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

Gulf Air, Oman Air, and Qatar 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.

£329 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

Cheap return flights

Enter your travel dates to find the best prices.

11:25 - 07:00

USM

LHR

25h 35m

2 stops

14:45 - 20:25

LHR

USM

23h 40m

2 stops

£737Multiple Airlines

Thu, 18 Jun - Sat, 27 Jun

15:25 - 15:20

USM

LHR

29h 55m

2 stops

10:00 - 12:45

LHR

USM

20h 45m

2 stops

£763Multiple Airlines

Thu, 11 Jun - Thu, 18 Jun

08:00 - 07:00

USM

LHR

29h 00m

2 stops

14:45 - 20:25

LHR

USM

23h 40m

2 stops

£788Multiple Airlines

Thu, 18 Jun - Sat, 27 Jun

17:25 - 06:55

USM

LHR

19h 30m

2 stops

14:45 - 20:50

LHR

USM

24h 05m

2 stops

£814Multiple Airlines

Mon, 22 Jun - Mon, 29 Jun

11:25 - 12:45

USM

LHR

31h 20m

2 stops

09:30 - 08:15

LHR

USM

40h 45m

3 stops

£819Multiple Airlines

Thu, 18 Jun - Sat, 27 Jun

15:25 - 15:20

USM

LHR

29h 55m

2 stops

22:05 - 14:45

LHR

USM

34h 40m

2 stops

£829Gulf Air

Tue, 15 Sep - Tue, 6 Oct

14:35 - 06:55

USM

LHR

22h 20m

2 stops

22:05 - 13:45

LHR

USM

33h 40m

2 stops

£830Gulf Air

Tue, 15 Sep - Tue, 6 Oct

13:50 - 06:55

USM

LHR

23h 05m

2 stops

22:05 - 15:10

LHR

USM

35h 05m

2 stops

£831Gulf Air

Tue, 15 Sep - Tue, 6 Oct

15:30 - 06:55

USM

LHR

21h 25m

2 stops

14:45 - 20:50

LHR

USM

24h 05m

2 stops

£848Multiple Airlines

Mon, 22 Jun - Mon, 29 Jun

13:30 - 15:20

USM

LHR

31h 50m

2 stops

14:45 - 20:30

LHR

USM

23h 45m

2 stops

£851Multiple Airlines

Fri, 11 Sep - Wed, 30 Sep

British Airways flights from Ko Samui to London Heathrow Airport

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

British Airways

15 Sept

USM16:25Ko Samui

19h 10m

1 stop

LHR05:35London Heathrow

6 Oct

LHR19:25London Heathrow

16h 50m

1 stop

USM18:15Ko Samui

£1,083

British Airways

15 Sept

USM16:25Ko Samui

19h 10m

1 stop

LHR05:35London Heathrow

6 Oct

LHR19:25London Heathrow

16h 50m

1 stop

USM18:15Ko Samui

£1,084

British Airways

15 Sept

USM16:25Ko Samui

19h 10m

1 stop

LHR05:35London Heathrow

6 Oct

LHR19:25London Heathrow

16h 50m

1 stop

USM18:15Ko Samui

£1,093

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

29h 55m

2 stops

LHR15:20London Heathrow

6 Oct

LHR22:05London Heathrow

34h 40m

2 stops

USM14:45Ko Samui

£829

Gulf Air

15 Sept

USM14:35Ko Samui

22h 20m

2 stops

LHR06:55London Heathrow

6 Oct

LHR22:05London Heathrow

33h 40m

2 stops

USM13:45Ko Samui

£830

Gulf Air

15 Sept

USM13:50Ko Samui

23h 05m

2 stops

LHR06:55London Heathrow

6 Oct

LHR22:05London Heathrow

35h 05m

2 stops

USM15:10Ko Samui

£831

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

Thu 18/6

11:25-07:00

2 stops25h 35m

London Heathrow

Sat 27/6

14:45-20:25

2 stops23h 40m

£737

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 11/6

15:25-15:20

2 stops29h 55m

London Heathrow

Thu 18/6

10:00-12:45

2 stops20h 45m

£763

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 18/6

08:00-07:00

2 stops29h 00m

London Heathrow

Sat 27/6

14:45-20:25

2 stops23h 40m

£788

Fastest return journey

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 22/6

17:25-06:55

2 stops19h 30m

London Heathrow

Mon 29/6

14:45-20:50

2 stops24h 05m

£814

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 18/6

11:25-12:45

2 stops31h 20m

London Heathrow

Sat 27/6

09:30-08:15

3 stops40h 45m

£819

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 15/9

15:25-15:20

2 stops29h 55m

London Heathrow

Tue 6/10

22:05-14:45

2 stops34h 40m

£829

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 15/9

14:35-06:55

2 stops22h 20m

London Heathrow

Tue 6/10

22:05-13:45

2 stops33h 40m

£830

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 15/9

13:50-06:55

2 stops23h 05m

London Heathrow

Tue 6/10

22:05-15:10

2 stops35h 05m

£831

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 22/6

15:30-06:55

2 stops21h 25m

London Heathrow

Mon 29/6

14:45-20:50

2 stops24h 05m

£848

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 11/9

13:30-15:20

2 stops31h 50m

London Heathrow

Wed 30/9

14:45-20:30

2 stops23h 45m

£851

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 40m
Direct flights	None

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