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

Etihad Airways, Qatar Airways, and EVA 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.

£271 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.

06:00 - 18:45

USM

LHR

18h 45m

2 stops

14:45 - 15:25

LHR

USM

18h 40m

2 stops

£745Multiple Airlines

Fri, 8 May - Fri, 5 Jun

08:40 - 07:00

USM

LHR

28h 20m

2 stops

09:30 - 18:50

LHR

USM

27h 20m

2 stops

£746Multiple Airlines

Tue, 28 Apr - Tue, 5 May

08:40 - 07:00

USM

LHR

28h 20m

2 stops

09:30 - 18:50

LHR

USM

27h 20m

2 stops

£796Multiple Airlines

Fri, 24 Apr - Fri, 1 May

08:45 - 07:00

USM

LHR

28h 15m

2 stops

09:30 - 20:50

LHR

USM

29h 20m

2 stops

£804Multiple Airlines

Sun, 26 Apr - Sun, 3 May

08:20 - 07:00

USM

LHR

28h 40m

2 stops

09:30 - 18:15

LHR

USM

26h 45m

2 stops

£808Etihad Airways

Sat, 25 Apr - Sat, 2 May

11:05 - 07:00

USM

LHR

25h 55m

2 stops

19:55 - 07:45

LHR

USM

29h 50m

3 stops

£811Multiple Airlines

Sat, 25 Apr - Sat, 2 May

08:45 - 07:00

USM

LHR

28h 15m

2 stops

14:45 - 16:30

LHR

USM

19h 45m

2 stops

£814Multiple Airlines

Sat, 25 Apr - Sat, 2 May

15:50 - 06:55

USM

LHR

21h 05m

2 stops

10:00 - 12:45

LHR

USM

20h 45m

2 stops

£853Gulf Air

Thu, 11 Jun - Mon, 15 Jun

15:25 - 06:55

USM

LHR

21h 30m

2 stops

10:00 - 15:10

LHR

USM

23h 10m

2 stops

£855Gulf Air

Thu, 11 Jun - Mon, 15 Jun

15:50 - 06:55

USM

LHR

21h 05m

2 stops

10:00 - 15:45

LHR

USM

23h 45m

2 stops

£862Gulf Air

Thu, 11 Jun - Mon, 15 Jun

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

11 Jun

USM15:50Ko Samui

21h 05m

2 stops

LHR06:55London Heathrow

15 Jun

LHR10:00London Heathrow

20h 45m

2 stops

USM12:45Ko Samui

£853

Gulf Air

11 Jun

USM15:25Ko Samui

21h 30m

2 stops

LHR06:55London Heathrow

15 Jun

LHR10:00London Heathrow

23h 10m

2 stops

USM15:10Ko Samui

£855

Gulf Air

11 Jun

USM15:50Ko Samui

21h 05m

2 stops

LHR06:55London Heathrow

15 Jun

LHR10:00London Heathrow

23h 45m

2 stops

USM15:45Ko Samui

£862

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

11 Jun

USM07:50Ko Samui

17h 30m

1 stop

LHR19:20London Heathrow

15 Jun

LHR21:35London Heathrow

17h 15m

1 stop

USM20:50Ko Samui

£927

EVA Air

11 Jun

USM08:45Ko Samui

16h 35m

1 stop

LHR19:20London Heathrow

15 Jun

LHR21:35London Heathrow

17h 15m

1 stop

USM20:50Ko Samui

£928

EVA Air

11 May

USM21:00Ko Samui

28h 20m

1 stop

LHR19:20London Heathrow

4 Jun

LHR21:35London Heathrow

14h 55m

1 stop

USM18:30Ko Samui

£934

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

Fastest return journey

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 8/5

06:00-18:45

2 stops18h 45m

London Heathrow

Fri 5/6

14:45-15:25

2 stops18h 40m

£745

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 28/4

08:40-07:00

2 stops28h 20m

London Heathrow

Tue 5/5

09:30-18:50

2 stops27h 20m

£746

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 24/4

08:40-07:00

2 stops28h 20m

London Heathrow

Fri 1/5

09:30-18:50

2 stops27h 20m

£796

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sun 26/4

08:45-07:00

2 stops28h 15m

London Heathrow

Sun 3/5

09:30-20:50

2 stops29h 20m

£804

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sat 25/4

08:20-07:00

2 stops28h 40m

London Heathrow

Sat 2/5

09:30-18:15

2 stops26h 45m

£808

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sat 25/4

11:05-07:00

2 stops25h 55m

London Heathrow

Sat 2/5

19:55-07:45

3 stops29h 50m

£811

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sat 25/4

08:45-07:00

2 stops28h 15m

London Heathrow

Sat 2/5

14:45-16:30

2 stops19h 45m

£814

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 11/6

15:50-06:55

2 stops21h 05m

London Heathrow

Mon 15/6

10:00-12:45

2 stops20h 45m

£853

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 11/6

15:25-06:55

2 stops21h 30m

London Heathrow

Mon 15/6

10:00-15:10

2 stops23h 10m

£855

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 11/6

15:50-06:55

2 stops21h 05m

London Heathrow

Mon 15/6

10:00-15:45

2 stops23h 45m

£862

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

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Ko Samui is on a Friday. momondo users have found tickets for Friday departures for as low as £522. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Monday is £884.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Ko Samui to London Heathrow Airport in the evening for as low as £549. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £656 on average. Flights to London Heathrow Airport from Ko Samui in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You could potentially save up to 39% 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	18h 45m
Direct flights	None

The fastest flight from Ko Samui to London Heathrow Airport takes 18h 45m

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

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 18h 45m 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

Chelmsford

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Hayes

Dover

Folkestone

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.