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

Emirates and Oman Air 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.

£327 Cheap Flights from Ko Samui to London Heathrow Airport in 2026

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Find the cheapest flights from Ko Samui to London

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

08:00 - 07:00

USM

LHR

29h 00m

2 stops

16:15 - 21:35

LHR

USM

23h 20m

2 stops

£735Multiple Airlines

Sat, 6 Jun - Sat, 13 Jun

08:40 - 06:55

USM

LHR

28h 15m

2 stops

09:30 - 13:55

LHR

USM

22h 25m

2 stops

£745Multiple Airlines

Sun, 7 Jun - Sun, 14 Jun

08:40 - 07:00

USM

LHR

28h 20m

3 stops

09:30 - 17:20

LHR

USM

25h 50m

3 stops

£760Multiple Airlines

Sat, 6 Jun - Sat, 13 Jun

08:00 - 07:00

USM

LHR

29h 00m

2 stops

14:45 - 18:00

LHR

USM

21h 15m

2 stops

£761Multiple Airlines

Sat, 9 May - Sat, 16 May

17:55 - 15:05

USM

LHR

27h 10m

2 stops

12:30 - 17:05

LHR

USM

22h 35m

2 stops

£782Multiple Airlines

Fri, 15 May - Sun, 17 May

08:00 - 12:45

USM

LHR

34h 45m

2 stops

14:45 - 16:55

LHR

USM

20h 10m

2 stops

£788Multiple Airlines

Mon, 1 Jun - Sun, 28 Jun

17:25 - 06:55

USM

LHR

19h 30m

2 stops

21:45 - 07:10

LHR

USM

27h 25m

2 stops

£840Multiple Airlines

Mon, 11 May - Mon, 18 May

08:40 - 07:00

USM

LHR

28h 20m

3 stops

21:45 - 21:35

LHR

USM

17h 50m

2 stops

£858Multiple Airlines

Fri, 15 May - Sun, 17 May

08:00 - 12:45

USM

LHR

34h 45m

2 stops

09:30 - 08:15

LHR

USM

40h 45m

3 stops

£864Multiple Airlines

Mon, 1 Jun - Sun, 28 Jun

15:20 - 06:30

USM

LHR

21h 10m

2 stops

20:50 - 20:50

LHR

USM

18h 00m

2 stops

£884Oman Air

Thu, 7 May - Tue, 12 May

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

7 May

USM14:35Ko Samui

21h 55m

2 stops

LHR06:30London Heathrow

13 May

LHR20:50London Heathrow

17h 40m

2 stops

USM20:30Ko Samui

£884

Oman Air

7 May

USM15:50Ko Samui

20h 40m

2 stops

LHR06:30London Heathrow

9 May

LHR20:50London Heathrow

17h 40m

2 stops

USM20:30Ko Samui

£921

Oman Air

1 May

USM08:00Ko Samui

28h 30m

2 stops

LHR06:30London Heathrow

10 May

LHR20:50London Heathrow

17h 40m

2 stops

USM20:30Ko Samui

£923

Qatar Airways flights from Ko Samui to London Heathrow Airport

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

Qatar Airways

1 May

USM17:55Ko Samui

18h 30m

2 stops

LHR06:25London Heathrow

11 May

LHR15:35London Heathrow

20h 25m

2 stops

USM18:00Ko Samui

£905

Qatar Airways

7 May

USM17:55Ko Samui

18h 30m

2 stops

LHR06:25London Heathrow

11 May

LHR15:35London Heathrow

20h 25m

2 stops

USM18:00Ko Samui

£906

Qatar Airways

3 May

USM17:55Ko Samui

20h 05m

2 stops

LHR08:00London Heathrow

8 May

LHR16:00London Heathrow

20h 00m

2 stops

USM18:00Ko Samui

£924

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 - LHR

USMLHR

Ko Samui

Sat 6/6

08:00-07:00

2 stops29h 00m

London Heathrow

Sat 13/6

16:15-21:35

2 stops23h 20m

£735

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sun 7/6

08:40-06:55

2 stops28h 15m

London Heathrow

Sun 14/6

09:30-13:55

2 stops22h 25m

£745

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sat 6/6

08:40-07:00

3 stops28h 20m

London Heathrow

Sat 13/6

09:30-17:20

3 stops25h 50m

£760

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sat 9/5

08:00-07:00

2 stops29h 00m

London Heathrow

Sat 16/5

14:45-18:00

2 stops21h 15m

£761

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 15/5

17:55-15:05

2 stops27h 10m

London Heathrow

Sun 17/5

12:30-17:05

2 stops22h 35m

£782

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 1/6

08:00-12:45

2 stops34h 45m

London Heathrow

Sun 28/6

14:45-16:55

2 stops20h 10m

£788

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 11/5

17:25-06:55

2 stops19h 30m

London Heathrow

Mon 18/5

21:45-07:10

2 stops27h 25m

£840

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 15/5

08:40-07:00

3 stops28h 20m

London Heathrow

Sun 17/5

21:45-21:35

2 stops17h 50m

£858

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 1/6

08:00-12:45

2 stops34h 45m

London Heathrow

Sun 28/6

09:30-08:15

3 stops40h 45m

£864

Fastest return journey

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 7/5

15:20-06:30

2 stops21h 10m

London Heathrow

Tue 12/5

20:50-20:50

2 stops18h 00m

£884

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 4% 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	20h 05m
Direct flights	None

The fastest flight from Ko Samui to London Heathrow Airport takes 20h 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.

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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 20h 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 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.