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

Gulf 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.

£345 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.

15:25 - 06:55

USM

LHR

21h 30m

2 stops

22:05 - 12:45

LHR

USM

32h 40m

2 stops

£774Multiple Airlines

Sun, 24 May - Sun, 31 May

13:30 - 06:55

USM

LHR

23h 25m

2 stops

14:45 - 21:35

LHR

USM

24h 50m

2 stops

£774Multiple Airlines

Mon, 25 May - Mon, 1 Jun

15:20 - 15:20

USM

LHR

30h 00m

2 stops

10:00 - 14:45

LHR

USM

22h 45m

2 stops

£795Gulf Air

Fri, 15 May - Sun, 17 May

13:30 - 06:55

USM

LHR

23h 25m

2 stops

15:50 - 21:35

LHR

USM

23h 45m

3 stops

£821Multiple Airlines

Fri, 15 May - Sun, 17 May

15:50 - 06:55

USM

LHR

21h 05m

2 stops

10:00 - 13:45

LHR

USM

21h 45m

2 stops

£856Gulf Air

Thu, 14 May - Sun, 17 May

14:35 - 06:55

USM

LHR

22h 20m

2 stops

10:00 - 15:25

LHR

USM

23h 25m

2 stops

£858Gulf Air

Thu, 14 May - Sun, 17 May

15:50 - 06:55

USM

LHR

21h 05m

2 stops

22:05 - 15:10

LHR

USM

35h 05m

2 stops

£858Gulf Air

Thu, 14 May - Sun, 17 May

15:25 - 15:20

USM

LHR

29h 55m

2 stops

10:00 - 15:45

LHR

USM

23h 45m

2 stops

£860Gulf Air

Thu, 14 May - Sun, 17 May

16:25 - 07:05

USM

LHR

20h 40m

2 stops

09:05 - 21:10

LHR

USM

30h 05m

2 stops

£907Emirates

Thu, 14 May - Sun, 17 May

06:00 - 18:45

USM

LHR

18h 45m

2 stops

14:45 - 16:35

LHR

USM

19h 50m

2 stops

£921Multiple Airlines

Tue, 21 Jul - Wed, 26 Aug

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

25 Jul

USM17:55Ko Samui

19h 35m

2 stops

LHR07:30London Heathrow

7 Aug

LHR17:00London Heathrow

18h 05m

2 stops

USM17:05Ko Samui

£1,041

Qatar Airways

25 Jul

USM17:55Ko Samui

19h 35m

2 stops

LHR07:30London Heathrow

7 Aug

LHR17:00London Heathrow

17h 30m

2 stops

USM16:30Ko Samui

£1,042

EVA Air flights from Ko Samui to London Heathrow Airport

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

EVA Air

21 Jul

USM08:45Ko Samui

16h 35m

1 stop

LHR19:20London Heathrow

26 Aug

LHR21:35London Heathrow

27h 35m

1 stop

USM07:10Ko Samui

£1,113

EVA Air

14 May

USM21:00Ko Samui

28h 20m

1 stop

LHR19:20London Heathrow

17 May

LHR21:35London Heathrow

16h 55m

1 stop

USM20:30Ko Samui

£1,187

EVA Air

14 May

USM21:00Ko Samui

28h 20m

1 stop

LHR19:20London Heathrow

17 May

LHR21:35London Heathrow

16h 55m

1 stop

USM20:30Ko Samui

£1,188

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

Sun 24/5

15:25-06:55

2 stops21h 30m

London Heathrow

Sun 31/5

22:05-12:45

2 stops32h 40m

£774

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 25/5

13:30-06:55

2 stops23h 25m

London Heathrow

Mon 1/6

14:45-21:35

2 stops24h 50m

£774

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 15/5

15:20-15:20

2 stops30h 00m

London Heathrow

Sun 17/5

10:00-14:45

2 stops22h 45m

£794

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 15/5

13:30-06:55

2 stops23h 25m

London Heathrow

Sun 17/5

15:50-21:35

3 stops23h 45m

£821

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 14/5

15:50-06:55

2 stops21h 05m

London Heathrow

Sun 17/5

10:00-13:45

2 stops21h 45m

£856

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 14/5

14:35-06:55

2 stops22h 20m

London Heathrow

Sun 17/5

10:00-15:25

2 stops23h 25m

£858

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 14/5

15:50-06:55

2 stops21h 05m

London Heathrow

Sun 17/5

22:05-15:10

2 stops35h 05m

£858

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 14/5

15:25-15:20

2 stops29h 55m

London Heathrow

Sun 17/5

10:00-15:45

2 stops23h 45m

£860

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 14/5

16:25-07:05

2 stops20h 40m

London Heathrow

Sun 17/5

09:05-21:10

2 stops30h 05m

£907

Fastest return journey

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 21/7

06:00-18:45

2 stops18h 45m

London Heathrow

Wed 26/8

14:45-16:35

2 stops19h 50m

£921

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

Fastest flight time	19h 35m
Direct flights	None

The fastest flight from Ko Samui to London Heathrow Airport takes 19h 35m

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 19h 35m 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.