LHR - USM

£345 Find Cheap Flights from London Heathrow Airport to Ko Samui – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Ko Samui departing on 8/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return fare
£680
Typical prices: £663-£944
SWISS
Sun 1/11Fri 13/11
LHR - USM • 2 stops
Cheapest one-way flight
£345
Typical prices: £557-£600
Multiple Airlines
Tue 8/9
LHR - USM • 3 stops
Direct flights
Not available
There are currently no direct flights between Heathrow and Ko Samui. You’ll need at least 1 connection.
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Top stopover airports
Cheapest • Avg £436 (return)
Shortest trip • 14h 00m (one-way)
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Avoid delays
Most punctual • 95% 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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Flight Deals

Cheap Flights from Heathrow to Ko Samui (LHR-USM)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Ko Samui that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Ko Samui

Sun, 1 Nov - Fri, 13 Nov
SWISS Logo
06:00 - 15:10LHR  London Heathrow-USM Ko Samui
26h 10m2 stops Zurich Phuket City
SWISS Logo
10:00 - 08:05USM  Ko Samui-LHR London Heathrow
29h 05m2 stops Bangkok Suvarnabhumi Zurich
£680SWISS
Sun, 1 Nov - Mon, 16 Nov
SWISS Logo
09:00 - 15:10LHR  London Heathrow-USM Ko Samui
23h 10m2 stops Zurich Phuket City
SWISS Logo
10:00 - 08:05USM  Ko Samui-LHR London Heathrow
29h 05m2 stops Bangkok Suvarnabhumi Zurich
£680SWISS
Mon, 30 Nov - Wed, 16 Dec
Multiple Airlines Logo
06:00 - 15:35LHR  London Heathrow-USM Ko Samui
26h 35m2 stops Vienna Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
09:20 - 08:05USM  Ko Samui-LHR London Heathrow
29h 45m2 stops Bangkok Suvarnabhumi Zurich
£681Multiple Airlines
Mon, 30 Nov - Wed, 16 Dec
Multiple Airlines Logo
06:00 - 15:35LHR  London Heathrow-USM Ko Samui
26h 35m2 stops Vienna Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
09:20 - 08:05USM  Ko Samui-LHR London Heathrow
29h 45m2 stops Bangkok Suvarnabhumi Zurich
£683Multiple Airlines
Wed, 30 Sep - Thu, 15 Oct
Austrian Airlines Logo
06:00 - 20:30LHR  London Heathrow-USM Ko Samui
32h 30m2 stops Vienna Intl Bangkok Suvarnabhumi
Austrian Airlines Logo
20:35 - 08:20USM  Ko Samui-LHR London Heathrow
17h 45m2 stops Bangkok Suvarnabhumi Vienna Intl
£686Austrian Airlines
Mon, 26 Oct - Sun, 1 Nov
Austrian Airlines Logo
06:00 - 19:50LHR  London Heathrow-USM Ko Samui
30h 50m2 stops Vienna Intl Bangkok Suvarnabhumi
Austrian Airlines Logo
20:30 - 08:20USM  Ko Samui-LHR London Heathrow
42h 50m2 stops Bangkok Suvarnabhumi Vienna Intl
£707Austrian Airlines
Sun, 15 Nov - Tue, 24 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
£723Air France
Sun, 15 Nov - Tue, 24 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
£723Air France
Wed, 30 Sep - Thu, 15 Oct
Etihad Airways Logo
21:45 - 07:10LHR  London Heathrow-USM Ko Samui
27h 25m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
Etihad Airways Logo
18:55 - 12:45USM  Ko Samui-LHR London Heathrow
23h 50m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
£752Etihad Airways
Sat, 10 Oct - Sat, 24 Oct
Etihad Airways Logo
21:45 - 07:10LHR  London Heathrow-USM Ko Samui
27h 25m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
Etihad Airways Logo
17:25 - 13:05USM  Ko Samui-LHR London Heathrow
25h 40m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
£753Etihad Airways
Booking Insights

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

Get data-powered insights and trends into flights from Heathrow 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 Heathrow Airport to Ko Samui?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London Heathrow Airport to Ko Samui departing in November.

Flight prices are below average for this route right now.

Flights to Ko Samui from London Heathrow Airport usually cost between £774 and £1,086 in November.
The lowest price found in the past 5 days was £680 on SWISS (1 Nov–13 Nov).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Ko Samui, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Heathrow Airport to Ko Samui is November, where tickets cost £786 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £1,218 and £987 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to Ko Samui, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from London Heathrow Airport 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 14 weeks before departure.

Expert advice

Expert advice for your flight from Heathrow to Ko Samui

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialising in airline interiors and regulations. 10 years ago, she pivoted to journalism. She shares her insights in leading aviation, travel and business publications and on her site, FlightChic.

Duncan Madden

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Good to know - Cheap tickets from London Heathrow Airport to Ko Samui

Low season

November

Cheapest flight

£345
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly and prices are also 3% lower on average.
Flight from London Heathrow Airport to Ko Samui

When to book flights from Heathrow to Ko Samui

Are your dates flexible? Find out the best times to travel from Heathrow to Ko Samui based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to Ko Samui flights

  • How do you get from downtown London to London Heathrow Airport?

    London Heathrow’s central bus station operates 24h, and it is a few minutes’ walk from Terminal 2 and 3. National Express and Megabus operate buses from various destinations in the city to the airport. Several car rental services, including Hertz, Europcar, SIXT, and Budget, have pickup points across London city. Piccadilly Line trains, rideshare cabs, the Heathrow Express train are alternative transfer options from downtown London to Heathrow.

  • Are there designated smoking areas at London Heathrow?

    There are no designated smoking zones past the security area. Passengers in transit aren’t permitted to smoke during the connection process. Smoking areas are located outside the terminal, so you will have to pass through security control before being allowed into the departure lounge.

  • Are there lounges at London Heathrow?

    There are numerous lounges at London Heathrow, including Plaza Premium Lounge in Terminal 2 and Club Aspire in Terminal 3. Terminal 4 users will have access to Sky Lounge, while Terminal 5 users can take advantage of Aspire Lounge & Spa.

  • Are there lounges at Koh Samui Airport?

    There are lounges for arriving passengers at Koh Samui Airport, irrespective of their airline. You can access a lounge through a membership program or purchase a lounge pass or pay at the door. Blue Ribbon Club Lounge is available at all terminals, and its services include restrooms, reading areas, magazines and newspapers, beverages, foods, and Thai massage.

  • Are there transportation options from Koh Samui Airport to the city centre?

    Taxis from the airport to the city centre are readily available in the ground transportation area. Ride-share and private minivans are a cheaper alternative transfer option to Chaweng Beach. A taxi ride to Chewang Beach from the airport takes around 9min, and it costs approximately ฿120 (£3).

  • Where do you fly through from London Heathrow to Samui Airport?

    Flights from London Heathrow to Samui Airport stops at least twice at Zurich and Bangkok before the plane touches down at Samui Airport. You may also fly to Samui Airport from Heathrow through Vienna and Bangkok, but your flight will be a little longer.

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

    In the last 5 days, the lowest price for a flight from London Heathrow Airport to Ko Samui was £345 for a one-way ticket and £680 for a return.

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

    On your way to Ko Samui, you’ll fly out from London Heathrow. You’ll be landing at Ko Samui.

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

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

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

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between London Heathrow Airport 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 Heathrow Airport?

    Bangkok is the most popular stopover city among KAYAK users travelling from London Heathrow Airport 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 £846 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 £949 and an overall rating of 8.2.

  • How does KAYAK find such low prices on flights from London Heathrow Airport 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 Heathrow Airport to Ko Samui.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport 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 Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport 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 Heathrow Airport with another airline.

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

  • Koh Samui Airport is the hub for Bangkok Airlines. Airlines that operate flights from London Heathrow to Kho Samui Airport include SWISS, Bangkok Airlines, Turkish Airlines, and Etihad Airways.
  • There are no baggage storage and lockers at Koh Samui Airport (USM), but there are free luggage trolleys to help you move with your bags from one terminal to another
  • There are several ways to keep yourself engaged as you await your flight from London Heathrow (LHR) to Koh Samui. Head to Terminal 5 and find an art gallery near Premium Check-in counters.
  • Heathrow Airport has observation areas at the Wondertree in Terminal 2 and the Traveller Lounge in Terminal 3. If you are in Terminal 5, head to Gates 15 and 16 and watch planes as they land and take off in the Southern Runway. The Gordon Ramsay Plane Food at Terminal 5 offers fantastic viewing points.
  • London Heathrow offers resting zones with recliner seats across all terminals. Terminal 3 Departures level has a resting zone with snack machines, lounges, and sofas.

Everything you need to know for your flight from Heathrow to Ko Samui

Information on your arrival and departure airports