LON - USM

£295 Find Cheap Flights from London to Ko Samui – Compare and Save

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Everything you should know

Cheapest return fare
£678
Typical prices: £833-£1,229
Austrian Airlines, SWISS
Mon 30/11Wed 23/12
LHR - USM • 2 stops
Cheapest one-way flight
£304
Multiple Airlines
Thu 17/9
LTN - USM • 3 stops
Direct flights
Not available
There are currently no direct flights between London and Ko Samui. You’ll need at least 1 connection.
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Top stopover airports
Cheapest • Avg £407 (return)
Shortest trip • 14h 00m (one-way)
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Avoid delays
Most punctual • 94% on-time
Best time • Fewest delays
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When to book
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 20% compared to booking last minute.
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When to travel
Cheapest • 15% price drop
Most popular
Good to know
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We hope you love your trip to Ko Samui!
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Booking Insights
Flight Deals

Cheap Flights from London to Ko Samui (LON-USM)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to Ko Samui

Mon, 30 Nov - Wed, 23 Dec
Multiple Airlines Logo
06:00 - 15:35LHR  London Heathrow-USM Ko Samui
26h 35m2 stops Vienna Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
10:00 - 08:05USM  Ko Samui-LHR London Heathrow
29h 05m2 stops Bangkok Suvarnabhumi Zurich
£678Multiple Airlines
Mon, 30 Nov - Wed, 23 Dec
Multiple Airlines Logo
06:00 - 15:35LHR  London Heathrow-USM Ko Samui
26h 35m2 stops Vienna Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
10:00 - 08:05USM  Ko Samui-LHR London Heathrow
29h 05m2 stops Bangkok Suvarnabhumi Zurich
£678Multiple Airlines
Tue, 24 Nov - Thu, 17 Dec
SWISS Logo
09:00 - 10:40LHR  London Heathrow-USM Ko Samui
18h 40m2 stops Zurich Phuket City
SWISS Logo
10:00 - 21:40USM  Ko Samui-LHR London Heathrow
18h 40m2 stops Bangkok Suvarnabhumi Zurich
£685SWISS
Sun, 8 Nov - Wed, 18 Nov
SWISS Logo
06:00 - 15:10LHR  London Heathrow-USM Ko Samui
26h 10m2 stops Zurich Phuket City
SWISS Logo
10:00 - 21:40USM  Ko Samui-LHR London Heathrow
18h 40m2 stops Bangkok Suvarnabhumi Zurich
£700SWISS
Sat, 27 Feb - Sat, 20 Mar
Austrian Airlines Logo
19:25 - 19:50LHR  London Heathrow-USM Ko Samui
17h 25m2 stops Vienna Intl Bangkok Suvarnabhumi
Austrian Airlines Logo
10:00 - 21:40USM  Ko Samui-LHR London Heathrow
18h 40m2 stops Bangkok Suvarnabhumi Vienna Intl
£710Austrian Airlines
Thu, 25 Feb - Fri, 12 Mar
Austrian Airlines Logo
09:05 - 15:40LHR  London Heathrow-USM Ko Samui
23h 35m2 stops Vienna Intl Bangkok Suvarnabhumi
Austrian Airlines Logo
09:20 - 21:40USM  Ko Samui-LHR London Heathrow
19h 20m2 stops Bangkok Suvarnabhumi Vienna Intl
£719Austrian Airlines
Mon, 9 Nov - Wed, 18 Nov
Air France Logo
17:35 - 21:05LHR  London Heathrow-USM Ko Samui
20h 30m2 stops Paris Charles de Gaulle Singapore Changi
Air France Logo
07:55 - 21:25USM  Ko Samui-LHR London Heathrow
20h 30m2 stops Bangkok Suvarnabhumi Paris Charles de Gaulle
£722Air France
Wed, 11 Nov - Tue, 17 Nov
Air France Logo
17:35 - 21:05LHR  London Heathrow-USM Ko Samui
20h 30m2 stops Paris Charles de Gaulle Singapore Changi
Air France Logo
07:55 - 21:25USM  Ko Samui-LHR London Heathrow
20h 30m2 stops Bangkok Suvarnabhumi Paris Charles de Gaulle
£722Air France
Sun, 8 Nov - Wed, 18 Nov
Qatar Airways Logo
08:40 - 09:20LGW  London Gatwick-USM Ko Samui
17h 40m2 stops Doha Hamad Intl Bangkok Suvarnabhumi
Qatar Airways Logo
15:35 - 05:55USM  Ko Samui-LGW London Gatwick
21h 20m2 stops Bangkok Suvarnabhumi Doha Hamad Intl
£729Qatar Airways
Mon, 25 Jan - Mon, 15 Feb
Qatar Airways Logo
08:35 - 09:20LGW  London Gatwick-USM Ko Samui
17h 45m2 stops Doha Hamad Intl Bangkok Suvarnabhumi
Qatar Airways Logo
15:05 - 05:55USM  Ko Samui-LGW London Gatwick
21h 50m2 stops Phuket City Doha Hamad Intl
£789Qatar Airways
Booking Insights

KAYAK’s insights & trends for London to Ko Samui flights

Get data-powered insights and trends into flights from London to Ko Samui to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from London to Ko Samui?

Flight prices are below average for this route right now.

Flights to Ko Samui from London usually cost between £784 and £939 in November.
The lowest price found in the past 5 days was £678 on Multiple Airlines (30 Nov–23 Dec).

What is the cheapest month to fly from London to Ko Samui?

The cheapest month for flights from London to Ko Samui is November, where tickets cost £791 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £1,362 and £1,004 respectively.

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

To get a below average price on the flight from London to Ko Samui, you should book around 2 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know - Cheap tickets from London to Ko Samui

Low season

November

Cheapest flight

£295
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly (56% more expensive on average)
Flight from London Stansted Airport to Ko Samui

When to book flights from London to Ko Samui

Are your dates flexible? Find out the best times to travel from London to Ko Samui based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

FAQs for booking flights from London to Ko Samui

  • Are some flights on this route more carbon efficient than others?

    Thai Airways is a good airline to choose if you're looking to reduce your carbon footprint on your flight from London to Koh Samui. Typically leaving twice daily, just after noon and in the evening, these flights emit as around 35% less CO2 than a standard one. This is a one-stop route that takes around 14-16 hours. You'll stop at Bangkok Suvarnabhumi Airport (BKK) for about 1 hour to change planes.

  • Do the airports offer limited-mobility assistance?

    All London airports conform to the UK's national accessibility requirements. They are fully wheelchair accessible and also have facilities for travellers with hidden disabilities, like induction loops. Yellow lanyards are available to make it easier for assistance staff to spot you. You can also book personal assistance (at least 48 hours in advance) through your airline or travel agent. Koh Samui Airport is fully wheelchair accessible, with dedicated assistance for people with decreased mobility. Staff are constantly on hand and there's no need to book.

  • Can I hire a car at Koh Samui International Airport?

    About a half dozen of the world's most popular car hire companies have branches at Koh Samui Airport. It's a relatively small airport, so you won't have any trouble spotting these in the Arrivals terminal once you've claimed your luggage and passed through customs. As car stocks are limited, it's wise to book in advance.

  • How do I get from Koh Samui International Airport to the town centre?

    Koh Samui Airport is near the town of Bo Phut, a little way north of the island's main city of Chaweng. If you don't hire a car, your transport options to get to Bo Phut are to catch a taxi or an airport shuttle, both of which take about 10 minutes to make the trip. Getting directly to Chaweng takes roughly the same amount of time using the same transport modes, give or take a couple of minutes.

  • What is the cheapest flight from London to Ko Samui?

    In the last 5 days, the lowest price for a flight from London to Ko Samui was £304 for a one-way ticket and £678 for a return.

  • Which airports will I be using when flying from London to Ko Samui?

    London has 5 major airports: London City, London Gatwick, London Heathrow, London Luton, and London Stansted. Ko Samui is the only airport in Ko Samui. You’ll usually find the cheapest deals if you fly from London City.

  • Which aircraft models fly most regularly from London to Ko Samui?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London to Ko Samui?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between London and Ko Samui, with SkyTeam being the most commonly used for this route.

  • What is the most popular stopover when flying to Ko Samui from London?

    Bangkok is the most popular stopover city among KAYAK users travelling from London to Ko Samui.

  • Which is the best airline for flights from London to Ko Samui, EVA Air or Singapore Airlines?

    The two airlines most popular with KAYAK users for flights from London to Ko Samui are EVA Air and Singapore Airlines. With an average price for the route of £859 and an overall rating of 8.5, EVA Air is the most popular choice. Singapore Airlines is also a great choice for the route, with an average price of £871 and an overall rating of 8.2.

  • How does KAYAK find such low prices on flights from London to Ko Samui?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Ko Samui.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Ko Samui?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ko Samui from London is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Ko Samui?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Ko Samui with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Ko Samui?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ko Samui from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from London to Ko Samui

  • Koh Samui is a resort island off Thailand's coast. To visit mainland cities like Phuket and Bangkok, you can catch one of the dozens of daily flights on Bangkok Airways or Thai AirAsia.
  • If you're flying to Koh Samui with children, Heathrow (LHR) and Gatwick (LGW) are convenient airports. They have supervised Stay & Play areas and Kids' Zones, where youngsters can amuse themselves while waiting for your flight.
  • EVA Air offers one of the more comfortable economy-class flights from London to Koh Samui. You can enjoy on-demand video, with power and USB outlets built into your seat. You'll generally also be served a meal.
  • Koh Samui Airport (USM) is owned and operated by Bangkok Airways, the main local Thailand air carrier. This allows you to easily and inexpensively catch connecting domestic flights to cities in the rest of the country.
  • Choose your London airport based on where you're coming from. Heathrow is on the western outskirts, with Stansted (STN) quite a way north. Gatwick is about 30 minutes south of London, while London City Airport (LCY) is close to Central London.

More options for your flight from London to Ko Samui

Complete your trip to Ko Samui with a hotel stay or car hire