USM - LHR

฿14,406 Find Cheap Flights from Ko Samui to London Heathrow Airport

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 Heathrow departing on 12/7. 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 Heathrow Airport

 
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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Everything you should know

Cheapest return fare
฿31,497
โอมานแอร์
Tue 15/9Tue 6/10
USM - LHR • 2 stops
Cheapest one-way flight
฿14,406
Typical prices: ฿21,445-฿23,803
Multiple Airlines
Sun 12/7
USM - LHR • 2 stops
Top airlines
Cheapest • from ฿31,497 (return)
Best reviews • 8.5 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 Heathrow. You’ll need at least 1 connection.
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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 Heathrow!
Flight Deals
Booking Insights
Flight Deals

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

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

Tue 15 Sep - Tue 6 Oct
โอมานแอร์ Logo
15:20 - 19:10
USM
-
LHR
33h 50m
2 stops
โอมานแอร์ Logo
20:50 - 16:30
LHR
-
USM
37h 40m
2 stops
฿31,497โอมานแอร์
Tue 15 Sep - Tue 6 Oct
โอมานแอร์ Logo
15:50 - 19:10
USM
-
LHR
33h 20m
2 stops
โอมานแอร์ Logo
20:50 - 20:50
LHR
-
USM
18h 00m
2 stops
฿31,530โอมานแอร์
Tue 15 Sep - Tue 6 Oct
กัลฟ์แอร์ Logo
14:00 - 06:55
USM
-
LHR
22h 55m
2 stops
กัลฟ์แอร์ Logo
10:00 - 12:45
LHR
-
USM
20h 45m
2 stops
฿35,917กัลฟ์แอร์
Tue 15 Sep - Tue 6 Oct
กัลฟ์แอร์ Logo
14:35 - 15:20
USM
-
LHR
30h 45m
2 stops
กัลฟ์แอร์ Logo
10:00 - 13:45
LHR
-
USM
21h 45m
2 stops
฿36,081กัลฟ์แอร์
Tue 27 Oct - Wed 25 Nov
Multiple Airlines Logo
09:20 - 05:55
USM
-
LHR
27h 35m
2 stops
Multiple Airlines Logo
13:45 - 14:55
LHR
-
USM
18h 10m
2 stops
฿36,244Multiple Airlines
Tue 15 Sep - Sun 27 Sep
Multiple Airlines Logo
11:45 - 07:30
USM
-
LHR
25h 45m
2 stops
Multiple Airlines Logo
10:00 - 12:45
LHR
-
USM
20h 45m
2 stops
฿36,637Multiple Airlines
Wed 5 Aug - Wed 2 Sep
Multiple Airlines Logo
19:00 - 12:05
USM
-
LHR
23h 05m
2 stops
Multiple Airlines Logo
09:45 - 10:30
LHR
-
USM
18h 45m
2 stops
฿36,670Multiple Airlines
Thu 29 Oct - Thu 26 Nov
สวิส อินเตอร์เนชั่นแนล แอร์ไลน์ Logo
09:20 - 21:40
USM
-
LHR
19h 20m
2 stops
สวิส อินเตอร์เนชั่นแนล แอร์ไลน์ Logo
18:40 - 21:05
LHR
-
USM
19h 25m
2 stops
฿39,256สวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Tue 27 Oct - Wed 25 Nov
Multiple Airlines Logo
10:00 - 07:20
USM
-
LHR
28h 20m
3 stops
Multiple Airlines Logo
13:45 - 14:55
LHR
-
USM
18h 10m
2 stops
฿39,518Multiple Airlines
Mon 6 Jul - Mon 13 Jul
Multiple Airlines Logo
20:50 - 19:10
USM
-
LHR
28h 20m
2 stops
Multiple Airlines Logo
08:25 - 11:05
LHR
-
USM
20h 40m
2 stops
฿39,584Multiple Airlines
Booking Insights

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

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

Which airlines provide the cheapest flights from Ko Samui to London Heathrow Airport?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 3 days, the cheapest return tickets from Ko Samui to London Heathrow Airport were found on โอมานแอร์ (฿31,497) and กัลฟ์แอร์ (฿35,917).

Good to know

Cheapest flight฿14,406
Flight from Ko Samui to London Heathrow Airport

When to book flights from Ko Samui to Heathrow

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

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

    In the last 3 days, the lowest price for a flight from Ko Samui to London Heathrow Airport was ฿14,406 for a one-way ticket and ฿31,497 for a return.

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

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

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

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

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

    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 Heathrow Airport.

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

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

    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 Heathrow Airport 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 Heathrow Airport?

    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 Heathrow Airport 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 airline flying from Ko Samui to Heathrow

 
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 Heathrow? 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.
8.5
EVA AirOverall score based on 1472 reviews
8.4Boarding
8.7Crew
8.0Entertainment
8.3Comfort
8.1Food
Airline reviews

The food was great; the attendants were pleasant. Waiting to onboard felt stressful, as passengers who had connecting flights at SEA had to be verified again for two things before getting a real boarding pass: passport and carry-on luggage weight. The boarding pass issued by another airline (i.e., the first leg of my trip) did not count. The S terminal at SEA was barren, with lots of sensory overloads because every airline was repeatedly broadcasting long lists of names of passengers who had not gone through that verification process. The carry-on luggage weight check seemed futile to me. I saw a woman who opened her over-weight suitcase to move some items into her shoulder bag. She still boarded with two huge bags with her. I assume this check is an endeavor of ensuring fairness of the overhead bin space or optimizing fuel efficiency when gas price is through the roof, but I don't know if either goal is achieved. Nonetheless I respect the crew's dedication to the SOP.

8.0 ExcellentAnonymous, May 2026
SEA - TPE
Read more EVA Air reviews

The food was great; the attendants were pleasant. Waiting to onboard felt stressful, as passengers who had connecting flights at SEA had to be verified again for two things before getting a real boarding pass: passport and carry-on luggage weight. The boarding pass issued by another airline (i.e., the first leg of my trip) did not count. The S terminal at SEA was barren, with lots of sensory overloads because every airline was repeatedly broadcasting long lists of names of passengers who had not gone through that verification process. The carry-on luggage weight check seemed futile to me. I saw a woman who opened her over-weight suitcase to move some items into her shoulder bag. She still boarded with two huge bags with her. I assume this check is an endeavor of ensuring fairness of the overhead bin space or optimizing fuel efficiency when gas price is through the roof, but I don't know if either goal is achieved. Nonetheless I respect the crew's dedication to the SOP.

I put the review all together for the first review

I liked that they gave us a couple of meals and drinks but the meal was not good and not many options especially if we are seated in the back of the plane.

Crew was good. Sometimes food was eh. The spaghetti is gross for me. First time i got food, they didn’t provide utensils so i ate with my hands. I was hungry. They gave it to me 20 mins later when a crew member came by. I would fly with them again. Nobody is perfect

Service was great didn't leave on time was not good

The flight from SEA to Taipei was on a Boeing 787-10. Economy seats were unacceptably cramped and the seats themselves were old and lacking cushion. I'm only 5'3" and couldn't cross my legs as my knees were up against the seat in front of me! I could not get WiFi to work most of the time on both flights and crew were invisible except to serve meals. The onboard entertainment also did not work reliably and was very hard to hear through the provided earbuds. The Asian vegetarian meals were interesting. I hope they can provide a fully vegan option though these meals seemed to be already. I appreciate their providing these meals options for vegans. I don't think I'll fly a 787-10 if I can help it. It was the definition of a sardine can in Economy.

I always preferred EVA air every time I visit Philippines. It’s just this time that I have to be very early to make sure that I don’t miss my flight due to TSA problem. There’s only one choice of food serve which you use to have 2 on our flight from Taiwan to Philippines . Otherwise I will still use EVA air in my future flight.

This flight was even more crowded that Singapore to Taipei, an extra row of seats and an additional 4th seat in the middle made it extremely crowded. No leg room, no width for room. Terribly uncomfortable flight. The food was disgusting. We will never fly EVA Air again.

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

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

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

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