USM - LON

£247 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
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41 299 237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest return fare
£696
Multiple Airlines
Thu 26/3Thu 16/4
USM - LGW • 3 stops
Cheapest one-way flight
£247
Typical prices: £451-£675
Multiple Airlines
Thu 7/5
USM - LHR • 3 stops
Advice from real travellers
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
Cheapest • from £796 (return)
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Ko Samui and London. You’ll need at least 1 connection.
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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!
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

Thu, 26 Mar - Thu, 16 Apr
Multiple Airlines Logo
08:55 - 19:00
USM
-
LGW
41h 05m
3 stops
Multiple Airlines Logo
17:30 - 21:35
LGW
-
USM
22h 05m
3 stops
£696Multiple Airlines
Thu, 26 Mar - Thu, 16 Apr
Multiple Airlines Logo
08:55 - 06:20
USM
-
LGW
28h 25m
2 stops
Multiple Airlines Logo
17:30 - 21:35
LGW
-
USM
22h 05m
3 stops
£696Multiple Airlines
Thu, 26 Mar - Thu, 16 Apr
Multiple Airlines Logo
08:15 - 06:20
USM
-
LGW
29h 05m
2 stops
Multiple Airlines Logo
18:00 - 08:25
LGW
-
USM
32h 25m
2 stops
£701Multiple Airlines
Mon, 27 Apr - Mon, 11 May
Multiple Airlines Logo
06:00 - 18:45
USM
-
LHR
18h 45m
2 stops
Multiple Airlines Logo
09:30 - 17:05
LHR
-
USM
25h 35m
2 stops
£711Multiple Airlines
Sat, 25 Apr - Sat, 2 May
Multiple Airlines Logo
08:40 - 06:55
USM
-
LGW
28h 15m
2 stops
Multiple Airlines Logo
17:35 - 21:35
LGW
-
USM
22h 00m
3 stops
£720Multiple Airlines
Sat, 25 Apr - Sat, 2 May
Etihad Airways Logo
08:20 - 07:00
USM
-
LHR
28h 40m
2 stops
Etihad Airways Logo
09:30 - 18:15
LHR
-
USM
26h 45m
2 stops
£796Etihad Airways
Thu, 11 Jun - Mon, 15 Jun
Etihad Airways Logo
13:30 - 15:05
USM
-
LHR
31h 35m
2 stops
Etihad Airways Logo
09:30 - 18:15
LHR
-
USM
26h 45m
2 stops
£842Etihad Airways
Tue, 21 Jul - Wed, 26 Aug
SWISS Logo
10:05 - 08:40
USM
-
LCY
28h 35m
2 stops
SWISS Logo
13:10 - 12:45
LCY
-
USM
17h 35m
2 stops
£1,123SWISS
Sat, 25 Apr - Sat, 2 May
KLM Logo
16:25 - 13:15
USM
-
LCY
26h 50m
2 stops
KLM Logo
12:10 - 13:45
LCY
-
USM
19h 35m
2 stops
£2,391KLM
Sat, 25 Apr - Sat, 2 May
KLM Logo
16:25 - 13:15
USM
-
LCY
26h 50m
2 stops
KLM Logo
12:10 - 14:45
LCY
-
USM
20h 35m
2 stops
£2,422KLM
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.
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 Ko Samui to London

Cheapest flight£247
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 £247 for a one-way ticket and £696 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, EVA Air or Austrian Airlines?

    The two airlines most popular with KAYAK users for flights from Ko Samui to London are EVA Air and Austrian Airlines. With an average price for the route of £1,047 and an overall rating of 8.4, EVA Air is the most popular choice. Austrian Airlines is also a great choice for the route, with an average price of £760 and an overall rating of 7.6.

  • 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.
8.4
EVA AirOverall score based on 1370 reviews
8.1Food
8.3Comfort
8.0Entertainment
8.6Crew
8.4Boarding
Airline reviews

What could have been better, was we were delayed from takeoff for two hours. Initially we were informed that we were delayed for refueling. Then we taxied out on the tarmac, then just waited there for a long time, with no explanation of the delay. Were we just waiting on takeoff clearance or was there some other reason for the delay? The pilot, nor none of the crew informed us passengers. That was not good customer service. That needs to be improved, whenever a delay, inform the passengers for the reason.

6.0 GoodVincent, Mar 2026
TPE - IAH
Read more EVA Air reviews

What could have been better, was we were delayed from takeoff for two hours. Initially we were informed that we were delayed for refueling. Then we taxied out on the tarmac, then just waited there for a long time, with no explanation of the delay. Were we just waiting on takeoff clearance or was there some other reason for the delay? The pilot, nor none of the crew informed us passengers. That was not good customer service. That needs to be improved, whenever a delay, inform the passengers for the reason.

More new and classic movies in English. Boarding was a bit chaotic. Nore, clearer information during boarding to customers.

Premium Economy seats were more comfortable than other airlines I have recently been on. Great staff. Food was unremarkable.

Very nice, I feel I got good value for the price.

Amazing one of the best airlines i have ever traveled with. I live with medical issues called psoriatic arthritis and was in pain on the flight. The flight crew made sure I had fresh ice pack ever hour. Going above an beyond with service and care ⭐️⭐️⭐️⭐️⭐️.

Flight attendants were very helpful and nice. Would be nice to board on time.

Excess baggage fees are outrageous ($250 per bag). Flight crew and planes are nice.

We were very impressed with the modern plane its amenities, as well as the services of flight attendants.

Seats. there's no way to go to the washroom when you’re seated in the middle without bothering the person beside you.

Service in BKK was very good at answering our question about our canceled flight from Taipei to San Francisco. Did like the lead time about the canceled flight from Taipei to San Francisco and was not given the best options.

We were delayed three hours from Montenegro to Vienna on our outbound flight and then rebooked an extra leg on our trip to the US. Our bags, which Austrian made us check in in Montenegro even though the flight was barely half full, didn't find us for ten days. Then, when we asked for compensation for the delay we were given the runaround that the flight originated outside of the EU. Next time we fly Turkish Air.

My Austrian Air flight from Montenegro to Vienna was delayed by three hours because their plane de-icer was broken and they had to wait for the sun to come up before the ice could melt. This meant we missed our United flight altogether. So I can't speak about United, but I was not impressed by Austrian Air. They made us check in two carry on bags for a 60% full flight, and the bags didn't find us in the US for ten days. The re-routing they arranged included an extra leg, a midnight taxi ride across New Jersey and New York, and a five hour sleep in a hotel. Not impressed.

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.

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.

Very limited legroom in a 10 hour flight.very old plane.

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.

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

Information on your arrival and departure airports