USM - LON

£259 Find Cheap Flights from Ko Samui to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ko Samui to London departing on 7/5. 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 London

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ko Samui to London, 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 Ko Samui to London, as well as popular online travel agencies
Travellers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest return fare
£717
Multiple Airlines
Sun 25/1Sun 1/2
USM - LHR • 2 stops
Cheapest one-way flight
£259
Typical prices: £438-£772
Multiple Airlines
Thu 7/5
USM - LHR • 2 stops
Our travellers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Finnair’s economy comfort offers more legroom.
BA’s cabin crew are professional and proactive.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Emirates
Cheapest • from £888 (return)
Austrian Airlines
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to London!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

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

Sun, 25 Jan - Sun, 1 Feb
Multiple Airlines Logo
21:10 - 17:00
USM
-
LHR
26h 50m2 stops
Multiple Airlines Logo
21:00 - 08:25
LHR
-
USM
28h 25m2 stops
£717Multiple Airlines
Sun, 25 Jan - Sun, 1 Feb
Multiple Airlines Logo
19:45 - 16:10
USM
-
LGW
27h 25m2 stops
Multiple Airlines Logo
10:30 - 18:25
LGW
-
USM
24h 55m2 stops
£771Multiple Airlines
Sun, 25 Jan - Sun, 1 Feb
Multiple Airlines Logo
20:20 - 18:30
USM
-
LGW
29h 10m1 stop
Multiple Airlines Logo
17:00 - 07:45
LGW
-
USM
31h 45m2 stops
£852Multiple Airlines
Sun, 7 Jun - Wed, 10 Jun
Emirates Logo
16:25 - 07:05
USM
-
LHR
20h 40m2 stops
Emirates Logo
14:25 - 21:10
LHR
-
USM
24h 45m2 stops
£888Emirates
Sun, 7 Jun - Wed, 10 Jun
Emirates Logo
16:25 - 07:05
USM
-
LHR
20h 40m2 stops
Emirates Logo
09:05 - 21:10
LHR
-
USM
30h 05m2 stops
£889Emirates
Sun, 7 Jun - Wed, 10 Jun
EVA Air Logo
08:45 - 19:20
USM
-
LHR
16h 35m1 stop
EVA Air Logo
21:35 - 20:30
LHR
-
USM
16h 55m1 stop
£977EVA Air
Sun, 7 Jun - Wed, 10 Jun
EVA Air Logo
09:15 - 19:20
USM
-
LHR
16h 05m1 stop
EVA Air Logo
21:35 - 20:30
LHR
-
USM
16h 55m1 stop
£978EVA Air
Mon, 8 Jun - Wed, 10 Jun
Qatar Airways Logo
12:10 - 06:40
USM
-
LGW
24h 30m2 stops
Qatar Airways Logo
09:00 - 19:10
LGW
-
USM
28h 10m2 stops
£1,044Qatar Airways
Sun, 7 Jun - Wed, 10 Jun
British Airways Logo
13:30 - 05:25
USM
-
LHR
21h 55m2 stops
British Airways Logo
21:20 - 21:10
LHR
-
USM
17h 50m1 stop
£1,045British Airways
Mon, 8 Jun - Wed, 10 Jun
Qatar Airways Logo
11:25 - 06:40
USM
-
LGW
25h 15m2 stops
Qatar Airways Logo
09:00 - 11:55
LGW
-
USM
20h 55m2 stops
£1,048Qatar Airways
Booking Insights

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

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

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

If your flying dates are flexible, you should consider flying to London on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Ko Samui to London. For your return ticket, we recommend flying on a Wednesday and avoiding Sundays for the best deals.

Expert advice

Expert advice for your flight from Ko Samui to London

 
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.
Airlines
Finnair

Finnair’s A350 features lower cabin altitude and higher humidity for a better arrival feeling.


Finnair’s economy comfort offers more legroom for a small additional charge, enhancing comfort.

Iberia

Iberia’s business class offers roomy seating with all-aisle access and comfortable bedding.


Enjoy Spanish cuisine with two meals on Iberia long-haul flights, including breakfast and lunch or dinner.

British Airways

BA’s premium economy offers 18 cm extra legroom, priority boarding, and bigger baggage allowance.


BA’s cabin crew are professional and proactive, enhancing the flight experience.

Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel Leigh

Gabriel Leigh

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.

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, 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.

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 - Cheap tickets from Ko Samui to London

Cheapest flight£259
Flight from Ko Samui to London Heathrow Airport

When to book flights from Ko Samui to London

Are your dates flexible? Find out the best times to travel from Ko Samui to London 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 flights from Ko Samui to London

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

    In the last 3 days, the lowest price for a flight from Ko Samui to London was £259 for a one-way ticket and £717 for a return.

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

    On your way to London, you’ll fly out from Ko Samui. You’ll be landing in one of London’s 2 airports: London Gatwick or London Heathrow.

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

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

  • Which is the best airline for flights from Ko Samui to London, Austrian Airlines or Qatar Airways?

    The two airlines most popular with KAYAK users for flights from Ko Samui to London are Austrian Airlines and Qatar Airways. With an average price for the route of £762 and an overall rating of 7.6, Austrian Airlines is the most popular choice. Qatar Airways is also a great choice for the route, with an average price of £983 and an overall rating of 7.4.

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

    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 Ko Samui to London.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Ko Samui 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 Ko Samui to London?

    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 London with an airline and back to Ko Samui with another airline.

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

    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 London from Ko Samui up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Ko Samui to London

 
See real verified KAYAK customer reviews for airlines flying from Ko Samui to London. 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 Ko Samui to London? 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.
7.6
Austrian AirlinesOverall score based on 879 reviews
6.8Entertainment
6.8Food
7.6Boarding
7.3Comfort
8.1Crew
Airline reviews

Most of the crew members were rude, flight arrived late and we missed our connecting flight, they damaged my friends suitcase so badly that two wheels had been destroyed.

2.0 MediocreChristina, Nov 2025
BCN - VIE
Read more Austrian Airlines reviews

Most of the crew members were rude, flight arrived late and we missed our connecting flight, they damaged my friends suitcase so badly that two wheels had been destroyed.

Excellent flight. The crew was exceptionally attentive and organized. Attention to details is unmatched.

Loved the courtesy and punctuality. Very professional and most importantly on time.

Great! They got my vegetarian meal right, flight was comfortable, they helped store my heavy luggage. Pleasant crew and flight staff.

My layover in Vienna was supposed to be 35 minutes but because my flight was canceled I had to wait in the airport for an additional 8 hours.

The flight was delayed for 30 minutes with no apparent reason. There is no entertainment at all, and no USB or electric outlets for charging your phone or tablet.

My flight was canceled and even though I paid אם KAYAK you didn't even answer me and obviously didn't refund my money. I will never buy a ticket through you again.

Accessibility serious problems in Viena airport making it seriousely difficult in in-between gates and boarding travel. Pretens of breakfast and service care in the economy pathetic.

One thing I really liked about Austrian Airlines was that the flight attendants were very kind, and the in-flight entertainment offered many choices. One thing that could be improved is the meal service, since only a vegetarian option was offered — it would be better to have at least two choices.

Despite the booked seats in front of the land we were moved to the back of the plane even first like 8 lines were totally without pasangers. When I tried to sit on empty seat flight attendant asked me to go to my dedicated seat in the fully crowded back of the plane. She was not able to explain why. Food was very poor on flight LAX - VIE.

It was little disheartening and disappointing. Although flight staff did a good job. But customer service didn’t do anything to resolve my issue.

Plane was good Crew was good Food was just ok Could have had more entertainment options But overall good

The service was good but the food was a NO

Excellent service. The personal adaptation of menus and the individual timing of service of them is fantastic.

Crew and food was good, ok leg room if you don’t have a big box under the seat. And the seats are so narrow (I’m only 70kg), will consider an alternate airline next time

Good. It would be great if comfort seats were available

My entire row did not have power for the full duration of a 14.5 hour flight. Could not charge any devices such as laptop or phones for the entirety of the long flight. The flight attendants tried to remedy the issue by resetting the power, but were not successful. The only other solution provided was to move me to another seat on the plane which was in the middle row. I had paid for a “preferred” seat that was a window seat. This was a downgrade being offered due to the power issue.

I prebooked a comfort plus seat on this flight and therefore the flight was comfy. I got the correct seat in the correct section of the plane that I have booked, that's this. Flight was comfortable. Staff were average on the flight, appearing to be rushed and short in engagement with travellers, perhaps this to maximise there rest time on the flight.

Terrible experience resolving missed connection after flight was delayed. 3 hour queue at transit desk, not enough staff, no organisation, worst ever flying experience.

It was ok, not much more can be said, as long as airlines/aircraft manufacturers insist on cramming in as many seats as possible....best of a bad situations, seats are simply too uncomfortable to sit in for more than a few hours. Lack of flexible headrests not a help on long overnight flights either.

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

Information on your arrival and departure airports