USM - LON

£269 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 30/9. 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

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
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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, 26 Oct - Sun, 2 Nov
 Logo
18:05 - 19:10USM-LHR
32h 05m3 stops
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13:00 - 08:00LHR-USM
36h 00m3 stops
Sun, 26 Oct - Sun, 2 Nov
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18:05 - 15:55USM-LHR
28h 50m2 stops
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13:00 - 08:00LHR-USM
36h 00m3 stops
Sun, 26 Oct - Sun, 2 Nov
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15:05 - 18:30USM-LGW
34h 25m2 stops
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05:35 - 07:10LGW-USM
18h 35m2 stops
Sun, 26 Oct - Sun, 2 Nov
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18:15 - 18:30USM-LGW
31h 15m2 stops
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16:00 - 07:45LGW-USM
32h 45m1 stop
Sun, 26 Oct - Sun, 2 Nov
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15:05 - 18:30USM-LGW
34h 25m2 stops
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05:35 - 12:50LGW-USM
24h 15m3 stops
Fri, 10 Oct - Mon, 20 Oct
Qatar Airways Logo
13:30 - 06:25USM-LHR
22h 55m2 stops
Qatar Airways Logo
15:05 - 18:15LHR-USM
21h 10m2 stops
£952Qatar Airways
Find Deal
Sun, 26 Oct - Sun, 2 Nov
SWISS Logo
16:25 - 08:35USM-LCY
23h 10m2 stops
SWISS Logo
19:20 - 21:05LCY-USM
18h 45m2 stops
£1,016SWISS
Find Deal
Fri, 10 Oct - Mon, 20 Oct
EVA Air Logo
09:15 - 19:20USM-LHR
16h 05m1 stop
EVA Air Logo
21:35 - 21:35LHR-USM
18h 00m1 stop
£1,049EVA Air
Find Deal
Sun, 26 Oct - Sun, 2 Nov
Singapore Airlines Logo
12:00 - 06:25USM-LGW
25h 25m1 stop
Singapore Airlines Logo
09:20 - 11:00LGW-USM
18h 40m1 stop
£1,178Singapore Airlines
Find Deal
Fri, 10 Oct - Mon, 20 Oct
Singapore Airlines Logo
19:25 - 06:40USM-LGW
17h 15m1 stop
Singapore Airlines Logo
10:00 - 11:10LGW-USM
19h 10m1 stop
£1,443Singapore Airlines
Find Deal

Everything you should know

Our travellers' advice
AI-generated summary based on content written by travel experts
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
Qatar Airways
Cheapest • from £952 (return)
Austrian Airlines
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest return fare
£704
Multi-carrier
Sun 26/10Sun 2/11
USM - LHR • 3 stops
Cheapest one-way flight
£269
Typical prices: £419-464
Multi-carrier
Tue 30/9
USM - LHR • 2 stops
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to London!
Expert advice

Expert advice for your flight from Ko Samui to London

 
Snippets provided in this section are AI-generated based on a summarisation 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
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.

Read more about Finnairby Gabriel Leigh
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.

Read more about Iberiaby Marisa Garcia
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
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.

Good to know - Cheap tickets from Ko Samui to London

Low seasonOctober
Cheapest flight£269
Best time to beat the crowds (50% less expensive on average)
Most popular time to fly (3% more expensive on average)
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 £364 for a one-way ticket and £953 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 airline alliances offer flights from Ko Samui to London?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Ko Samui and London, with Star Alliance being the most commonly used for this 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 £753 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 £989 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 850 reviews
7.3Comfort
7.6Boarding
6.8Food
8.1Crew
6.8Entertainment
Airline reviews

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.

2.0 MediocreRon, Aug 2025DUB - FRA
Read more Austrian Airlines reviews

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.

We had a wonderful experience overall. The only issue was check-in our luggage at the Split Airport counter. It was very confusing because we needed to pay for baggage.

Quick and organized boarding process, friendly staff but not as many snacks and drinks as the previous flight overnight

Landing was a little hard. Food was not great My prior review was for the flight to nyc too

Landing was a little hard. Food was not great. No options.

Five star experience all around except for my seat, which was broken. It would only go down 70%.Of the way. It defeats the purpose of buying a business class ticket if you don’t actually get to lay flat..

I love this airline.God bless CAO and the whole staff of this company

The flight overall was good. The attendants did a good job except that 1 female had too much fragrance on. The other things that made the flight unpleasant were out of the airlines control.

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.

I had to stay in the airport 15 even with a hotel reservation..i was refused to inter to qatar cuz the hotel was outside the airport. They could have offered a solution. It was really exhausting for me and my family.

I was unable to pre purchase sear upgrades or internet. Their online site is not user friendly and poor. I felt singled out in customs. Seats are very small even for a small person.

Qatar Airways did a very good job. Flights were slightly delayed with boarding but pilots made up time by arrival. The food was OK, no better or worse than other airlines. Although it would be nice to have three meals during 16 hours flight instead of two.

I recently travelled in Business Class with Qatar Airways, and overall, it was a pleasant experience. The cabin crew stood out for their kindness and professionalism, making the journey truly comfortable. The food exceeded expectations and was exceptional in both quality and presentation. The boarding staff was courteous, though I would like to mention that the staff member responsible for checking tickets during boarding could benefit from additional training to be more welcoming. A warm and hospitable approach would enhance the passenger experience significantly. However, one aspect of the journey was particularly frustrating. The in-flight entertainment system was disappointing, as the headphones provided did not work at all due to a loose connection. This significantly impacted the experience, especially since the flight also lacked Wi-Fi service. Addressing these issues would greatly enhance the overall travel experience. Lastly, I would suggest implementing a section-wise boarding process to streamline the boarding experience and minimise potential challenges. I appreciate the efforts Qatar Airways puts into delivering high-quality service and hope to see these improvements implemented in the future.

The overall flight experience between Doha and Kolkata was satisfactory. The staff onboard were notably engaged, responsive, and enthusiastic, providing a level of service that stood out, especially when compared to the less attentive crew on the earlier leg from Heathrow to Doha. Their eagerness to assist made the journey more pleasant. Additionally, the time spent at the Silver Lounge in Doha contributed positively to the experience. The lounge offered a comfortable and relaxing environment, with adequate amenities and attentive staff. Overall, both the flight and the lounge experience in Doha met expectations, making for a smooth and satisfactory travel experience.

Delayed my flights and no communication. We end up spending 6 hrs in Doha. No food or any concern from the airline. Terrible

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

Information on your arrival and departure airports

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