Which airport is the most popular for stopovers for flights between Ko Samui and London?

Bangkok (BKK) was the most common stop: 50% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport has the shortest travel time from Ko Samui to London?

Flights connecting via Bangkok (BKK) have the shortest average one-way travel time: 17h 20m.

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

Qatar Airways, Emirates, and SWISS are the most popular carriers operating from Ko Samui to London

Which stopover airport has the shortest connection time from Ko Samui to London?

Bangkok (BKK) has the shortest average stopover time for this route: 2h 43m.

Which stopover airport offers the lowest fares from Ko Samui to London?

Flights via Bangkok (BKK) offer the lowest average return price of £1,070.

When did momondo last update prices for flights from Ko Samui Airport to London?

Prices for flights from Ko Samui Airport to London are refreshed on a daily basis.

How old do you have to be to fly from Ko Samui Airport to London?

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.

What documentation or ID do you need to fly to London?

The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£271 Cheap Flights from Ko Samui to London in 2026

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06:00 - 18:45

USM

LHR

18h 45m

2 stops

09:30 - 21:35

LHR

USM

30h 05m

2 stops

£511Multiple Airlines

Mon, 25 May - Mon, 8 Jun

07:50 - 11:15

USM

LGW

33h 25m

3 stops

08:40 - 21:35

LGW

USM

30h 55m

3 stops

£614Multiple Airlines

Mon, 25 May - Mon, 8 Jun

08:40 - 07:00

USM

LHR

28h 20m

2 stops

09:30 - 18:50

LHR

USM

27h 20m

2 stops

£706Multiple Airlines

Thu, 14 May - Thu, 21 May

14:30 - 07:45

USM

LGW

23h 15m

2 stops

09:15 - 11:05

LGW

USM

19h 50m

2 stops

£831Qatar Airways

Mon, 25 May - Mon, 8 Jun

13:30 - 06:40

USM

LGW

23h 10m

2 stops

09:00 - 14:40

LGW

USM

23h 40m

2 stops

£865Qatar Airways

Mon, 20 Apr - Tue, 26 May

06:00 - 19:10

USM

LHR

19h 10m

2 stops

08:25 - 14:45

LHR

USM

24h 20m

2 stops

£897Oman Air

Mon, 18 May - Mon, 8 Jun

06:00 - 19:10

USM

LHR

19h 10m

2 stops

08:25 - 13:45

LHR

USM

23h 20m

2 stops

£903Oman Air

Sat, 16 May - Sat, 23 May

09:15 - 19:20

USM

LHR

16h 05m

1 stop

21:35 - 20:30

LHR

USM

16h 55m

1 stop

£965EVA Air

Mon, 25 May - Mon, 8 Jun

16:25 - 08:40

USM

LCY

22h 15m

2 stops

18:00 - 21:10

LCY

USM

21h 10m

2 stops

£1,788SWISS

Mon, 25 May - Mon, 8 Jun

10:05 - 08:40

USM

LCY

28h 35m

2 stops

13:10 - 12:45

LCY

USM

17h 35m

2 stops

£1,910SWISS

Thu, 14 May - Thu, 21 May

Qatar Airways flights from Ko Samui to London

Our best Qatar Airways deals on Ko Samui to London flight tickets

Qatar Airways

25 May

USM14:30Ko Samui

23h 15m

2 stops

LGW07:45London Gatwick

8 Jun

LGW09:15London Gatwick

19h 50m

2 stops

USM11:05Ko Samui

£831

Qatar Airways

20 Apr

USM13:30Ko Samui

23h 10m

2 stops

LGW06:40London Gatwick

26 May

LGW09:00London Gatwick

23h 40m

2 stops

USM14:40Ko Samui

£865

Qatar Airways

16 Apr

USM17:55Ko Samui

18h 45m

2 stops

LGW06:40London Gatwick

26 May

LGW09:00London Gatwick

23h 40m

2 stops

USM14:40Ko Samui

£869

EVA Air flights from Ko Samui to London

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

EVA Air

25 May

USM09:15Ko Samui

16h 05m

1 stop

LHR19:20London Heathrow

8 Jun

LHR21:35London Heathrow

16h 55m

1 stop

USM20:30Ko Samui

£965

EVA Air

25 Jul

USM09:15Ko Samui

16h 05m

1 stop

LHR19:20London Heathrow

7 Aug

LHR21:35London Heathrow

16h 55m

1 stop

USM20:30Ko Samui

£1,459

EVA Air

5 Apr

USM08:30Ko Samui

16h 50m

1 stop

LHR19:20London Heathrow

24 May

LHR21:35London Heathrow

18h 00m

1 stop

USM21:35Ko Samui

£3,203

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 25/5

06:00-18:45

2 stops18h 45m

London Heathrow

Mon 8/6

09:30-21:35

2 stops30h 05m

£511

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Mon 25/5

07:50-11:15

3 stops33h 25m

London Gatwick

Mon 8/6

08:40-21:35

3 stops30h 55m

£614

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 14/5

08:40-07:00

2 stops28h 20m

London Heathrow

Thu 21/5

09:30-18:50

2 stops27h 20m

£706

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Mon 25/5

14:30-07:45

2 stops23h 15m

London Gatwick

Mon 8/6

09:15-11:05

2 stops19h 50m

£831

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Mon 20/4

13:30-06:40

2 stops23h 10m

London Gatwick

Tue 26/5

09:00-14:40

2 stops23h 40m

£865

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 18/5

06:00-19:10

2 stops19h 10m

London Heathrow

Mon 8/6

08:25-14:45

2 stops24h 20m

£897

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sat 16/5

06:00-19:10

2 stops19h 10m

London Heathrow

Sat 23/5

08:25-13:45

2 stops23h 20m

£903

Fastest return journey

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 25/5

09:15-19:20

1 stop16h 05m

London Heathrow

Mon 8/6

21:35-20:30

1 stop16h 55m

£965

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Mon 25/5

16:25-08:40

2 stops22h 15m

London City

Mon 8/6

18:00-21:10

2 stops21h 10m

£1,788

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Thu 14/5

10:05-08:40

2 stops28h 35m

London City

Thu 21/5

13:10-12:45

2 stops17h 35m

£1,910

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

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

Stopovers

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

Our data shows that Friday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £522. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Ko Samui to London for around £640.

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

The cheapest time of day to fly to London is in the morning when flights can be purchased for as low as £565. Flights in the afternoon are often more expensive, with an average ticket price of £629.

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

You could potentially save up to 3% on your flight if you consider stops on a Ko Samui to London flight.

How have Ko Samui to London flight prices changed over time?

As of April 2026, prices for Ko Samui to London flights are approximately 5% more expensive when compared to flights at the same time last year.

When to book flights from Ko Samui to London

Are you open to changing your travel dates? Check out the ideal times to fly from Ko Samui to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Ko Samui to London (USM to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ko Samui to London

Fastest flight time	22h 10m
Direct flights	None

The fastest flight from Ko Samui to London takes 22h 10m

There are no direct flights from Ko Samui to London. There are no popular flight routes from Ko Samui to London.

Search flight deals

Frequently asked questions about flying from Ko Samui to London

How far is Ko Samui to London by plane?
The straight-line distance from Ko Samui to London is 6131.1 mi. Typically, this will take 22h 10m by plane in normal conditions.
When did momondo last update prices for flights from Ko Samui Airport to London?
Prices for flights from Ko Samui Airport to London are refreshed on a daily basis.
How old do you have to be to fly from Ko Samui Airport to London?
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.
What documentation or ID do you need to fly to London?
The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ko Samui to London?
Based on momondo bookings for flights between Ko Samui and London, the leading airline is Austrian Airlines, making up 100% of the total bookings.

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Worthing

Why use momondo?

Why should I use momondo to find a flight deal from Ko Samui to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ko Samui to London . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ko Samui to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ko Samui to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Ko Samui to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ko Samui to London.

I’m not ready to book a flight from Ko Samui to London right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ko Samui to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Ko Samui to London from £328

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ko Samui to London departing on 14/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Qatar Airways flights from Ko Samui to London

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

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How to get the cheapest flight ticket from Ko Samui to London

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

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

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

How have Ko Samui to London flight prices changed over time?

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

Which airport is the most popular for stopovers for flights between Ko Samui and London?

Which stopover airport offers the lowest fares from Ko Samui to London?

Which stopover airport has the shortest travel time from Ko Samui to London?

Which stopover airport has the shortest connection time from Ko Samui to London?

When to book flights from Ko Samui to London

Cheap Ko Samui to London (USM to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ko Samui to London

Fastest flight time

Direct flights

Frequently asked questions about flying from Ko Samui to London

Travelling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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