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.

£273 Cheap Flights from Ko Samui to London Heathrow Airport in 2026/27

Find the cheapest flights from Ko Samui to London

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

18:15 - 18:45USM Ko Samui-LHR London Heathrow

30h 30m3 stops Singapore Changi Kuala Lumpur Intl Abu Dhabi Zayed Intl

09:30 - 15:40LHR London Heathrow-USM Ko Samui

23h 10m2 stops Riyadh King Khaled Intl Bangkok Suvarnabhumi

£630Multiple Airlines

Mon, 19 Oct - Mon, 2 Nov

19:45 - 17:45USM Ko Samui-LHR London Heathrow

28h 00m2 stops Bangkok Suvarnabhumi Mumbai Chhatrapati Shivaji Intl

09:30 - 15:40LHR London Heathrow-USM Ko Samui

23h 10m2 stops Riyadh King Khaled Intl Bangkok Suvarnabhumi

£660Multiple Airlines

Mon, 19 Oct - Mon, 2 Nov

08:40 - 07:00USM Ko Samui-LHR London Heathrow

28h 20m3 stops Singapore Changi Kuala Lumpur Intl Abu Dhabi Zayed Intl

09:30 - 15:40LHR London Heathrow-USM Ko Samui

23h 10m2 stops Riyadh King Khaled Intl Bangkok Suvarnabhumi

£675Multiple Airlines

Mon, 19 Oct - Mon, 2 Nov

19:00 - 15:05USM Ko Samui-LHR London Heathrow

26h 05m2 stops Phuket City Abu Dhabi Zayed Intl

09:30 - 15:35LHR London Heathrow-USM Ko Samui

23h 05m2 stops Riyadh King Khaled Intl Bangkok Suvarnabhumi

£715Multiple Airlines

Mon, 19 Oct - Mon, 2 Nov

17:55 - 11:30USM Ko Samui-LHR London Heathrow

23h 35m2 stops Phuket City New Delhi Indira Gandhi Intl

08:45 - 07:35LHR London Heathrow-USM Ko Samui

39h 50m2 stops New Delhi Indira Gandhi Intl Bangkok Suvarnabhumi

£728Multiple Airlines

Mon, 19 Oct - Mon, 2 Nov

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

22h 30m2 stops Phuket City New Delhi Indira Gandhi Intl

21:00 - 10:40LHR London Heathrow-USM Ko Samui

30h 40m2 stops Shanghai Pu Dong Phuket City

£749Multiple Airlines

Mon, 19 Oct - Mon, 2 Nov

11:05 - 07:00USM Ko Samui-LHR London Heathrow

25h 55m3 stops Singapore Changi Kuala Lumpur Intl Abu Dhabi Zayed Intl

14:45 - 07:45LHR London Heathrow-USM Ko Samui

35h 00m3 stops Abu Dhabi Zayed Intl Kuala Lumpur Intl Singapore Changi

£796Multiple Airlines

Thu, 8 Oct - Thu, 22 Oct

19:45 - 18:45USM Ko Samui-LHR London Heathrow

29h 00m3 stops Singapore Changi Kuala Lumpur Intl Abu Dhabi Zayed Intl

14:45 - 07:45LHR London Heathrow-USM Ko Samui

35h 00m3 stops Abu Dhabi Zayed Intl Kuala Lumpur Intl Singapore Changi

£799Multiple Airlines

Thu, 8 Oct - Thu, 22 Oct

20:30 - 06:40USM Ko Samui-LHR London Heathrow

17h 10m1 stop Bangkok Suvarnabhumi

21:10 - 07:45LHR London Heathrow-USM Ko Samui

27h 35m2 stops Shenzhen Bangkok Suvarnabhumi

£827Multiple Airlines

Sun, 1 Nov - Sun, 8 Nov

07:50 - 19:15USM Ko Samui-LHR London Heathrow

17h 25m1 stop Bangkok Suvarnabhumi

21:10 - 19:50LHR London Heathrow-USM Ko Samui

39h 40m2 stops Shenzhen Bangkok Suvarnabhumi

£830Multiple Airlines

Mon, 19 Oct - Mon, 2 Nov

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Thai Airways flights from Ko Samui to London Heathrow Airport

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

Thai Airways

19 Oct

USM07:50Ko Samui

17h 25m

1 stop

LHR19:15London Heathrow

2 Nov

LHR21:35London Heathrow

15h 15m

1 stop

USM19:50Ko Samui

£933

Thai Airways

19 Oct

USM07:50Ko Samui

17h 25m

1 stop

LHR19:15London Heathrow

2 Nov

LHR21:35London Heathrow

15h 15m

1 stop

USM19:50Ko Samui

£940

Thai Airways

1 Nov

USM18:40Ko Samui

19h 00m

1 stop

LHR06:40London Heathrow

8 Nov

LHR11:50London Heathrow

15h 45m

1 stop

USM10:35Ko Samui

£941

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

12 Oct

USM08:45Ko Samui

16h 35m

1 stop

LHR19:20London Heathrow

19 Oct

LHR21:35London Heathrow

16h 55m

1 stop

USM20:30Ko Samui

£1,019

EVA Air

22 Sept

USM21:00Ko Samui

28h 20m

1 stop

LHR19:20London Heathrow

26 Sept

LHR21:35London Heathrow

14h 55m

1 stop

USM18:30Ko Samui

£1,022

EVA Air

22 Sept

USM21:00Ko Samui

28h 20m

1 stop

LHR19:20London Heathrow

26 Sept

LHR21:35London Heathrow

14h 55m

1 stop

USM18:30Ko Samui

£1,024

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

Mon 19/10

18:15-18:45

3 stops30h 30m

London Heathrow

Mon 2/11

09:30-15:40

2 stops23h 10m

£630

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 19/10

19:45-17:45

2 stops28h 00m

London Heathrow

Mon 2/11

09:30-15:40

2 stops23h 10m

£660

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 19/10

08:40-07:00

3 stops28h 20m

London Heathrow

Mon 2/11

09:30-15:40

2 stops23h 10m

£675

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 19/10

19:00-15:05

2 stops26h 05m

London Heathrow

Mon 2/11

09:30-15:35

2 stops23h 05m

£715

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 19/10

17:55-11:30

2 stops23h 35m

London Heathrow

Mon 2/11

08:45-07:35

2 stops39h 50m

£728

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 19/10

19:00-11:30

2 stops22h 30m

London Heathrow

Mon 2/11

21:00-10:40

2 stops30h 40m

£749

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Thu 8/10

11:05-07:00

3 stops25h 55m

London Heathrow

Thu 22/10

14:45-07:45

3 stops35h 00m

£796

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Thu 8/10

19:45-18:45

3 stops29h 00m

London Heathrow

Thu 22/10

14:45-07:45

3 stops35h 00m

£799

Fastest return journey

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sun 1/11

20:30-06:40

1 stop17h 10m

London Heathrow

Sun 8/11

21:10-07:45

2 stops27h 35m

£827

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 19/10

07:50-19:15

1 stop17h 25m

London Heathrow

Mon 2/11

21:10-19:50

2 stops39h 40m

£830

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	£273
Fastest flight time	21h 05m
Direct flights	None

The best one-way flight to London Heathrow Airport from Ko Samui in the past 72 hours is £273. The best return flight deal from Ko Samui to London Heathrow Airport found on momondo in the last 72 hours is £630.

The fastest flight from Ko Samui to London Heathrow Airport takes 21h 05m

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 21h 05m 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.