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.

£354 Cheap Flights from Ko Samui to London Heathrow Airport in 2026

Find the cheapest flights from Ko Samui to London

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

19:00 - 11:30

USM

LHR

22h 30m

2 stops

12:30 - 17:05

LHR

USM

22h 35m

2 stops

£735Multiple Airlines

Thu, 17 Sep - Wed, 30 Sep

19:00 - 11:30

USM

LHR

22h 30m

2 stops

14:00 - 20:50

LHR

USM

24h 50m

2 stops

£736Multiple Airlines

Thu, 10 Sep - Thu, 17 Sep

11:25 - 11:30

USM

LHR

30h 05m

2 stops

12:30 - 20:50

LHR

USM

26h 20m

2 stops

£761Multiple Airlines

Mon, 7 Sep - Mon, 14 Sep

11:25 - 11:30

USM

LHR

30h 05m

2 stops

10:00 - 12:45

LHR

USM

20h 45m

2 stops

£810Multiple Airlines

Tue, 8 Sep - Tue, 15 Sep

11:25 - 11:30

USM

LHR

30h 05m

2 stops

22:00 - 12:45

LHR

USM

32h 45m

3 stops

£814Multiple Airlines

Mon, 7 Sep - Mon, 14 Sep

15:20 - 06:55

USM

LHR

21h 35m

2 stops

22:05 - 17:05

LHR

USM

37h 00m

2 stops

£817Gulf Air

Tue, 15 Sep - Tue, 6 Oct

19:00 - 07:30

USM

LHR

42h 30m

2 stops

10:00 - 13:45

LHR

USM

21h 45m

2 stops

£837Multiple Airlines

Mon, 7 Sep - Mon, 14 Sep

11:25 - 11:30

USM

LHR

30h 05m

2 stops

22:00 - 12:45

LHR

USM

32h 45m

3 stops

£862Multiple Airlines

Mon, 7 Sep - Mon, 14 Sep

15:50 - 06:55

USM

LHR

21h 05m

2 stops

10:00 - 15:10

LHR

USM

23h 10m

2 stops

£864Gulf Air

Tue, 15 Sep - Tue, 6 Oct

13:50 - 06:55

USM

LHR

23h 05m

2 stops

22:05 - 16:35

LHR

USM

36h 30m

2 stops

£865Gulf Air

Tue, 15 Sep - Tue, 6 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

4 Oct

USM16:25Ko Samui

28h 00m

2 stops

LHR14:25London Heathrow

7 Oct

LHR14:25London Heathrow

24h 45m

2 stops

USM21:10Ko Samui

£908

Emirates

26 Oct

USM16:25Ko Samui

26h 15m

2 stops

LHR11:40London Heathrow

31 Oct

LHR13:40London Heathrow

24h 25m

2 stops

USM21:05Ko Samui

£925

Emirates

26 Oct

USM16:25Ko Samui

26h 15m

2 stops

LHR11:40London Heathrow

31 Oct

LHR13:40London Heathrow

24h 25m

2 stops

USM21:05Ko Samui

£928

Thai Airways flights from Ko Samui to London Heathrow Airport

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

Thai Airways

17 Sept

USM08:45Ko Samui

16h 30m

1 stop

LHR19:15London Heathrow

30 Sept

LHR21:25London Heathrow

17h 05m

1 stop

USM20:30Ko Samui

£934

Thai Airways

15 Oct

USM20:50Ko Samui

16h 25m

1 stop

LHR07:15London Heathrow

14 Dec

LHR21:35London Heathrow

27h 35m

1 stop

USM08:10Ko Samui

£1,060

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 17/9

19:00-11:30

2 stops22h 30m

London Heathrow

Wed 30/9

12:30-17:05

2 stops22h 35m

£735

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 10/9

19:00-11:30

2 stops22h 30m

London Heathrow

Thu 17/9

14:00-20:50

2 stops24h 50m

£736

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 7/9

11:25-11:30

2 stops30h 05m

London Heathrow

Mon 14/9

12:30-20:50

2 stops26h 20m

£761

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 8/9

11:25-11:30

2 stops30h 05m

London Heathrow

Tue 15/9

10:00-12:45

2 stops20h 45m

£810

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 7/9

11:25-11:30

2 stops30h 05m

London Heathrow

Mon 14/9

22:00-12:45

3 stops32h 45m

£814

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 15/9

15:20-06:55

2 stops21h 35m

London Heathrow

Tue 6/10

22:05-17:05

2 stops37h 00m

£817

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 7/9

19:00-07:30

2 stops42h 30m

London Heathrow

Mon 14/9

10:00-13:45

2 stops21h 45m

£837

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 7/9

11:25-11:30

2 stops30h 05m

London Heathrow

Mon 14/9

22:00-12:45

3 stops32h 45m

£862

Fastest return journey

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 15/9

15:50-06:55

2 stops21h 05m

London Heathrow

Tue 6/10

10:00-15:10

2 stops23h 10m

£864

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 15/9

13:50-06:55

2 stops23h 05m

London Heathrow

Tue 6/10

22:05-16:35

2 stops36h 30m

£865

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

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

You could potentially save up to 23% 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	22h 30m
Direct flights	None

The fastest flight from Ko Samui to London Heathrow Airport takes 22h 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.

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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 22h 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.