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

Oman Air is the most popular carrier 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.

£301 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 - 12:45USM Ko Samui-LHR London Heathrow

34h 05m2 stops Singapore Changi Abu Dhabi Zayed Intl

09:30 - 17:20LHR London Heathrow-USM Ko Samui

25h 50m2 stops Abu Dhabi Zayed Intl Singapore Changi

£731Multiple Airlines

Sun, 20 Sep - Sun, 4 Oct

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

34h 00m2 stops Singapore Changi Abu Dhabi Zayed Intl

09:30 - 17:20LHR London Heathrow-USM Ko Samui

25h 50m2 stops Abu Dhabi Zayed Intl Singapore Changi

£745Multiple Airlines

Tue, 15 Sep - Tue, 22 Sep

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

31h 30m2 stops Bangkok Suvarnabhumi Riyadh King Khaled Intl

16:15 - 20:50LHR London Heathrow-USM Ko Samui

22h 35m2 stops Riyadh King Khaled Intl Bangkok Suvarnabhumi

£761Multiple Airlines

Sun, 20 Sep - Sat, 3 Oct

11:05 - 12:45USM Ko Samui-LHR London Heathrow

31h 40m2 stops Singapore Changi Abu Dhabi Zayed Intl

09:30 - 18:50LHR London Heathrow-USM Ko Samui

27h 20m2 stops Abu Dhabi Zayed Intl Singapore Changi

£780Multiple Airlines

Wed, 16 Sep - Wed, 23 Sep

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

£790Multiple Airlines

Tue, 10 Nov - Mon, 16 Nov

18:30 - 11:30USM Ko Samui-LHR London Heathrow

24h 00m2 stops Bangkok Suvarnabhumi New Delhi Indira Gandhi Intl

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

20h 55m2 stops Zurich Singapore Changi

£795Multiple Airlines

Tue, 10 Nov - Mon, 16 Nov

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

29h 20m2 stops Singapore Changi Doha Hamad Intl

10:00 - 13:45LHR London Heathrow-USM Ko Samui

21h 45m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

£807Multiple Airlines

Sat, 19 Sep - Mon, 21 Sep

15:20 - 06:55USM Ko Samui-LHR London Heathrow

21h 35m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

22:05 - 14:45LHR London Heathrow-USM Ko Samui

34h 40m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

£818Gulf Air

Tue, 15 Sep - Tue, 6 Oct

08:40 - 06:25USM Ko Samui-LHR London Heathrow

27h 45m2 stops Singapore Changi Doha Hamad Intl

17:00 - 18:50LHR London Heathrow-USM Ko Samui

19h 50m2 stops Doha Hamad Intl Singapore Changi

£821Multiple Airlines

Sun, 20 Sep - Sat, 3 Oct

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

25h 55m2 stops Singapore Changi Abu Dhabi Zayed Intl

09:30 - 14:45LHR London Heathrow-USM Ko Samui

23h 15m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

£829Multiple Airlines

Wed, 30 Sep - Wed, 7 Oct

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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

26h 00m

2 stops

LHR12:25London Heathrow

22 Sept

LHR14:25London Heathrow

24h 45m

2 stops

USM21:10Ko Samui

£935

Emirates

28 Aug

USM19:50Ko Samui

22h 35m

2 stops

LHR12:25London Heathrow

20 Dec

LHR22:00London Heathrow

29h 35m

2 stops

USM10:35Ko Samui

£1,882

Emirates

26 Aug

USM16:25Ko Samui

20h 40m

2 stops

LHR07:05London Heathrow

20 Dec

LHR09:10London Heathrow

28h 55m

2 stops

USM21:05Ko Samui

£2,403

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

USM13:50Ko Samui

35h 20m

2 stops

LHR19:10London Heathrow

6 Oct

LHR20:50London Heathrow

33h 05m

2 stops

USM11:55Ko Samui

£837

Oman Air

15 Sept

USM13:50Ko Samui

35h 20m

2 stops

LHR19:10London Heathrow

6 Oct

LHR20:50London Heathrow

33h 05m

2 stops

USM11:55Ko Samui

£839

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

£851

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

Sun 20/9

08:40-12:45

2 stops34h 05m

London Heathrow

Sun 4/10

09:30-17:20

2 stops25h 50m

£731

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 15/9

11:05-15:05

2 stops34h 00m

London Heathrow

Tue 22/9

09:30-17:20

2 stops25h 50m

£745

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sun 20/9

06:00-07:30

2 stops31h 30m

London Heathrow

Sat 3/10

16:15-20:50

2 stops22h 35m

£761

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Wed 16/9

11:05-12:45

2 stops31h 40m

London Heathrow

Wed 23/9

09:30-18:50

2 stops27h 20m

£780

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

£790

Fastest return journey

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 10/11

18:30-11:30

2 stops24h 00m

London Heathrow

Mon 16/11

17:10-21:05

2 stops20h 55m

£795

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sat 19/9

08:40-08:00

2 stops29h 20m

London Heathrow

Mon 21/9

10:00-13:45

2 stops21h 45m

£807

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 15/9

15:20-06:55

2 stops21h 35m

London Heathrow

Tue 6/10

22:05-14:45

2 stops34h 40m

£818

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sun 20/9

08:40-06:25

2 stops27h 45m

London Heathrow

Sat 3/10

17:00-18:50

2 stops19h 50m

£821

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Wed 30/9

11:05-07:00

2 stops25h 55m

London Heathrow

Wed 7/10

09:30-14:45

2 stops23h 15m

£829

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

Best price found	£301
Fastest flight time	30h 40m
Direct flights	None

The best one-way flight to London Heathrow Airport from Ko Samui in the past 72 hours is £301. The best return flight deal from Ko Samui to London Heathrow Airport found on momondo in the last 72 hours is £731.

The fastest flight from Ko Samui to London Heathrow Airport takes 30h 40m

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 30h 40m 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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Poole

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Hayes

Guildford

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.