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.

£245 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.

11:40 - 06:25

USM

LHR

25h 45m

2 stops

08:40 - 18:15

LHR

USM

26h 35m

2 stops

£860Multiple Airlines

Thu, 12 Feb - Thu, 19 Feb

08:55 - 06:35

USM

LHR

28h 40m

2 stops

09:30 - 18:50

LHR

USM

26h 20m

2 stops

£863Multiple Airlines

Thu, 12 Feb - Thu, 19 Feb

14:05 - 18:25

USM

LHR

35h 20m

2 stops

20:05 - 10:35

LHR

USM

31h 30m

2 stops

£891Oman Air

Sat, 14 Mar - Sat, 21 Mar

17:05 - 05:55

USM

LHR

19h 50m

2 stops

20:05 - 21:20

LHR

USM

18h 15m

2 stops

£900Oman Air

Fri, 13 Mar - Fri, 20 Mar

07:55 - 19:05

USM

LHR

18h 10m

1 stop

21:20 - 19:50

LHR

USM

15h 30m

1 stop

£919EVA Air

Sat, 14 Mar - Sat, 21 Mar

07:15 - 19:05

USM

LHR

18h 50m

1 stop

21:20 - 20:25

LHR

USM

16h 05m

1 stop

£953EVA Air

Mon, 9 Mar - Wed, 11 Mar

08:30 - 19:05

USM

LHR

17h 35m

1 stop

21:20 - 18:40

LHR

USM

14h 20m

1 stop

£976Multiple Airlines

Fri, 13 Mar - Fri, 20 Mar

07:15 - 19:05

USM

LHR

18h 50m

1 stop

19:25 - 19:50

LHR

USM

17h 25m

2 stops

£982Multiple Airlines

Sat, 14 Mar - Sat, 21 Mar

09:00 - 19:05

USM

LHR

17h 05m

1 stop

06:40 - 17:50

LHR

USM

28h 10m

2 stops

£995Multiple Airlines

Fri, 13 Mar - Fri, 20 Mar

07:55 - 19:05

USM

LHR

18h 10m

1 stop

21:20 - 20:25

LHR

USM

16h 05m

1 stop

£1,001EVA Air

Mon, 9 Mar - Wed, 11 Mar

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

14 Mar

USM14:05Ko Samui

35h 20m

2 stops

LHR18:25London Heathrow

21 Mar

LHR20:05London Heathrow

31h 30m

2 stops

USM10:35Ko Samui

£891

Oman Air

13 Mar

USM17:05Ko Samui

19h 50m

2 stops

LHR05:55London Heathrow

20 Mar

LHR20:05London Heathrow

18h 15m

2 stops

USM21:20Ko Samui

£900

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

14 Mar

USM07:55Ko Samui

18h 10m

1 stop

LHR19:05London Heathrow

21 Mar

LHR21:20London Heathrow

15h 30m

1 stop

USM19:50Ko Samui

£919

EVA Air

9 Mar

USM07:15Ko Samui

18h 50m

1 stop

LHR19:05London Heathrow

11 Mar

LHR21:20London Heathrow

16h 05m

1 stop

USM20:25Ko Samui

£953

EVA Air

9 Mar

USM07:55Ko Samui

18h 10m

1 stop

LHR19:05London Heathrow

11 Mar

LHR21:20London Heathrow

16h 05m

1 stop

USM20:25Ko Samui

£1,001

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

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 12/2

11:40-06:25

2 stops25h 45m

London Heathrow

Thu 19/2

08:40-18:15

2 stops26h 35m

£860

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 12/2

08:55-06:35

2 stops28h 40m

London Heathrow

Thu 19/2

09:30-18:50

2 stops26h 20m

£863

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sat 14/3

14:05-18:25

2 stops35h 20m

London Heathrow

Sat 21/3

20:05-10:35

2 stops31h 30m

£891

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 13/3

17:05-05:55

2 stops19h 50m

London Heathrow

Fri 20/3

20:05-21:20

2 stops18h 15m

£900

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sat 14/3

07:55-19:05

1 stop18h 10m

London Heathrow

Sat 21/3

21:20-19:50

1 stop15h 30m

£919

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 9/3

07:15-19:05

1 stop18h 50m

London Heathrow

Wed 11/3

21:20-20:25

1 stop16h 05m

£953

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 13/3

08:30-19:05

1 stop17h 35m

London Heathrow

Fri 20/3

21:20-18:40

1 stop14h 20m

£976

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sat 14/3

07:15-19:05

1 stop18h 50m

London Heathrow

Sat 21/3

19:25-19:50

2 stops17h 25m

£982

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 13/3

09:00-19:05

1 stop17h 05m

London Heathrow

Fri 20/3

06:40-17:50

2 stops28h 10m

£995

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 9/3

07:55-19:05

1 stop18h 10m

London Heathrow

Wed 11/3

21:20-20:25

1 stop16h 05m

£1,001

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

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 £500. 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 £847.

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 £526. 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 £629 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 43% on your flight if you consider stops on a Ko Samui to London Heathrow Airport flight.

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	35h 20m
Direct flights	None

The fastest flight from Ko Samui to London Heathrow Airport takes 35h 20m

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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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 35h 20m 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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Luton

Gatwick

Maidstone

Slough

Northampton

Stratford-upon-Avon

Swindon

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Canterbury

Ipswich

Ilford

Poole

Guildford

Chelmsford

Hayes

Swanage

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.