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

Flights connecting via Kuwait City (KWI) have the shortest average one-way travel time: 15h 20m.

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.

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 13 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 5% of their flights experiencing any sort of delay.

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

Bangkok (BKK) was the most common stop: 77% of momondo users choosing one-stop flights on this route connected there.

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.

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 157 minutes.

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

Flights via Shanghai (PVG) offer the lowest average return price of £500.

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

Singapore Airlines, SWISS, and KLM are the most popular carriers operating from London to Ko Samui

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 December 2025, there are 13 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.

£270 Cheap Flights from London to Ko Samui in 2025/26

Q: What is the typical price of a round-trip flight between London and Ko Samui?

Prices are currently low for flights on this route. Typical prices usually range from £1,086 to £1,469. The lowest price recently found on this route was £736.

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Find the cheapest flights from London to Ko Samui

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One-way

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Enter your travel dates to find the best prices.

06:15 - 20:50

LGW

USM

31h 35m3 stops

08:55 - 18:45

USM

LGW

40h 50m3 stops

£736Multiple Airlines

Mon, 2 Mar - Mon, 9 Mar

10:30 - 19:50

LGW

USM

26h 20m2 stops

09:00 - 06:30

USM

LGW

28h 30m2 stops

£739Multiple Airlines

Fri, 23 Jan - Sat, 7 Feb

10:25 - 17:50

LHR

USM

24h 25m2 stops

06:00 - 05:55

USM

LHR

29h 55m2 stops

£741Multiple Airlines

Sun, 22 Mar - Thu, 2 Apr

07:30 - 18:25

LGW

USM

27h 55m3 stops

08:15 - 23:55

USM

LGW

46h 40m3 stops

£742Multiple Airlines

Mon, 9 Feb - Fri, 20 Feb

19:20 - 07:45

LHR

USM

29h 25m2 stops

08:15 - 12:05

USM

LHR

34h 50m2 stops

£747Etihad Airways

Mon, 23 Feb - Thu, 5 Mar

19:20 - 07:45

LHR

USM

29h 25m2 stops

13:25 - 06:40

USM

LHR

24h 15m2 stops

£750Etihad Airways

Mon, 19 Jan - Mon, 2 Feb

17:10 - 18:15

LCY

USM

19h 05m2 stops

11:55 - 08:50

USM

LCY

26h 55m2 stops

£827KLM

Mon, 1 Jun - Sun, 7 Jun

17:10 - 18:15

LCY

USM

19h 05m2 stops

11:55 - 07:55

USM

LCY

26h 00m2 stops

£874KLM

Tue, 14 Apr - Tue, 12 May

19:20 - 21:05

LCY

USM

18h 45m2 stops

10:00 - 08:00

USM

LCY

29h 00m2 stops

£887SWISS

Fri, 6 Mar - Fri, 20 Mar

18:10 - 21:05

LCY

USM

19h 55m2 stops

16:25 - 09:05

USM

LCY

23h 40m2 stops

£888Lufthansa

Wed, 21 Jan - Wed, 28 Jan

Singapore Airlines flights from London to Ko Samui

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

Singapore Airlines

19 Jan

LGW09:25London Gatwick

26h 25m

1 stop

USM18:50Ko Samui

29 Jan

USM12:00Ko Samui

25h 25m

1 stop

LGW06:25London Gatwick

£802

Find similar

Singapore Airlines

19 Jan

LGW09:25London Gatwick

26h 25m

1 stop

USM18:50Ko Samui

29 Jan

USM12:00Ko Samui

25h 25m

1 stop

LGW06:25London Gatwick

£806

Find similar

Singapore Airlines

4 May

LGW10:15London Gatwick

25h 05m

1 stop

USM17:20Ko Samui

15 May

USM19:45Ko Samui

16h 40m

1 stop

LGW06:25London Gatwick

£813

Find similar

KLM flights from London to Ko Samui

Our best KLM deals on London to Ko Samui flight tickets

KLM

1 Jun

LCY17:10London City

19h 05m

2 stops

USM18:15Ko Samui

7 Jun

USM11:55Ko Samui

26h 55m

2 stops

LCY08:50London City

£827

Find similar

KLM

14 Apr

LCY17:10London City

19h 05m

2 stops

USM18:15Ko Samui

12 May

USM11:55Ko Samui

26h 00m

2 stops

LCY07:55London City

£874

Find similar

KLM

14 Apr

LCY17:50London City

18h 25m

2 stops

USM18:15Ko Samui

12 May

USM11:55Ko Samui

26h 00m

2 stops

LCY07:55London City

£875

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Mon 2/3

06:15-20:50

3 stops31h 35m

Ko Samui

Mon 9/3

08:55-18:45

3 stops40h 50m

£736

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Fri 23/1

10:30-19:50

2 stops26h 20m

Ko Samui

Sat 7/2

09:00-06:30

2 stops28h 30m

£739

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sun 22/3

10:25-17:50

2 stops24h 25m

Ko Samui

Thu 2/4

06:00-05:55

2 stops29h 55m

£741

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Mon 9/2

07:30-18:25

3 stops27h 55m

Ko Samui

Fri 20/2

08:15-23:55

3 stops46h 40m

£742

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 23/2

19:20-07:45

2 stops29h 25m

Ko Samui

Thu 5/3

08:15-12:05

2 stops34h 50m

£747

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 19/1

19:20-07:45

2 stops29h 25m

Ko Samui

Mon 2/2

13:25-06:40

2 stops24h 15m

£750

LondonKo Samui

LCY - USM

LCYUSM

London City

Mon 1/6

17:10-18:15

2 stops19h 05m

Ko Samui

Sun 7/6

11:55-08:50

2 stops26h 55m

£827

LondonKo Samui

LCY - USM

LCYUSM

London City

Tue 14/4

17:10-18:15

2 stops19h 05m

Ko Samui

Tue 12/5

11:55-07:55

2 stops26h 00m

£874

LondonKo Samui

LCY - USM

LCYUSM

London City

Fri 6/3

19:20-21:05

2 stops18h 45m

Ko Samui

Fri 20/3

10:00-08:00

2 stops29h 00m

£887

LondonKo Samui

LCY - USM

LCYUSM

London City

Wed 21/1

18:10-21:05

2 stops19h 55m

Ko Samui

Wed 28/1

16:25-09:05

2 stops23h 40m

£888

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 typical price of a round-trip flight between London and Ko Samui?

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 £793, 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 October to fly from London, when ticket prices are also cheap, with an average price of £803.

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 £494. 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 £842.

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 £500. Flights at midday are often more expensive, with an average ticket price of £813.

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 £911 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 £781 on momondo.

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

As of December 2025, prices for London to Ko Samui flights are approximately 47% 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 15m
Direct flights	None

The fastest flight from London to Ko Samui takes 16h 15m

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

Search flight deals

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 15m.
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 December 2025, there are 13 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 31% of all bookings. The subsequent popular airlines are EVA Air at 30%, Singapore Airlines at 13%, and British Airways 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 £114	Free Cancellation	Rating 8.0 118 reviews	Search Bangkok Airways flights
Air India	PriceFrom £413	Free Cancellation	Rating 5.5 2,947 reviews	Search Air India flights
Austrian Airlines	PriceFrom £601	Free Cancellation	Rating 7.6 879 reviews	Search Austrian Airlines flights
SWISS	PriceFrom £607	Free Cancellation	Rating 7.5 1,810 reviews	Search SWISS flights
Lufthansa	PriceFrom £628	Free Cancellation	Rating 6.8 7,626 reviews	Search Lufthansa flights
KLM	PriceFrom £636	Free Cancellation	Rating 7.7 1,432 reviews	Search KLM flights
Etihad Airways	PriceFrom £647	Free Cancellation	Rating 7.4 1,331 reviews	Search Etihad Airways flights
Air France	PriceFrom £661	Free Cancellation	Rating 7.4 1,504 reviews	Search Air France flights
EVA Air	PriceFrom £729	Free Cancellation	Rating 8.4 1,296 reviews	Search EVA Air flights
British Airways	PriceFrom £743	Free Cancellation	Rating 6.7 7,571 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.

Start using Trips

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Cheap flights from London to Ko Samui from £325

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 30/1. 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

Filter for what you want

Filter for what you want

Trusted and free

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Find the cheapest flights from London to Ko Samui

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Singapore Airlines flights from London to Ko Samui

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

KLM flights from London to Ko Samui

Our best KLM 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 typical price of a round-trip flight between London and 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 £500. Flights at midday are often more expensive, with an average ticket price of £813.

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

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

As of December 2025, prices for London to Ko Samui flights are approximately 47% cheaper when compared to flights at the same time last year.

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

Singapore Airlines, SWISS, and KLM are the most popular carriers 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 157 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 5% 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: 77% 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 £500.

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

Flights connecting via Kuwait City (KWI) have the shortest average one-way travel time: 15h 20m.

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