LHR - USM

$443 Find Cheap Flights from London to Ko Samui

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Ko Samui departing on 1/29. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Ko Samui

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Ko Samui, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Ko Samui, as well as popular online travel agencies
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London 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 round-trip flight deals from London to Ko Samui

Mon, Nov 24 - Wed, Dec 3
Multiple Airlines Logo
9:00 am - 9:05 pmLHR-USM
29h 05m2 stops
Multiple Airlines Logo
10:00 am - 9:40 pmUSM-LHR
18h 40m2 stops
$960Multiple Airlines
Find Deal
Thu, Apr 9 - Sun, May 10
Etihad Airways Logo
8:55 pm - 7:20 amLHR-USM
28h 25m2 stops
Etihad Airways Logo
8:50 pm - 3:15 pmUSM-LHR
24h 25m2 stops
$970Etihad Airways
Find Deal
Sun, Jan 11 - Mon, Jan 26
Multiple Airlines Logo
7:25 pm - 6:55 pmLHR-USM
16h 30m2 stops
Multiple Airlines Logo
10:00 am - 9:40 pmUSM-LHR
18h 40m2 stops
$993Multiple Airlines
Find Deal
Tue, Nov 18 - Tue, Nov 25
Etihad Airways Logo
8:50 am - 6:15 pmLHR-USM
26h 25m2 stops
Etihad Airways Logo
8:20 pm - 6:40 amUSM-LHR
41h 20m2 stops
$1,005Etihad Airways
Find Deal
Sun, Mar 22 - Wed, Apr 22
Multiple Airlines Logo
1:55 pm - 3:40 pmLHR-USM
18h 45m2 stops
Multiple Airlines Logo
4:25 pm - 7:55 amUSM-LHR
21h 30m2 stops
$1,025Multiple Airlines
Find Deal
Wed, Jan 7 - Wed, Jan 28
SWISS Logo
6:40 pm - 9:05 pmLHR-USM
19h 25m2 stops
SWISS Logo
9:20 am - 9:40 pmUSM-LHR
19h 20m2 stops
$1,036SWISS
Find Deal
Tue, Nov 18 - Tue, Nov 25
Singapore Airlines Logo
10:40 am - 6:50 pmLHR-USM
25h 10m1 stop
Singapore Airlines Logo
6:05 pm - 5:55 amUSM-LHR
18h 50m1 stop
$1,056Singapore Airlines
Find Deal
Mon, Nov 24 - Wed, Dec 3
Singapore Airlines Logo
10:40 am - 5:10 pmLHR-USM
23h 30m1 stop
Singapore Airlines Logo
6:05 pm - 5:55 amUSM-LHR
18h 50m1 stop
$1,078Singapore Airlines
Find Deal
Mon, Nov 24 - Wed, Dec 3
EVA Air Logo
9:20 pm - 8:15 pmLHR-USM
15h 55m1 stop
EVA Air Logo
9:20 am - 7:05 pmUSM-LHR
16h 45m1 stop
$1,111EVA Air
Find Deal
Sun, Jan 11 - Wed, Jan 28
SWISS Logo
6:40 pm - 9:05 pmLHR-USM
19h 25m2 stops
SWISS Logo
9:20 am - 8:05 amUSM-LHR
29h 45m2 stops
$1,125SWISS
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
BA's premium economy offers more legroom on long-hauls.
JetBlue provides free gate-to-gate Wi-Fi on flights.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Etihad Airways
Cheapest • from $970 (round-trip)
EVA Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
May
Cheapest • 14% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$960
Typical prices: $1,255-$1,597
Multiple Airlines
Mon 11/24Wed 12/3
LHR - USM • 2 stops
Cheapest one-way
$443
Typical prices: $756-$932
Multiple Airlines
Thu 1/29
LHR - USM • 2 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ko Samui!
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 round-trip flight from London Heathrow Airport to Ko Samui?

This analysis is based on the cheapest round-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.

What’s the cheapest day of the week to fly from London to Ko Samui?

The average price of all round-trip flights from London Heathrow Airport to Ko Samui clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Ko Samui on a Friday and more expensive on a Tuesday. On your return trip to London, you should consider flying back on a Wednesday, and avoid Thursdays for better deals.

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 May, where tickets cost $1,054 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $1,675 and $1,500 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 4 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Expert advice

Expert advice for your flight from London to Ko Samui

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
American Airlines

Consider Main Cabin Extra for early boarding and complimentary drinks on long-haul flights.


American Airlines offers Premium Economy with upgraded seats and amenity kits for long-haul flights.

JetBlue

JetBlue's Mint cabin offers lie-flat seats and priority boarding on transatlantic flights.


Enjoy free gate-to-gate Wi-Fi and live TV on JetBlue flights.

Read more about JetBlueby Harriet Baskas
Delta

Delta's Delta One Suites offer privacy with sliding doors on select aircraft.


Delta offers free Wi-Fi for SkyMiles members on most flights.

Read more about Deltaby Stefanie Waldek
Iberia

Iberia's Business Class offers all-aisle access and Wi-Fi on long-haul flights.


Preview in-flight dining online for Iberia's Premium Economy long-haul flights.

Read more about Iberiaby Marisa Garcia
Virgin Atlantic

Virgin Atlantic's Upper Class offers fully flat beds and exclusive lounges.


Access Upper Class Wing at Heathrow for private check-in and security.

British Airways

BA's premium economy offers more legroom and priority boarding on long-haul flights.


Check for modern aircraft on BA long-haul flights for better comfort.

Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines and JetBlue

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on Delta

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa Garcia

Marisa Garcia

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, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Laura Ratliff

Laura Ratliff

Expert on Virgin Atlantic

Laura Ratliff

Laura Ratliff

Laura Ratliff is a New York-based writer and editor. She lives in downtown Brooklyn with her husband and their beloved dogs. Originally from Texas, she now considers New York City her home. She typically spends more than 200,000 miles on a plane each year and stays in plenty of hotels.

Read more
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan Madden

Duncan Madden

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.

Read more

Good to know

Low seasonOctober
Cheapest flight$443
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from London 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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 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 3 days, the lowest price for a flight from London Heathrow Airport to Ko Samui was $443 for a one-way ticket and $960 for a round-trip.

  • Do I need a passport to fly between London and Ko Samui?

    Yes

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

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

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

    Star Alliance is the only airline alliance operating flights between London and Ko Samui.

  • 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 round-trip ticket. You could then fly to Ko Samui with an airline and back to London with another airline. Booking your flights between London and USM can sometimes prove cheaper using this method.

  • 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 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.

Reviews of the top airline flying from London to Ko Samui

 
See real verified KAYAK customer reviews for airlines flying from London to Ko 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 London to Ko 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.
8.4
EVA AirOverall score based on 1265 reviews
8.4Boarding
8.0Entertainment
8.6Crew
8.3Comfort
8.1Food
Airline reviews

It was very long way flight but its good I like the food they serve in EVA air its really good!

8.0 ExcellentMary Grace, Oct 2025MNL - TPE
Read more EVA Air reviews

It was very long way flight but its good I like the food they serve in EVA air its really good!

everything was so good! Especially Food. It was the best I've ever had! However,I requested to add mileage point to Star alliance group ANA; it hasn't been added yet.... 😞

The crews are very efficient. Other airlines should learn from them when it comes to boarding and departing from the airplane. They also display efficiency in serving meals. They don't keep the aisles blocked for hours like some other airlines. The food is poor. Generally the food was unrecognizable and poorly prepared. The only thing that made it better than US flag carriers is that there was a fresh fruit bowl with each meal.

The EVA air staff at Narita did a terrible job with signage and communication. Despite getting to the airport hours before, they had me queue in line and did not communicate that passengers for Kaohsiung need to step out of line to go to a different line. If you put the flight number at the front of the line, people will think that’s their line. If your staff walk silently down the line with a sign of the flight number, how are we supposed to know you want us to follow unless you speak or write that? I even asked the staff with this sign when we could check our bags and they assumed I was on the later flight to Taipei. Later, Wl only 30 minutes remaining I called for help, and the staff looked at me like I was in the wrong. I had to rush through security and customs and had no time to eat or buy a gift. I’m deeply disappointed in the way they handled it, and it caused unnecessary stress on my vacation.

Staff show very stress with delayed flight more than passenger.

Flight Attendants could have been nicer and food portions could be bigger.

The food from Los Angeles to Taipei made me throw up. The flight is also not comfort. But the staffs are very friendly and nice.

I have never heard of EVA air before but I am so happy my wife and I were able to flight on their planes twice. Everything on these flights just felt better than their competitors. As someone with longer legs any bit of extra leg spaces is appreciated. The different options for food and drinks were also a plus. They were extra careful to make sure my wife's eating restrictions were taken care for. They had a before take off and landing announcements on the built in tablets for each seat and it gave out information that was very helpful. Such as what and how to declare your items in the specific country you landed in, any odd items that may be illegal to bring it (and even the reasoning why) and any other information you might need to make your post flight experience better. Oh and the seats were more comfortable, had more ability to lean and the headrest was much better for flight sleeping. The only downside was there were "forced" ads on the tablet at take off for maybe 5-10 minutes but honestly, this flight was the cheapest option and had all the benefits listed above that is such an easy trade off. Im keeping an eye out for EVA air going forward.

I appreciate the email reminders for online check-in which made my entry to the lines less stressful. The flight was on schedule and on time. The baording staff were proactively helpful and approachable. The airplane inflight food, entertainment and comfies as well as provisions are excellent even in the economy seating. The airline transfer was smooth and easy! Luggage safe and intact! Thank you EVA airline for making my trip a reliable safe and comfortable experience.

Very smooth flight. Superb crew, great food and service. Slept most of the way. Excellent airline.

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

Information on your arrival and departure airports

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