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

Bangkok (BKK) has the shortest average stopover time for this route: 2h 30m.

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

SWISS and Austrian Airlines are the most popular carriers operating from London to Ko Samui

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 50% 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 airport is the most popular for stopovers for flights between London and Ko Samui?

Bangkok (BKK) was the most common stop: 82% 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 £501.

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

Flights connecting via Bangkok (BKK) have the shortest average one-way travel time: 3h 53m.

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 July 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.

£307 Cheap Flights from London to Ko Samui in 2025

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Find the cheapest flights from London to Ko Samui

Round-trip

One-way

Last minute

Cheap return flights

05:45 - 20:25LGW-USM

32h 40m3 stops

07:00 - 18:30USM-LGW

18h 30m1 stop

£571

Find Deal

Thu, 4 Sep - Wed, 29 Oct

10:30 - 20:25LGW-USM

26h 55m2 stops

07:00 - 14:00USM-LGW

38h 00m2 stops

£590

Find Deal

Sat, 22 Nov - Sat, 6 Dec

19:30 - 17:45LHR-USM

16h 15m2 stops

19:30 - 09:00USM-LHR

19h 30m2 stops

£610Austrian Airlines

Find Deal

Fri, 12 Sep - Sun, 28 Sep

19:30 - 17:45LHR-USM

16h 15m2 stops

09:15 - 07:55USM-LHR

28h 40m2 stops

£615

Find Deal

Wed, 10 Sep - Wed, 17 Sep

18:40 - 21:05LHR-USM

19h 25m2 stops

09:20 - 21:40USM-LHR

19h 20m2 stops

£625SWISS

Find Deal

Mon, 17 Nov - Mon, 24 Nov

09:00 - 21:05LHR-USM

29h 05m2 stops

09:20 - 17:50USM-LHR

39h 30m2 stops

£641SWISS

Find Deal

Thu, 30 Oct - Mon, 3 Nov

17:35 - 21:10LHR-USM

21h 35m2 stops

08:45 - 08:00USM-LHR

29h 15m2 stops

£691Air France

Find Deal

Sun, 7 Sep - Sun, 28 Sep

14:55 - 10:30LGW-USM

37h 35m2 stops

17:55 - 06:40USM-LGW

18h 45m2 stops

£719Qatar Airways

Find Deal

Thu, 11 Sep - Thu, 18 Sep

14:55 - 10:30LGW-USM

37h 35m2 stops

08:00 - 06:40USM-LGW

28h 40m2 stops

£743Qatar Airways

Find Deal

Thu, 18 Sep - Sat, 27 Sep

09:20 - 10:50LGW-USM

18h 30m1 stop

19:25 - 06:25USM-LGW

18h 00m1 stop

£794Singapore Airlines

Find Deal

Mon, 17 Nov - Mon, 24 Nov

Austrian Airlines flights from London to Ko Samui

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

Austrian Airlines

12 Sept

LHR19:30London Heathrow

16h 15m

2 stops

USM17:45Ko Samui

28 Sept

USM19:30Ko Samui

19h 30m

2 stops

LHR09:00London Heathrow

£610

Find similar

Austrian Airlines

12 Sept

LHR06:00London Heathrow

29h 45m

2 stops

USM17:45Ko Samui

19 Sept

USM19:15Ko Samui

19h 05m

2 stops

LHR08:20London Heathrow

£633

Find similar

Austrian Airlines

12 Sept

LHR19:30London Heathrow

17h 00m

2 stops

USM18:30Ko Samui

28 Sept

USM19:30Ko Samui

18h 50m

2 stops

LHR08:20London Heathrow

£634

Find similar

KLM flights from London to Ko Samui

Our best KLM deals on London to Ko Samui flight tickets

KLM

28 Sept

LHR17:10London Heathrow

19h 05m

2 stops

USM18:15Ko Samui

17 Oct

USM08:00Ko Samui

18h 55m

2 stops

LHR20:55London Heathrow

£656

Find similar

KLM

21 Oct

LHR17:10London Heathrow

19h 05m

2 stops

USM18:15Ko Samui

27 Oct

USM07:00Ko Samui

20h 50m

2 stops

LHR20:50London Heathrow

£665

Find similar

KLM

5 Aug

LCY17:50London City

18h 25m

2 stops

USM18:15Ko Samui

30 Aug

USM16:25Ko Samui

26h 50m

2 stops

LCY13:15London City

£4,561

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Thu 4/9

05:45-20:25

3 stops32h 40m

Ko Samui

Wed 29/10

07:00-18:30

1 stop18h 30m

£571

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Sat 22/11

10:30-20:25

2 stops26h 55m

Ko Samui

Sat 6/12

07:00-14:00

2 stops38h 00m

£590

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Fri 12/9

19:30-17:45

2 stops16h 15m

Ko Samui

Sun 28/9

19:30-09:00

2 stops19h 30m

£610

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Wed 10/9

19:30-17:45

2 stops16h 15m

Ko Samui

Wed 17/9

09:15-07:55

2 stops28h 40m

£615

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 17/11

18:40-21:05

2 stops19h 25m

Ko Samui

Mon 24/11

09:20-21:40

2 stops19h 20m

£625

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 30/10

09:00-21:05

2 stops29h 05m

Ko Samui

Mon 3/11

09:20-17:50

2 stops39h 30m

£641

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sun 7/9

17:35-21:10

2 stops21h 35m

Ko Samui

Sun 28/9

08:45-08:00

2 stops29h 15m

£691

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Thu 11/9

14:55-10:30

2 stops37h 35m

Ko Samui

Thu 18/9

17:55-06:40

2 stops18h 45m

£719

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Thu 18/9

14:55-10:30

2 stops37h 35m

Ko Samui

Sat 27/9

08:00-06:40

2 stops28h 40m

£743

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Mon 17/11

09:20-10:50

1 stop18h 30m

Ko Samui

Mon 24/11

19:25-06:25

1 stop18h 00m

£794

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

Stopovers

What is the cheapest month to fly to Ko Samui?

The cheapest month to fly to Ko Samui from London is in September. Flight prices, which tend to average around £794, are often lower during this time because this is during the off-season. If you don’t want to visit Ko Samui in September, then you should wait until May to fly from London, when ticket prices are also cheap, with an average price of £809.

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 £495. 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 £845.

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 £502. Flights at midday are often more expensive, with an average ticket price of £815.

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 £916 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 £796 on momondo.

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

As of July 2025, prices for London to Ko Samui flights are approximately 32% more expensive 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

Best price found	£307
Fastest flight time	14h 55m
Direct flights	None
Airports in Ko Samui	1 airport

The best one-way flight to Ko Samui from London in the past 72 hours is £307. The best return flight deal from London to Ko Samui found on momondo in the last 72 hours is £571.

The fastest flight from London to Ko Samui takes 14h 55m

There are no direct flights from London to Ko Samui. Popular non-direct routes for this connection are London Gatwick Airport - Ko Samui Airport, London Heathrow Airport - Ko Samui Airport and London Stansted Airport - Ko Samui Airport.

There is 1 airport near Ko Samui: Ko Samui (USM)

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 July 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 EVA Air, representing 41% of all bookings. The subsequent popular airlines are Thai Airways at 29%, British Airways at 10%, and Singapore Airlines at 9%.

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 £113	Free Cancellation	Rating 8.0 112 reviews	Search Bangkok Airways flights
Air France	PriceFrom £607	Free Cancellation	Rating 7.5 1,465 reviews	Search Air France flights
SWISS	PriceFrom £612	Free Cancellation	Rating 7.5 1,683 reviews	Search SWISS flights
KLM	PriceFrom £620	Free Cancellation	Rating 7.8 1,383 reviews	Search KLM flights
Emirates	PriceFrom £626	Free Cancellation	Rating 8.1 3,295 reviews	Search Emirates flights
Lufthansa	PriceFrom £639	Free Cancellation	Rating 6.8 7,265 reviews	Search Lufthansa flights
Austrian Airlines	PriceFrom £662	Free Cancellation	Rating 7.6 821 reviews	Search Austrian Airlines flights
Etihad Airways	PriceFrom £683	Free Cancellation	Rating 7.4 1,228 reviews	Search Etihad Airways flights
EVA Air	PriceFrom £736	Free Cancellation	Rating 8.4 1,221 reviews	Search EVA Air flights
British Airways	PriceFrom £745	Free Cancellation	Rating 6.6 7,215 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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Rayong Utapao Rayong Pattaya Airport

Cheap flights from London to Ko Samui from £307

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 15/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from London to Ko Samui

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Austrian Airlines flights from London to Ko Samui

Our best Austrian 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

momondo Fare Finder

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

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 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 £502. Flights at midday are often more expensive, with an average ticket price of £815.

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 July 2025, prices for London to Ko Samui flights are approximately 32% more expensive when compared to flights at the same time last year.

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

SWISS and Austrian Airlines are the most popular carriers operating from London to Ko Samui

Which airlines fly to Ko Samui?

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

Bangkok (BKK) was the most common stop: 82% 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 £501.

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

Flights connecting via Bangkok (BKK) have the shortest average one-way travel time: 3h 53m.

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

Bangkok (BKK) has the shortest average stopover time for this route: 2h 30m.

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

Best price found

Fastest flight time

Direct flights

Airports in Ko Samui

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