ko Samui to London Heathrow Airport.

Search flight deals

Frequently asked questions about flying from Ko Samui to London Heathrow Airport

How far is Ko Samui to London Heathrow by plane?
The straight-line distance from Ko Samui to London Heathrow is 6145.4 mi. Typically, this will take 19h 30m by plane in normal conditions.
When did momondo last update prices for flights from Ko Samui Airport to London Heathrow Airport?
Prices for flights from Ko Samui Airport to London Heathrow Airport are refreshed on a daily basis.
How old do you have to be to fly from Ko Samui Airport to London Heathrow Airport?
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 Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ko Samui to London. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to London from Ko Samui with this policy.

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

Once you have performed a search for Ko Samui to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to London from Ko Samui are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.