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

Flights connecting via Frankfurt am Main (FRA) have the shortest average one-way travel time: 15h 00m.

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

Hong Kong (HKG) has the shortest average stopover time for this route: 1h 08m.

How often are flights from London to Ko Samui delayed?

Historically, on average around 10% of flights between London and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 150 minutes.

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

Flights via Shanghai (PVG) offer the lowest average return price of £450.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

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

Bangkok (BKK) was the most common stop: 78% of momondo users choosing one-stop flights on this route connected there.

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

SWISS is the most popular carrier operating from London to Ko Samui

What is the most punctual flight time for London to Ko Samui flights?

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Which airlines fly to Ko Samui?

EVA Air, Thai Airways and Singapore Airlines are the top three most popular airlines that fly to Ko Samui from London according to our data. EVA Air is the first choice among our users, with 41% of people opting to fly with this airline when travelling to Ko Samui. Keep in mind that there are 14 different airlines that fly to Ko Samui on a routine basis, so you have a few additional options to choose from.

Which airline has the best punctuality record on London to Ko Samui flights?

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 4% of their flights experiencing any sort of delay.

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

Prices for flights from London to Ko Samui Airport are updated daily.

How many operators does momondo search for flights from London to Ko Samui Airport?

As of January 2026, there are 14 operators available to choose from for flights from London to Ko Samui Airport.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Ko Samui Airport.

What documentation or ID do you need to fly to Ko Samui Airport?

The travel and health documents you'll need for your trip to Ko Samui Airport 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 Ko Samui Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£281 Cheap Flights from London to Ko Samui in 2026

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21:20 - 10:30

LHR

USM

31h 10m

2 stops

15:25 - 06:55

USM

LHR

21h 30m

2 stops

£724Multiple Airlines

Fri, 17 Apr - Sat, 2 May

21:45 - 18:15

LHR

USM

38h 30m

2 stops

06:00 - 07:00

USM

LHR

31h 00m

2 stops

£725Multiple Airlines

Thu, 9 Apr - Sun, 10 May

20:05 - 21:05

LHR

USM

42h 00m

2 stops

08:55 - 08:45

USM

LHR

30h 50m

2 stops

£726Multiple Airlines

Sat, 7 Mar - Sun, 22 Mar

21:45 - 07:10

LHR

USM

27h 25m

2 stops

20:35 - 18:45

USM

LHR

28h 10m

2 stops

£728Etihad Airways

Fri, 1 May - Fri, 15 May

09:30 - 21:35

LHR

USM

30h 05m

2 stops

20:35 - 18:45

USM

LHR

28h 10m

2 stops

£731Etihad Airways

Wed, 29 Apr - Thu, 14 May

20:35 - 18:50

LHR

USM

16h 15m

1 stop

08:40 - 19:30

USM

LHR

16h 50m

1 stop

£734Singapore Airlines

Mon, 11 May - Sat, 16 May

10:25 - 21:10

LGW

USM

28h 45m

2 stops

16:25 - 09:40

USM

LGW

23h 15m

2 stops

£744Air France

Sun, 26 Apr - Mon, 11 May

10:15 - 17:20

LGW

USM

25h 05m

1 stop

19:45 - 06:55

USM

LGW

17h 10m

1 stop

£745Singapore Airlines

Mon, 11 May - Sat, 16 May

09:15 - 12:45

LGW

USM

21h 30m

2 stops

10:05 - 08:20

USM

LGW

28h 15m

2 stops

£757SWISS

Wed, 27 May - Wed, 3 Jun

09:15 - 12:45

LCY

USM

21h 30m

2 stops

10:05 - 08:40

USM

LCY

28h 35m

2 stops

£778SWISS

Wed, 27 May - Wed, 3 Jun

Etihad Airways flights from London to Ko Samui

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

Etihad Airways

5 May

LHR09:30London Heathrow

22h 25m

2 stops

USM13:55Ko Samui

14 May

USM19:10Ko Samui

25h 55m

2 stops

LHR15:05London Heathrow

£723

Etihad Airways

12 Jun

LHR14:45London Heathrow

24h 50m

2 stops

USM21:35Ko Samui

26 Jun

USM20:50Ko Samui

27h 55m

2 stops

LHR18:45London Heathrow

£727

Etihad Airways

14 Jun

LHR09:30London Heathrow

30h 05m

2 stops

USM21:35Ko Samui

27 Jun

USM19:10Ko Samui

29h 35m

2 stops

LHR18:45London Heathrow

£730

Singapore Airlines flights from London to Ko Samui

Our best Singapore Airlines deals on London to Ko Samui flight tickets

Singapore Airlines

5 May

LHR20:35London Heathrow

16h 15m

1 stop

USM18:50Ko Samui

16 May

USM08:40Ko Samui

16h 50m

1 stop

LHR19:30London Heathrow

£728

Singapore Airlines

11 May

LHR20:35London Heathrow

16h 15m

1 stop

USM18:50Ko Samui

16 May

USM08:40Ko Samui

16h 50m

1 stop

LHR19:30London Heathrow

£734

Singapore Airlines

5 May

LGW10:15London Gatwick

25h 05m

1 stop

USM17:20Ko Samui

12 May

USM18:15Ko Samui

18h 40m

1 stop

LGW06:55London Gatwick

£738

Fly from

Fly to

Route

Depart

Return

Price

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Fri 17/4

21:20-10:30

2 stops31h 10m

Ko Samui

Sat 2/5

15:25-06:55

2 stops21h 30m

£724

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 9/4

21:45-18:15

2 stops38h 30m

Ko Samui

Sun 10/5

06:00-07:00

2 stops31h 00m

£725

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sat 7/3

20:05-21:05

2 stops42h 00m

Ko Samui

Sun 22/3

08:55-08:45

2 stops30h 50m

£726

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Fri 1/5

21:45-07:10

2 stops27h 25m

Ko Samui

Fri 15/5

20:35-18:45

2 stops28h 10m

£728

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Wed 29/4

09:30-21:35

2 stops30h 05m

Ko Samui

Thu 14/5

20:35-18:45

2 stops28h 10m

£731

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 11/5

20:35-18:50

1 stop16h 15m

Ko Samui

Sat 16/5

08:40-19:30

1 stop16h 50m

£734

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Sun 26/4

10:25-21:10

2 stops28h 45m

Ko Samui

Mon 11/5

16:25-09:40

2 stops23h 15m

£744

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Mon 11/5

10:15-17:20

1 stop25h 05m

Ko Samui

Sat 16/5

19:45-06:55

1 stop17h 10m

£745

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Wed 27/5

09:15-12:45

2 stops21h 30m

Ko Samui

Wed 3/6

10:05-08:20

2 stops28h 15m

£757

LondonKo Samui

LCY - USM

LCYUSM

London City

Wed 27/5

09:15-12:45

2 stops21h 30m

Ko Samui

Wed 3/6

10:05-08:40

2 stops28h 35m

£778

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 London to Ko Samui

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

Delays

Stopovers

What is the cheapest month to fly to Ko Samui?

The cheapest month to fly to Ko Samui from London is in May. Flight prices, which tend to average around £779, are often lower during this time because this is during the off-season. If you don’t want to visit Ko Samui in May, then you should wait until November to fly from London, when ticket prices are also cheap, with an average price of £787.

What is the cheapest day to depart on your flight to Ko Samui?

According to our data, Wednesday is the cheapest day to fly to Ko Samui from London. The lowest ticket price found for a Wednesday departure recently was £483. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Ko Samui on Sunday is £824.

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

Our most recent data shows that the best time of day to fly to Ko Samui is in the afternoon. Flights from London to Ko Samui during this time can be as low as £490. Flights at midday are often more expensive, with an average ticket price of £796.

How far in advance should I book a flight to Ko Samui?

You are more likely to see cheaper flights to Ko Samui from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Ko Samui for around £884 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ko Samui from London for as low as £761 on momondo.

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

You could potentially save up to 26% on your flight if you consider stops on a London to Ko Samui flight.

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

As of January 2026, prices for London to Ko Samui flights are approximately 2% cheaper when compared to flights at the same time last year.

When to book flights from London to Ko Samui

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

Estimated return price

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

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

Fastest flight time	16h 35m
Direct flights	None

The fastest flight from London to Ko Samui takes 16h 35m

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

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How far is London to Ko Samui by plane?
London and Ko Samui are 6131.1 mi apart from one another. In terms of flight time, this usually takes a little over 16h 35m.
When did momondo last update prices for flights from London to Ko Samui Airport?
Prices for flights from London to Ko Samui Airport are updated daily.
How many operators does momondo search for flights from London to Ko Samui Airport?
As of January 2026, there are 14 operators available to choose from for flights from London to Ko Samui Airport.
How old do you have to be to fly from London to Ko Samui Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Ko Samui Airport.
What documentation or ID do you need to fly to Ko Samui Airport?
The travel and health documents you'll need for your trip to Ko Samui Airport 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 Ko Samui Airport. 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 London to Ko Samui?
momondo data reveals that the most frequently booked airline on the route from London to Ko Samui is Thai Airways, representing 29% of all bookings. The subsequent popular airlines are EVA Air at 29%, British Airways at 13%, and Singapore Airlines at 12%.

Best airlines flying from London to Ko Samui

Compare and see reviews for airlines that fly from London to Ko Samui with momondo

Airline	Rating	Free Cancellation	Price
Bangkok Airways	PriceFrom £112	Free Cancellation	Rating 8.0 121 reviews	Search Bangkok Airways flights
Air India	PriceFrom £426	Free Cancellation	Rating 5.5 2,976 reviews	Search Air India flights
Austrian Airlines	PriceFrom £589	Free Cancellation	Rating 7.5 895 reviews	Search Austrian Airlines flights
Lufthansa	PriceFrom £591	Free Cancellation	Rating 6.8 7,747 reviews	Search Lufthansa flights
SWISS	PriceFrom £594	Free Cancellation	Rating 7.6 1,861 reviews	Search SWISS flights
Etihad Airways	PriceFrom £601	Free Cancellation	Rating 7.3 1,377 reviews	Search Etihad Airways flights
KLM	PriceFrom £622	Free Cancellation	Rating 7.7 1,443 reviews	Search KLM flights
Air France	PriceFrom £647	Free Cancellation	Rating 7.4 1,526 reviews	Search Air France flights
EVA Air	PriceFrom £712	Free Cancellation	Rating 8.4 1,333 reviews	Search EVA Air flights
British Airways	PriceFrom £715	Free Cancellation	Rating 6.7 7,702 reviews	Search British Airways flights

Ko Pha Ngan

Ko Tao

Khanom

Why use momondo?

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

Finding the right flight to Ko Samui from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ko Samui quick and easy, saving you time and money.

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

Yes. All flights to Ko Samui from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for London to Ko Samui 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 London to Ko Samui right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ko Samui from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ko Samui 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.

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Cheap flights from London to Ko Samui from £281

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Ko Samui departing on 21/2. 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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Big names, great deals

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Find the cheapest flights from London to Ko Samui

Cheap return flights

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Etihad Airways flights from London to Ko Samui

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

Singapore Airlines flights from London to Ko Samui

Our best Singapore Airlines deals on London to Ko Samui flight tickets

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Use the filters below to find and compare flights from London to Ko Samui that are best for you.

See travel insights to Ko Samui from

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

What is the cheapest month to fly to Ko Samui?

What is the cheapest day to depart on your flight to Ko Samui?

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

Our most recent data shows that the best time of day to fly to Ko Samui is in the afternoon. Flights from London to Ko Samui during this time can be as low as £490. Flights at midday are often more expensive, with an average ticket price of £796.

How far in advance should I book a flight to Ko Samui?

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

You could potentially save up to 26% on your flight if you consider stops on a London to Ko Samui flight.

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

As of January 2026, prices for London to Ko Samui flights are approximately 2% cheaper when compared to flights at the same time last year.

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

SWISS is the most popular carrier operating from London to Ko Samui

Which airlines fly to Ko Samui?

How often are flights from London to Ko Samui delayed?

Historically, on average around 10% of flights between London and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 150 minutes.

What is the most punctual flight time for London to Ko Samui flights?

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on London to Ko Samui flights?

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 4% of their flights experiencing any sort of delay.

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

Bangkok (BKK) was the most common stop: 78% of momondo users choosing one-stop flights on this route connected there.

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

Flights via Shanghai (PVG) offer the lowest average return price of £450.

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

Flights connecting via Frankfurt am Main (FRA) have the shortest average one-way travel time: 15h 00m.

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

Hong Kong (HKG) has the shortest average stopover time for this route: 1h 08m.

When to book flights from London to Ko Samui

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

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

Fastest flight time

Direct flights

How far is London to Ko Samui by plane?

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

How many operators does momondo search for flights from London to Ko Samui Airport?

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

What documentation or ID do you need to fly to Ko Samui Airport?

What is the most popular airline from London to Ko Samui?

Best airlines flying from London to Ko Samui

Compare and see reviews for airlines that fly from London to Ko Samui with momondo

Travelling to a place near Ko Samui?

Why use momondo?

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

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

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

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

An easier way to manage your Ko Samui 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 Thailand

Airports servicing Thailand