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.

£275 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.

08:40 - 06:55USM Ko Samui-LHR London Heathrow

28h 15m2 stops Singapore Changi Manama Bahrain Intl

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

26h 50m2 stops Manama Bahrain Intl Singapore Changi

£730Multiple Airlines

Mon, 12 Oct - Mon, 19 Oct

11:25 - 07:00USM Ko Samui-LHR London Heathrow

25h 35m2 stops Phuket City Abu Dhabi Zayed Intl

13:50 - 18:30LHR London Heathrow-USM Ko Samui

22h 40m2 stops Mumbai Chhatrapati Shivaji Intl Bangkok Suvarnabhumi

£736Multiple Airlines

Thu, 24 Sep - Thu, 8 Oct

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

28h 20m3 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

£741Multiple Airlines

Mon, 12 Oct - Mon, 19 Oct

11:25 - 07:00USM Ko Samui-LHR London Heathrow

25h 35m2 stops Phuket City Abu Dhabi Zayed Intl

13:50 - 18:30LHR London Heathrow-USM Ko Samui

22h 40m2 stops Mumbai Chhatrapati Shivaji Intl Bangkok Suvarnabhumi

£745Multiple Airlines

Thu, 24 Sep - Thu, 8 Oct

11:25 - 07:00USM Ko Samui-LHR London Heathrow

25h 35m2 stops Phuket City Abu Dhabi Zayed Intl

16:35 - 20:25LHR London Heathrow-USM Ko Samui

21h 50m3 stops Athens Eleftherios V. Sharjah Phuket City

£782Multiple Airlines

Thu, 24 Sep - Sat, 10 Oct

11:25 - 07:00USM Ko Samui-LHR London Heathrow

25h 35m2 stops Phuket City Abu Dhabi Zayed Intl

21:05 - 08:15LHR London Heathrow-USM Ko Samui

29h 10m2 stops Mumbai Chhatrapati Shivaji Intl Bangkok Suvarnabhumi

£785Multiple Airlines

Thu, 24 Sep - Sat, 10 Oct

06:00 - 10:15USM Ko Samui-LHR London Heathrow

34h 15m2 stops Bangkok Suvarnabhumi Mumbai Chhatrapati Shivaji Intl

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

18h 00m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

£799Multiple Airlines

Mon, 12 Oct - Mon, 19 Oct

11:45 - 19:10USM Ko Samui-LHR London Heathrow

37h 25m2 stops Bangkok Suvarnabhumi Muscat Seeb

20:50 - 11:55LHR London Heathrow-USM Ko Samui

33h 05m2 stops Muscat Seeb Phuket City

£836Oman Air

Tue, 15 Sep - Tue, 6 Oct

15:25 - 19:10USM Ko Samui-LHR London Heathrow

33h 45m2 stops Bangkok Suvarnabhumi Muscat Seeb

20:50 - 10:30LHR London Heathrow-USM Ko Samui

31h 40m2 stops Muscat Seeb Phuket City

£876Oman Air

Tue, 15 Sep - Tue, 6 Oct

06:00 - 19:15USM Ko Samui-LHR London Heathrow

19h 15m1 stop Bangkok Suvarnabhumi

12:30 - 09:20LHR London Heathrow-USM Ko Samui

14h 50m1 stop Bangkok Suvarnabhumi

£917Thai Airways

Mon, 12 Oct - Mon, 19 Oct

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Oman Air flights from Ko Samui to London Heathrow Airport

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

Oman Air

15 Sept

USM11:45Ko Samui

37h 25m

2 stops

LHR19:10London Heathrow

6 Oct

LHR20:50London Heathrow

33h 05m

2 stops

USM11:55Ko Samui

£836

Oman Air

15 Sept

USM15:25Ko Samui

33h 45m

2 stops

LHR19:10London Heathrow

6 Oct

LHR20:50London Heathrow

31h 40m

2 stops

USM10:30Ko Samui

£876

Emirates flights from Ko Samui to London Heathrow Airport

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

Emirates

15 Sept

USM16:25Ko Samui

20h 40m

2 stops

LHR07:05London Heathrow

6 Oct

LHR14:25London Heathrow

24h 45m

2 stops

USM21:10Ko Samui

£933

Emirates

15 Sept

USM16:25Ko Samui

20h 40m

2 stops

LHR07:05London Heathrow

6 Oct

LHR14:25London Heathrow

24h 45m

2 stops

USM21:10Ko Samui

£937

Emirates

15 Sept

USM16:25Ko Samui

20h 40m

2 stops

LHR07:05London Heathrow

6 Oct

LHR14:25London Heathrow

24h 45m

2 stops

USM21:10Ko Samui

£944

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 12/10

08:40-06:55

2 stops28h 15m

London Heathrow

Mon 19/10

10:00-18:50

2 stops26h 50m

£730

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Thu 24/9

11:25-07:00

2 stops25h 35m

London Heathrow

Thu 8/10

13:50-18:30

2 stops22h 40m

£736

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 12/10

08:40-07:00

3 stops28h 20m

London Heathrow

Mon 19/10

21:45-10:10

3 stops30h 25m

£741

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Thu 24/9

11:25-07:00

2 stops25h 35m

London Heathrow

Thu 8/10

13:50-18:30

2 stops22h 40m

£745

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Thu 24/9

11:25-07:00

2 stops25h 35m

London Heathrow

Sat 10/10

16:35-20:25

3 stops21h 50m

£782

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Thu 24/9

11:25-07:00

2 stops25h 35m

London Heathrow

Sat 10/10

21:05-08:15

2 stops29h 10m

£785

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 12/10

06:00-10:15

2 stops34h 15m

London Heathrow

Mon 19/10

14:45-14:45

2 stops18h 00m

£799

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 15/9

11:45-19:10

2 stops37h 25m

London Heathrow

Tue 6/10

20:50-11:55

2 stops33h 05m

£836

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 15/9

15:25-19:10

2 stops33h 45m

London Heathrow

Tue 6/10

20:50-10:30

2 stops31h 40m

£876

Fastest return journey

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 12/10

06:00-19:15

1 stop19h 15m

London Heathrow

Mon 19/10

12:30-09:20

1 stop14h 50m

£917

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 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	£275
Fastest flight time	35h 30m
Direct flights	None

The best one-way flight to London Heathrow Airport from Ko Samui in the past 72 hours is £275. The best return flight deal from Ko Samui to London Heathrow Airport found on momondo in the last 72 hours is £730.

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