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

Qatar Airways and Thai Airways are the most popular carriers operating from Ko Samui to London Heathrow

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.

£300 Cheap Flights from Ko Samui to London Heathrow Airport in 2026

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.

17:25 - 06:55USM Ko Samui-LHR London Heathrow

19h 30m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

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

18h 00m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

£778Multiple Airlines

Sun, 27 Sep - Sun, 4 Oct

17:25 - 06:55USM Ko Samui-LHR London Heathrow

19h 30m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

21:20 - 08:25LHR London Heathrow-USM Ko Samui

29h 05m2 stops Shanghai Pu Dong Phuket City

£787Multiple Airlines

Tue, 8 Sep - Wed, 16 Sep

15:30 - 06:55USM Ko Samui-LHR London Heathrow

21h 25m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

10:00 - 18:50LHR London Heathrow-USM Ko Samui

26h 50m2 stops Manama Bahrain Intl Singapore Changi

£796Multiple Airlines

Mon, 28 Sep - Mon, 5 Oct

14:30 - 06:35USM Ko Samui-LHR London Heathrow

23h 05m2 stops Bangkok Suvarnabhumi New Delhi Indira Gandhi Intl

17:10 - 21:05LHR London Heathrow-USM Ko Samui

20h 55m2 stops Zurich Singapore Changi

£798Multiple Airlines

Tue, 10 Nov - Mon, 16 Nov

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

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

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

30h 25m3 stops Abu Dhabi Zayed Intl Kuala Lumpur Intl Singapore Changi

£799Multiple Airlines

Mon, 28 Sep - Mon, 5 Oct

12:00 - 16:20USM Ko Samui-LHR London Heathrow

35h 20m3 stops Singapore Changi Kuala Lumpur Intl Haikou Meilan Intl

21:00 - 07:10LHR London Heathrow-USM Ko Samui

27h 10m2 stops Shanghai Pu Dong Bangkok Suvarnabhumi

£800Multiple Airlines

Tue, 10 Nov - Mon, 16 Nov

17:25 - 06:55USM Ko Samui-LHR London Heathrow

19h 30m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

10:00 - 12:45LHR London Heathrow-USM Ko Samui

20h 45m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

£813Multiple Airlines

Wed, 9 Sep - Thu, 17 Sep

15:25 - 06:55USM Ko Samui-LHR London Heathrow

21h 30m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

10:00 - 16:30LHR London Heathrow-USM Ko Samui

24h 30m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

£820Gulf Air

Tue, 15 Sep - Tue, 6 Oct

15:25 - 06:55USM Ko Samui-LHR London Heathrow

21h 30m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

22:05 - 16:50LHR London Heathrow-USM Ko Samui

36h 45m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

£821Gulf Air

Tue, 15 Sep - Tue, 6 Oct

15:25 - 06:55USM Ko Samui-LHR London Heathrow

21h 30m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

10:00 - 16:30LHR London Heathrow-USM Ko Samui

24h 30m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

£821Gulf Air

Tue, 15 Sep - Tue, 6 Oct

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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

27 Sept

USM06:00Ko Samui

19h 20m

1 stop

LHR19:20London Heathrow

4 Oct

LHR21:35London Heathrow

27h 35m

1 stop

USM07:10Ko Samui

£943

EVA Air

15 Sept

USM09:15Ko Samui

16h 05m

1 stop

LHR19:20London Heathrow

6 Oct

LHR21:35London Heathrow

16h 55m

1 stop

USM20:30Ko Samui

£986

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

£986

Gulf Air flights from Ko Samui to London Heathrow Airport

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

Gulf Air

15 Sept

USM15:25Ko Samui

21h 30m

2 stops

LHR06:55London Heathrow

6 Oct

LHR10:00London Heathrow

24h 30m

2 stops

USM16:30Ko Samui

£820

Gulf Air

15 Sept

USM15:25Ko Samui

21h 30m

2 stops

LHR06:55London Heathrow

6 Oct

LHR22:05London Heathrow

36h 45m

2 stops

USM16:50Ko Samui

£821

Gulf Air

15 Sept

USM15:25Ko Samui

21h 30m

2 stops

LHR06:55London Heathrow

6 Oct

LHR10:00London Heathrow

24h 30m

2 stops

USM16:30Ko Samui

£821

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

Fastest return journey

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sun 27/9

17:25-06:55

2 stops19h 30m

London Heathrow

Sun 4/10

14:45-14:45

2 stops18h 00m

£778

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 8/9

17:25-06:55

2 stops19h 30m

London Heathrow

Wed 16/9

21:20-08:25

2 stops29h 05m

£787

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 28/9

15:30-06:55

2 stops21h 25m

London Heathrow

Mon 5/10

10:00-18:50

2 stops26h 50m

£796

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 10/11

14:30-06:35

2 stops23h 05m

London Heathrow

Mon 16/11

17:10-21:05

2 stops20h 55m

£798

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 28/9

19:45-18:45

3 stops29h 00m

London Heathrow

Mon 5/10

21:45-10:10

3 stops30h 25m

£799

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 10/11

12:00-16:20

3 stops35h 20m

London Heathrow

Mon 16/11

21:00-07:10

2 stops27h 10m

£800

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Wed 9/9

17:25-06:55

2 stops19h 30m

London Heathrow

Thu 17/9

10:00-12:45

2 stops20h 45m

£813

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 15/9

15:25-06:55

2 stops21h 30m

London Heathrow

Tue 6/10

10:00-16:30

2 stops24h 30m

£820

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 15/9

15:25-06:55

2 stops21h 30m

London Heathrow

Tue 6/10

22:05-16:50

2 stops36h 45m

£821

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 15/9

15:25-06:55

2 stops21h 30m

London Heathrow

Tue 6/10

10:00-16:30

2 stops24h 30m

£821

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

Prices

Airlines

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

You could potentially save up to 22% 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

Fastest flight time	16h 50m
Direct flights	None

The fastest flight from Ko Samui to London Heathrow Airport takes 16h 50m

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 16h 50m 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.