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LHR - USM

£670 Find cheap flights from London Heathrow Airport to Koh Samui

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Koh Samui departing on 3/6. 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
0 bags
Mon 17/6
Mon 24/6

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Koh Samui.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Koh Samui.
In the last 7 days, travellers have searched 41,904,688 times on KAYAK, and here's why:

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Cheap flight deals from Heathrow to Koh Samui (LHR-USM)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Heathrow to Koh 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 and deals for you by selecting your travel dates.
Choose your dates
09:30 - 10:30LHR-USM
19h 00m2 stops
17:55 - 06:45USM-LHR
18h 50m2 stops
£670Etihad Airways
Find Deal
Mon, 3 Jun - Thu, 13 Jun
21:50 - 08:35LHR-USM
28h 45m2 stops
21:30 - 18:45USM-LHR
27h 15m2 stops
Wed, 5 Jun - Thu, 20 Jun
17:50 - 17:05LHR-USM
17h 15m2 stops
09:20 - 21:40USM-LHR
19h 20m2 stops
Wed, 18 Sep - Wed, 30 Oct
20:35 - 08:05LHR-USM
28h 30m1 stop
09:00 - 15:20USM-LHR
37h 20m1 stop
£722Singapore Airlines
Find Deal
Tue, 5 Nov - Tue, 12 Nov
09:25 - 08:05LHR-USM
16h 40m1 stop
09:00 - 15:20USM-LHR
37h 20m1 stop
£747Singapore Airlines
Find Deal
Tue, 17 Sep - Wed, 30 Oct
21:35 - 21:00LHR-USM
17h 25m1 stop
08:00 - 19:25USM-LHR
17h 25m1 stop
£799EVA Air
Find Deal
Fri, 31 May - Sun, 16 Jun
21:35 - 21:35LHR-USM
18h 00m1 stop
09:15 - 19:25USM-LHR
16h 10m1 stop
£808EVA Air
Find Deal
Thu, 30 May - Fri, 14 Jun
21:25 - 17:45LHR-USM
14h 20m1 stop
21:15 - 07:15USM-LHR
16h 00m1 stop
£908Thai Airways
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Mon, 3 Jun - Tue, 4 Jun
06:40 - 10:45LHR-USM
22h 05m2 stops
21:15 - 07:15USM-LHR
16h 00m1 stop
£956Thai Airways
Find Deal
Mon, 3 Jun - Thu, 13 Jun
19:35 - 21:15LHR-USM
19h 40m1 stop
13:30 - 06:30USM-LHR
23h 00m1 stop
£1,110British Airways
Find Deal
Fri, 9 Aug - Wed, 21 Aug

Flights from Heathrow to Koh Samui - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from London Heathrow Airport to Koh Samui?

The average price of all flights from London Heathrow Airport to Koh Samui clicked on KAYAK for each day over the last 12 months.
For London Heathrow Airport to Koh Samui, Wednesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Koh Samui back to London Heathrow Airport, the best deals are generally found on Tuesday, with Thursday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London Heathrow Airport to Koh 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 Koh Samui is May, where tickets cost £833 on average. On the other hand, the most expensive months are December and July, where the average cost of tickets is £1,377 and £1,208 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from London Heathrow Airport to Koh Samui, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from London Heathrow Airport to Koh Samui, you should book around 4 days before departure. For the absolute cheapest price, our data suggests you should book 69 days before departure.

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

Low season

November

High season

March

Cheapest flight

£670
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly and prices are also 2% lower on average.
Flight from London Heathrow Airport to Koh Samui

When to book flights from Heathrow to Koh Samui

Are your dates flexible? Find out the best times to travel from Heathrow to Koh 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 Koh 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 Koh Samui?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Koh Samui was £851 for a return ticket.

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

    On your way to Koh 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 Koh Samui?

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

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

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

  • What is the most popular stopover when flying to Koh Samui from London Heathrow Airport?

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

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

    The two airlines most popular with KAYAK users for flights from London to Koh Samui are EVA Air and Singapore Airlines. With an average price for the route of £886 and an overall rating of 8.3, EVA Air is the most popular choice. Singapore Airlines is also a great choice for the route, with an average price of £1,094 and an overall rating of 8.2.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Koh 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 Koh 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 Koh 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 Koh 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 Koh Samui from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from London Heathrow Airport to Koh 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.
See more tips

Top 5 airlines serving from Heathrow to Koh Samui

 
See real verified KAYAK customer reviews for airlines flying from London to Koh Samui. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Koh Samui? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.3
EVA AirOverall score based on 1518 reviews
8.4Boarding
8.0Entertainment
8.2Comfort
8.6Crew
7.9Food
Airline reviews

Flight was smooth no complaint. Except maybe better food choice for the long flight…

10.0 ExcellentSarann, May 2024PNH - TPE
Read more about EVA Air reviews

Flight was smooth no complaint. Except maybe better food choice for the long flight…

Fast and efficient boarding. Flight was on time. Service was very good for our long flight. First time flying with this airline and I would highly recommend.

Poor food on board, but seats are too small and uncomfortable

Boarding is fast and easy for economy class, food was ok baggage policies are good

I hope their usb charging port works. None of their usb port is working. Boeing 777 LA to Taipei (vs)

The crew is so cold and indifferent but I have to appreciate their professionalism. The seat is too hard and not comfortable at all. Entertainment is very limited and not of many choices.

Everything was fantastic! It was a short flight but the crew really went above and beyond to make it a great flight. I felt cared for with EVA.

I enjoyed the flight it was long but very friendly crew

The ride was comfy and crew members were nice. Really appreciate the option of the airport shuttle for passengers from near by states (NJ & PA) by EVA.

Delayed due to no fault of flight crew. Efficient and worked well together.

Extra seat belt across the chest 10 minutes before taking off and 15 minutes before landing seemed excessively safe.

The transfer from Domestic and International was a bit confusing but I am easily confused. I did not eat any food, but the food on the other leg was decent. It was nice they turned the lights off on the night flight. The plane was in good shape, but was a little cramped in economy and I am small. They gave me a customs form to fill out and nobody looked at it as I went through customs. Not a bad flight.

We are satisfied with the cabin crew serviceand the quality of meals served.

Lunch Food was tasteful and had variety. Seat was comfortable. However, when I was reserving my seats during booking, the seat configuration showed was 3-3-3, but when I boarded it was a 2-4-2 configuration? Also during booking, I had also bought travel insurance together with my TG booking. However there was no confirmation of my purchase from Allianz and TG. After several emails with TG contact, sales, reservation and Allianz was i able to confirm my insurance purchase. When the policy was issued, the birth dates of me and my wife were wrongly stated and I had to go through another round of emails with Allianz to get it corrected. Otherwise any claims would be void! It was indeed not a very good booking experience!

Check in was a disaster. 90 minutes and only 2 economy check in desks open. Had to rush to catch the flight.

I couldnt go on this flight and lost all my money over 1,000 UK Pounds as my visa to Myanmar was not accepted :(

Thai Airways is one of the best airlines in the business. Looking forward to fly again with them.

After going back and forth with the airline, they never reimbursed the airline tickets. Went around asking multiple people how to get reimbursed and kept getting put back, not satisfied with their customer service.

No working jet bridge to deplane, with priority customers deplaning last. Followed by bus to terminal.

Efficient like all the other flights with them. An outstanding budget airline!

The flight crew was exceptionally good. Personal needs were well met. The food choices were very nice.

Crew experience was more transnational, seats were so close together (LtoR and FtoB) that it was difficult to enjoy much of anything. When the person in front leaned back, there is no space for me. Sadly it was a flight to be endured not experienced.

we were upgraded which was a blessing and tender mercy for us. I fell the day before and was in extreme pain from knee to shoulder. Sitting in a more comfortable seat during the flight was an unexpected blessing and experience.

My seat was sold off to someone else. Had to wait 9 hours to catch the next filght. Definitely will never use Cathay Pacific again. Bad, very bad airline. will comment on google reviews too.

Very poor check-in experience, and flight meal service was very disappointing with no drinks service or hot meal.

One of the worst flight in business class by qatar airways and I’m no stranger with qatar airways businesses class, I travelled with the extensively in the past 12 years

Very comfortable flights. Not so many new releases in terms of films.

The aircraft was slightly newer but the food was very bad. Bland and uninteresting. Nothing special at all.

The crew were fine. I didn’t enjoy the food at all. I found it unappetising and really had trouble eating it. The comfort level was fine and our return flight is with Cathay Pacific but honestly I probably wouldn’t fly Cathay Pacific again.

Everything went smooth. All flights were on time No changing gates, . No changing flights . It was like a completely different airlines tha n the last time I used Cathay Pacific . The last flight, 2 months ago, I had before this one was from Philippines also . I got changed in Manila and was told it only added 2 hours onto my flight . My 20 hour return trip ended up being 30 hours return with a 10.0 hour layover in New York with no seats anywhere . Everyone was sleeping or sitting on the floor . Unlike the hotel I was given in Manila to wait for this flight home . I never thought I would use Cathay Pacific again . But I did and this time you were great! I should have complained about the flight and layover from Hell a couple months ago. Consider that I am complaining about that august/23 flight now . Thank you got the great flying experience on my way home from philippines .

1st time with. Etihad Airways and it was amazing from check in to crew. Great flight.

In my opinion, Etihad Airways is a first rate airline except for one important element. On the day before my return flights, when I chose my seats on the Etihad website I was charged an additional $55 (US) in order to sit on the aisle. I was not at all happy about this additional "hidden" charge and I felt cheated.

The staff was very nice and polite but it was very very hot and no ways to have some fresh air. It would be nice to have more time to sleep since it was a night flight

The staff was kind and polite, but it was very very hot and no ways to have some fresh air.it would be also be nice to have more time to sleep, since it was a night flight

I WOULD ADVISE NOT TO BOOK YOUR FLIGHT ON KAYAK. THEY SHOW BETTER FARES AND AFTER I BOOKED MINE, I FIND OUT THAT IT DID NOT INCLUDE LUGGAGE. i HAD TO PAY $800 TO CHECK IN MY BAGS.

Etihad broke my suitcase Also over charged me for luggage

Entertainment did not work from flight from Abu Dhabi to Kolkata. Emirates has a much better flight in that sector.

1.Aircraft Comfort: The aircraft type was quite small with non-reclining, cramped seats that significantly lacked comfort. 2.In-flight Entertainment: There was no provision of in-flight entertainment screens or Wi-Fi for the majority of the flight. 3.Boarding Process at New Abu Dhabi Airport: Despite the move to a new airport, which promised enhanced experiences, the use of buses instead of jet bridges did not meet expectations, causing inconvenience. 4.Gate Change Communication: A last-minute gate change was poorly communicated, resulting in a long and difficult walk.

Very unfriendly team. It was very difficult to get a cup of coffee. Legroom was extremely small. Old, dilapidated plane.

Ripped off and broken seats in Business class. Seats stink and need to request the staff for additional bedsheets. Crew if very friendly though

Flight delayed an hour due to plane maintenance issues after getting in line to board. Issue was plane galley ovens which eliminated hot meals for overseas flight. Cold selections were limited due to availability. Drink and meal service (already an hour delayed) was very slow. Upon arrival in Nashville, had to sit at gate for about 15 minutes before disembarking with no explanation. Local police then boarded plane as we were disembarking so maybe that was the issue.

Boarding good. Seats uncomfortable when lie flat. Food was awful. Tasted stale and chicken was dry. No live tv or flight map. Had to pay for internet.

Poor technical details on this plane. 1) There was no WiFi on an 8 hour long-haul flight. So no work could be done. That's below the standard expected for airlines these days. 2) The power outlet at my seat was busted and not working. 3) The headphone jack was loose and I had to keep adjusting my headphones to get good reception, or when it slipped out. - The flight was delayed to due mechanics. Sometimes this can't be avoided, I understand, and it's a big inconvenience to arrive that much later when traveling across time zones (then arriving at 4am from the prior time zone). - Also unique to this flight, the northern lights were visible on the right side of the aircraft, but I only found out after we landed (b/c again no wifi). I understand there are considerations about people being out of their seats to look, but I feel extremely disappointed and resentful that I wasn't told so that I could have a chance to look at this probably once-in-a-lifetime cosmic event from a view in the sky. - Flight crew was otherwise friendly and helpful.

Our flight was delayed by over 6 hours. We then had to deplane, stay overnight in a hotel then fly out the next day, 23 hours late.

I would have preferred something lighter for the second meal. Maybe a small sandwich .

They cancelled our flight the morning of departure at 4:30am.

We were told to check our bags at the last minute, and the communication was poor.

Lost our luggage in Heathrow. Showed up 3 days into a 7 day vacation. Very inconvenient and disappointing!!

My luggage never arrived to Zurich. They can't confirm when it will arrive

Late again. 3 out of 4 late. One cancelled flight and one lost bag.

London Heathrow Airport - Koh Samui Flights

Departure:

London Heathrow Airport (undefined)United Kingdom

Destination:

Koh Samui (USM)Thailand

Return flight deals:

Koh Samui - London Heathrow Airport

Cabin classes:

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