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.

£296 Cheap Flights from Ko Samui to London Heathrow Airport in 2026/27

Find the cheapest flights from Ko Samui to London

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

16:30 - 11:05USM Ko Samui-LHR London Heathrow

25h 35m2 stops Bangkok Suvarnabhumi Mumbai Chhatrapati Shivaji Intl

21:05 - 07:45LHR London Heathrow-USM Ko Samui

27h 40m2 stops New Delhi Indira Gandhi Intl Bangkok Suvarnabhumi

£677Multiple Airlines

Mon, 30 Nov - Mon, 7 Dec

16:30 - 11:05USM Ko Samui-LHR London Heathrow

25h 35m2 stops Bangkok Suvarnabhumi Mumbai Chhatrapati Shivaji Intl

20:30 - 07:45LHR London Heathrow-USM Ko Samui

28h 15m2 stops Mumbai Chhatrapati Shivaji Intl Bangkok Suvarnabhumi

£680Multiple Airlines

Mon, 9 Nov - Tue, 8 Dec

10:00 - 11:30USM Ko Samui-LHR London Heathrow

32h 30m2 stops Bangkok Suvarnabhumi New Delhi Indira Gandhi Intl

22:00 - 07:45LHR London Heathrow-USM Ko Samui

26h 45m2 stops New Delhi Indira Gandhi Intl Bangkok Suvarnabhumi

£685Multiple Airlines

Thu, 17 Dec - Sat, 16 Jan

14:15 - 11:05USM Ko Samui-LHR London Heathrow

27h 50m2 stops Bangkok Suvarnabhumi Mumbai Chhatrapati Shivaji Intl

12:30 - 20:25LHR London Heathrow-USM Ko Samui

24h 55m2 stops Xiamen Gaoqi Intl Bangkok Suvarnabhumi

£712Multiple Airlines

Fri, 20 Nov - Fri, 27 Nov

12:00 - 14:30USM Ko Samui-LHR London Heathrow

33h 30m2 stops Singapore Changi Abu Dhabi Zayed Intl

08:40 - 18:55LHR London Heathrow-USM Ko Samui

27h 15m2 stops Abu Dhabi Zayed Intl Singapore Changi

£738Multiple Airlines

Thu, 14 Jan - Sun, 17 Jan

07:00 - 21:40USM Ko Samui-LHR London Heathrow

21h 40m2 stops Bangkok Suvarnabhumi Kastrup Copenhagen

15:45 - 20:50LHR London Heathrow-USM Ko Samui

22h 05m3 stops Amsterdam Schiphol Abu Dhabi Zayed Intl Phuket City

£747Multiple Airlines

Mon, 9 Nov - Tue, 8 Dec

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

29h 00m2 stops Bangkok Suvarnabhumi Shenzhen

16:05 - 20:25LHR London Heathrow-USM Ko Samui

21h 20m2 stops Xiamen Gaoqi Intl Bangkok Suvarnabhumi

£759Multiple Airlines

Sun, 29 Nov - Sun, 6 Dec

12:00 - 05:55USM Ko Samui-LHR London Heathrow

24h 55m3 stops Singapore Changi Kuala Lumpur Intl Muscat Seeb

12:30 - 20:25LHR London Heathrow-USM Ko Samui

24h 55m2 stops Xiamen Gaoqi Intl Bangkok Suvarnabhumi

£773Multiple Airlines

Fri, 20 Nov - Fri, 27 Nov

07:55 - 11:05USM Ko Samui-LHR London Heathrow

34h 10m2 stops Bangkok Suvarnabhumi Mumbai Chhatrapati Shivaji Intl

21:00 - 08:40LHR London Heathrow-USM Ko Samui

28h 40m2 stops Shanghai Pu Dong Bangkok Suvarnabhumi

£785Multiple Airlines

Mon, 21 Dec - Wed, 6 Jan

07:55 - 11:05USM Ko Samui-LHR London Heathrow

34h 10m2 stops Bangkok Suvarnabhumi Mumbai Chhatrapati Shivaji Intl

21:00 - 08:40LHR London Heathrow-USM Ko Samui

28h 40m2 stops Shanghai Pu Dong Bangkok Suvarnabhumi

£830Multiple Airlines

Sun, 20 Dec - Wed, 6 Jan

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Etihad Airways flights from Ko Samui to London Heathrow Airport

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

Etihad Airways

5 Nov

USM21:10Ko Samui

21h 55m

2 stops

LHR12:05London Heathrow

9 Nov

LHR13:55London Heathrow

20h 35m

2 stops

USM17:30Ko Samui

£882

Etihad Airways

5 Nov

USM14:05Ko Samui

23h 35m

2 stops

LHR06:40London Heathrow

9 Nov

LHR13:55London Heathrow

21h 30m

2 stops

USM18:25Ko Samui

£885

Etihad Airways

5 Nov

USM14:05Ko Samui

23h 35m

2 stops

LHR06:40London Heathrow

9 Nov

LHR13:55London Heathrow

21h 30m

2 stops

USM18:25Ko Samui

£887

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

5 Nov

USM07:00Ko Samui

19h 05m

1 stop

LHR19:05London Heathrow

9 Nov

LHR21:20London Heathrow

15h 30m

1 stop

USM19:50Ko Samui

£1,005

EVA Air

5 Nov

USM07:55Ko Samui

18h 10m

1 stop

LHR19:05London Heathrow

9 Nov

LHR21:20London Heathrow

16h 05m

1 stop

USM20:25Ko Samui

£1,008

EVA Air

5 Nov

USM07:00Ko Samui

19h 05m

1 stop

LHR19:05London Heathrow

9 Nov

LHR21:20London Heathrow

15h 30m

1 stop

USM19:50Ko Samui

£1,011

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 30/11

16:30-11:05

2 stops25h 35m

London Heathrow

Mon 7/12

21:05-07:45

2 stops27h 40m

£677

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 9/11

16:30-11:05

2 stops25h 35m

London Heathrow

Tue 8/12

20:30-07:45

2 stops28h 15m

£680

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Thu 17/12

10:00-11:30

2 stops32h 30m

London Heathrow

Sat 16/1

22:00-07:45

2 stops26h 45m

£685

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Fri 20/11

14:15-11:05

2 stops27h 50m

London Heathrow

Fri 27/11

12:30-20:25

2 stops24h 55m

£712

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Thu 14/1

12:00-14:30

2 stops33h 30m

London Heathrow

Sun 17/1

08:40-18:55

2 stops27h 15m

£738

Fastest return journey

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 9/11

07:00-21:40

2 stops21h 40m

London Heathrow

Tue 8/12

15:45-20:50

3 stops22h 05m

£747

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sun 29/11

21:10-19:10

2 stops29h 00m

London Heathrow

Sun 6/12

16:05-20:25

2 stops21h 20m

£759

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Fri 20/11

12:00-05:55

3 stops24h 55m

London Heathrow

Fri 27/11

12:30-20:25

2 stops24h 55m

£773

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 21/12

07:55-11:05

2 stops34h 10m

London Heathrow

Wed 6/1

21:00-08:40

2 stops28h 40m

£785

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sun 20/12

07:55-11:05

2 stops34h 10m

London Heathrow

Wed 6/1

21:00-08:40

2 stops28h 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 19% 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	£296
Fastest flight time	23h 35m
Direct flights	None

The best one-way flight to London Heathrow Airport from Ko Samui in the past 72 hours is £296. The best return flight deal from Ko Samui to London Heathrow Airport found on momondo in the last 72 hours is £677.

The fastest flight from Ko Samui to London Heathrow Airport takes 23h 35m

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 23h 35m 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.