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Cheap flights from London to Koh Samui from £366

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 Koh Samui departing on 3/3. 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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Find the cheapest flights from London to Koh Samui

Cheap return flights

These are some of the best return flight deals from London to Koh Samui that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from London to Koh Samui.

Cheap last-minute flights

Planning a quick getaway from London to Koh Samui? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Koh Samui, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from London to Koh Samui

Find recent return train or bus tickets from London to Koh Samui.

All return flight deals from London to Koh Samui

The cheapest plane tickets from London to Koh Samui found on KAYAK recently.
06:40 - 20:45LHR-USM
31h 05m2 stops
15:50 - 17:30USM-LHR
32h 40m3 stops
Sat, 15 Mar - Mon, 24 Mar
10:00 - 17:45LHR-USM
25h 45m2 stops
15:50 - 15:20USM-LHR
29h 30m2 stops
Tue, 6 May - Tue, 20 May
21:20 - 20:55LHR-USM
16h 35m1 stop
07:55 - 19:20USM-LHR
18h 25m1 stop
£805EVA Air
Find Deal
Tue, 18 Feb - Tue, 18 Mar
21:35 - 20:45LHR-USM
17h 10m1 stop
08:00 - 19:25USM-LHR
17h 25m1 stop
£807EVA Air
Find Deal
Mon, 28 Apr - Mon, 26 May
10:15 - 18:30LGW-USM
26h 15m1 stop
09:00 - 06:25USM-LGW
27h 25m1 stop
£836Singapore Airlines
Find Deal
Mon, 12 May - Mon, 26 May
22:05 - 08:00LHR-USM
26h 55m1 stop
08:55 - 19:10USM-LHR
17h 15m1 stop
£838Singapore Airlines
Find Deal
Mon, 17 Mar - Tue, 25 Mar
21:25 - 07:20LHR-USM
27h 55m1 stop
10:05 - 19:10USM-LHR
15h 05m1 stop
£911Thai Airways
Find Deal
Fri, 18 Apr - Sat, 10 May
21:35 - 07:45LHR-USM
27h 10m1 stop
08:30 - 19:35USM-LHR
18h 05m1 stop
£946Thai Airways
Find Deal
Fri, 14 Mar - Fri, 28 Mar
21:15 - 20:45LGW-USM
16h 30m1 stop
17:40 - 05:30USM-LGW
18h 50m1 stop
£1,060British Airways
Find Deal
Mon, 17 Mar - Tue, 25 Mar
21:15 - 20:45LGW-USM
16h 30m1 stop
19:10 - 05:30USM-LGW
17h 20m1 stop
£1,147British Airways
Find Deal
Sat, 8 Mar - Fri, 21 Mar
06:10 - 10:40LTN-USM
21h 30m3 stops
Mon, 3 Mar
07:05 - 21:35STN-USM
32h 30m3 stops
Tue, 3 Jun
06:40 - 18:25LGW-USM
28h 45m3 stops
Sat, 15 Mar
21:20 - 20:45LHR-USM
16h 25m1 stop
£557EVA Air
Find Deal
Tue, 18 Feb
11:50 - 07:45LHR-USM
36h 55m1 stop
£558Thai Airways
Find Deal
Mon, 3 Mar
21:35 - 20:30LHR-USM
16h 55m1 stop
£565EVA Air
Find Deal
Tue, 3 Jun
10:55 - 08:00LHR-USM
38h 05m1 stop
£592Singapore Airlines
Find Deal
Sun, 9 Feb
10:15 - 18:15LGW-USM
26h 00m1 stop
£609Singapore Airlines
Find Deal
Tue, 3 Jun
14:55 - 15:45LGW-USM
18h 50m2 stops
£684Qatar Airways
Find Deal
Sat, 12 Apr
12:30 - 16:35LHR-USM
22h 05m1 stop
£749Thai Airways
Find Deal
Tue, 1 Apr
10:30 - 20:45LGW-USM
27h 15m2 stops
21:30 - 14:00USM-LGW
23h 30m2 stops
Thu, 23 Jan - Fri, 7 Feb
15:50 - 18:15LHR-USM
19h 25m2 stops
21:30 - 11:40USM-LHR
21h 10m2 stops
Wed, 22 Jan - Wed, 29 Jan
09:10 - 10:50LHR-USM
18h 40m1 stop
08:55 - 15:35USM-LHR
37h 40m1 stop
£893Singapore Airlines
Find Deal
Wed, 22 Jan - Wed, 29 Jan
15:30 - 18:15LHR-USM
19h 45m2 stops
11:40 - 06:25USM-LHR
25h 45m2 stops
£1,020
Find Deal
Tue, 21 Jan - Wed, 26 Feb
09:10 - 10:50LHR-USM
18h 40m1 stop
13:25 - 06:45USM-LHR
24h 20m2 stops
£1,062
Find Deal
Wed, 22 Jan - Wed, 29 Jan
17:40 - 20:45LHR-USM
20h 05m2 stops
17:50 - 11:40USM-LHR
24h 50m3 stops
£1,080
Find Deal
Wed, 22 Jan - Wed, 29 Jan
15:30 - 18:15LHR-USM
19h 45m2 stops
11:40 - 06:25USM-LHR
25h 45m2 stops
£1,125
Find Deal
Tue, 21 Jan - Thu, 27 Feb
22:05 - 08:00LHR-USM
26h 55m1 stop
11:45 - 19:10USM-LHR
38h 25m1 stop
£1,172Singapore Airlines
Find Deal
Tue, 21 Jan - Wed, 26 Feb
17:50 - 19:35LHR-USM
18h 45m1 stop
11:40 - 17:30USM-LHR
36h 50m2 stops
£1,567Cathay Pacific
Find Deal
Tue, 21 Jan - Wed, 26 Feb
14:05 - 18:15STN-USM
21h 10m2 stops
19:10 - 12:05USM-STN
23h 55m2 stops
£1,947Emirates
Find Deal
Tue, 21 Jan - Thu, 27 Feb

Etihad Airways flights from London to Koh Samui

Our best Etihad Airways deals on London to Koh Samui flight tickets
Etihad Airways
31 May
LHR21:55London Heathrow
28h 20m
2 stops
USM08:15Ko Samui
24 Jun
USM19:30Ko Samui
25h 45m
2 stops
LHR15:15London Heathrow
Etihad Airways
24 Feb
LHR20:55London Heathrow
27h 50m
2 stops
USM07:45Ko Samui
4 Apr
USM17:55Ko Samui
27h 20m
2 stops
LHR15:15London Heathrow
Etihad Airways
6 Mar
LHR20:55London Heathrow
27h 35m
2 stops
USM07:30Ko Samui
20 Mar
USM18:15Ko Samui
27h 15m
2 stops
LHR14:30London Heathrow

Turkish Airlines flights from London to Koh Samui

Our best Turkish Airlines deals on London to Koh Samui flight tickets
Turkish Airlines
2 Jun
LGW10:55London Gatwick
20h 50m
2 stops
USM13:45Ko Samui
17 Jun
USM08:00Ko Samui
19h 35m
2 stops
LGW21:35London Gatwick
Turkish Airlines
6 Jun
LHR11:20London Heathrow
24h 25m
2 stops
USM17:45Ko Samui
17 Jun
USM08:00Ko Samui
18h 50m
2 stops
LHR20:50London Heathrow
Turkish Airlines
31 May
LGW17:15London Gatwick
21h 55m
2 stops
USM21:10Ko Samui
15 Jun
USM07:00Ko Samui
20h 30m
2 stops
LGW21:30London Gatwick

See travel insights to Koh Samui from

How to get the cheapest flight ticket from London to Koh 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 typical price of a round-trip flight between London and Koh Samui?

What is the cheapest month to fly to Koh Samui?

The month of September is, on average, the cheapest month to fly to Koh Samui from London, with most prices found around £851. If you aren’t able to travel during the month of September, then book flights to Koh Samui from London during November instead. Flights to Koh Samui in November, while not as cheap as those in September, still average around £878.

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

Our data shows that Monday is the least expensive day to fly to Koh Samui. Tickets to fly out on this day can be as low as £909. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from London to Koh Samui for around £990.

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

Our data shows that the cheapest London to Koh Samui flights are usually those with departure times in the evening. Our users have found flights to Koh Samui in the evening for as low as £910. Try not to purchase tickets in the morning because they tend to be around £1,109. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Koh Samui from London when booking 9 weeks ahead of your departure date. In general, you can expect to find flights to Koh Samui for around £988 when searching 9 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Koh Samui from London for as low as £880 on momondo.

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

As of January 2025, prices for London to Koh Samui flights are approximately 3% more expensive when compared to flights at the same time last year.

When to book flights from London to Koh Samui

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

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

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

Best price found

£366

Fastest flight time

14h 20m

Direct flights

None

Airports in Koh Samui

1 airport
The best one-way flight to Koh Samui from London in the past 72 hours is £366. The best return flight deal from London to Koh Samui found on momondo in the last 72 hours is £669.
The fastest flight from London to Koh Samui takes 14h 20m
There are no direct flights from London to Koh Samui. Popular non-direct routes for this connection are London Gatwick Airport - Ko Samui Airport, London Luton Airport - Ko Samui Airport and London Stansted Airport - Ko Samui Airport.
There is 1 airport near Koh Samui: Ko Samui (USM)

  • 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 15h 30m.

  • 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?

  • 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 Koh Samui?


Best airlines flying from London to Koh Samui

Compare and see reviews for airlines that fly from London to Koh Samui with momondo
Airline
Rating
Free Cancellation
Price
Bangkok AirwaysPriceFrom £110Free CancellationRating
8.0
129 reviews
Search Bangkok Airways flights
Air FrancePriceFrom £658Free CancellationRating
7.4
1,490 reviews
Search Air France flights
KLMPriceFrom £674Free CancellationRating
7.8
1,341 reviews
Search KLM flights
Etihad AirwaysPriceFrom £686Free CancellationRating
7.3
1,199 reviews
Search Etihad Airways flights
Singapore AirlinesPriceFrom £765Free CancellationRating
8.1
1,328 reviews
Search Singapore Airlines flights
EVA AirPriceFrom £784Free CancellationRating
8.4
1,255 reviews
Search EVA Air flights
British AirwaysPriceFrom £798Free CancellationRating
6.6
6,834 reviews
Search British Airways flights
Qatar AirwaysPriceFrom £858Free CancellationRating
7.5
3,754 reviews
Search Qatar Airways flights
Thai AirwaysPriceFrom £868Free CancellationRating
7.8
338 reviews
Search Thai Airways flights
EmiratesPriceFrom £872Free CancellationRating
8.1
3,356 reviews
Search Emirates flights

Travelling to a place near Koh Samui?

Book flights to Koh Samui if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan
Khanom

Why use momondo?

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

Finding the right flight to Koh 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 Koh Samui quick and easy, saving you time and money.

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

Yes. All flights to Koh 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 Koh Samui?

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

Yes momondo offers price alerts on flights to Koh 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.


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