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Cheap flights from Ko Samui to London Heathrow Airport from ฿14,091

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
USM — LHR
31 Jul — 7 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ko Samui to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Ko Samui to Heathrow
Explore the most affordable flight options available from Ko Samui to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 July 2026.

Sun 13/906:00
USM
-
LHR
2 stops30h 30m
โอมานแอร์
Wed 16/920:50
LHR
-
USM
2 stops18h 00m
โอมานแอร์
Deal found 26/6฿31,471
Tue 18/806:00
USM
-
LHR
2 stops19h 10m
โอมานแอร์
Fri 18/908:25
LHR
-
USM
2 stops23h 20m
โอมานแอร์
Deal found 29/6฿31,571
Tue 15/915:20
USM
-
LHR
2 stops33h 50m
โอมานแอร์
Tue 6/1020:50
LHR
-
USM
2 stops17h 40m
โอมานแอร์
Deal found 28/6฿31,604
Wed 5/806:00
USM
-
LHR
2 stops19h 10m
โอมานแอร์
Wed 2/920:50
LHR
-
USM
2 stops17h 40m
โอมานแอร์
Deal found 29/6฿33,665
Wed 19/806:00
USM
-
LHR
2 stops19h 10m
โอมานแอร์
Wed 16/920:50
LHR
-
USM
2 stops17h 40m
โอมานแอร์
Deal found 29/6฿33,798
Wed 28/1017:40
USM
-
LHR
2 stops19h 15m
Multiple Airlines
Wed 25/1120:05
LHR
-
USM
2 stops17h 20m
Multiple Airlines
Deal found 29/6฿34,230
Wed 5/806:00
USM
-
LHR
2 stops19h 10m
Multiple Airlines
Thu 3/919:30
LHR
-
USM
2 stops16h 15m
Multiple Airlines
Deal found 29/6฿35,027
Tue 4/819:50
USM
-
LHR
2 stops29h 20m
Multiple Airlines
Thu 3/919:30
LHR
-
USM
2 stops16h 15m
Multiple Airlines
Deal found 29/6฿35,326
Wed 5/806:00
USM
-
LHR
2 stops19h 10m
Multiple Airlines
Tue 1/910:00
LHR
-
USM
2 stops20h 45m
Multiple Airlines
Deal found 29/6฿36,489
Tue 4/820:50
USM
-
LHR
2 stops28h 20m
Multiple Airlines
Tue 1/910:00
LHR
-
USM
2 stops20h 45m
Multiple Airlines
Deal found 29/6฿36,955
Thu 29/1015:35
USM
-
LHR
2 stops21h 20m
Multiple Airlines
Thu 26/1107:40
LHR
-
USM
2 stops27h 00m
Multiple Airlines
Deal found 29/6฿37,088
Tue 15/915:50
USM
-
LHR
2 stops21h 05m
กัลฟ์แอร์
Tue 6/1022:05
LHR
-
USM
2 stops33h 40m
กัลฟ์แอร์
Deal found 1/7฿37,121

Find flight deals from Ko Samui to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Ko Samui (USM) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 1 July 2026.

Round-trip from

฿31,471

One-way from

฿14,091
โอมานแอร์
  • โอมานแอร์
  • 13/9-16/9
  • 4 total stops
  • 48h 30m total
  • Ko Samui to London
Search Deals
โอมานแอร์
  • โอมานแอร์
  • 11/9
  • 2 total stops
  • 37h 25m total
  • Ko Samui to London
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ko Samui to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 17,341 searches. Data last updated 1 July 2026.
Use the filters below to find and compare flights from Ko Samui to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 15/9

11:45-19:10

2 stops37h 25m

London Heathrow

Tue 6/10

20:50-12:45

2 stops33h 55m

฿31,471
Fastest return journey

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 3/9

06:00-19:10

2 stops19h 10m

London Heathrow

Wed 23/9

20:50-20:50

2 stops18h 00m

฿33,798

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 15/9

13:50-15:20

2 stops31h 30m

London Heathrow

Tue 6/10

10:00-17:05

2 stops25h 05m

฿38,317

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sun 13/9

16:25-07:05

2 stops20h 40m

London Heathrow

Wed 16/9

09:05-21:10

2 stops30h 05m

฿40,677

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sun 19/7

06:00-19:10

2 stops19h 10m

London Heathrow

Tue 11/8

20:50-21:35

2 stops18h 45m

฿40,976

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 27/10

13:25-06:15

2 stops23h 50m

London Heathrow

Sun 22/11

08:40-10:40

2 stops19h 00m

฿42,970

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sun 25/10

21:10-19:05

1 stop28h 55m

London Heathrow

Tue 24/11

21:20-19:50

1 stop15h 30m

฿44,299

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sun 13/9

13:30-06:35

1 stop23h 05m

London Heathrow

Wed 16/9

19:25-21:10

1 stop19h 45m

฿46,858
Cheapest one-way

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 11/9

11:45-19:10

2 stops37h 25m

฿14,091

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 6/7

19:45-18:45

3 stops29h 00m

฿18,211

Flights are sorted by cheapest return flights first.

Deals found on 28/6

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Best time to book a flight from Ko Samui to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Ko Samui with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 1 July 2026.
Get a feel of what it's like to fly with EVA Air from Ko Samui to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.5
Very Good
1,482 reviews
Check prices

Food

8.1

Entertainment

8.0

Crew

8.7

Comfort

8.3

Overall

8.5

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
EVA Air
8.5
Very Good
1,482 reviews
EVA Air
8.5
Very Good
1,482 reviews
Check prices

Food

8.1

Entertainment

8.0

Crew

8.7

Comfort

8.3

Overall

8.5

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!

Related info for your journey

Find useful and relevant information for your journey from Ko Samui to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ko Samui to London Heathrow?

    Most people fly from Ko Samui (USM) if they book a flight from Ko Samui to London Heathrow. On average, Ko Samui has 0 outbound flights to London Heathrow per day from 1 airline. Ko Samui is conveniently located just 3.3 km from Ko Samui’s city centre.

  • How long is the flight from Ko Samui to London Heathrow Airport?

    A quick flight from Ko Samui to London Heathrow Airport can take about 31h 30m. โอมานแอร์ provides one of the quickest options available for as low as ฿38,317. Airlines will cover a distance of 9888 km. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from Ko Samui to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from Ko Samui to London Heathrow Airport return from ฿37,229.

  • Can I find deals for flights from Ko Samui to Heathrow that include hotel bookings?

    Yes. In addition to deals on Ko Samui to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Ko Samui to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ko Samui to Heathrow.

  • Can I find deals for business class flights from Ko Samui to Heathrow?

    Yes. Cheapflights offers flight deals from Ko Samui to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Brentford

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Top airline flying from Ko Samui to Heathrow

Discover the top airline that operate flights from Ko Samui to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 17,341 searches. Data last updated 1 July 2026.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest฿37,229Average฿42,454FlexibilityNo cancel feeOn-time74%
Search EVA Air flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ko Samui to Heathrow?

Cheapflights makes it easy to find Ko Samui to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Ko Samui to Heathrow?

Millions of users choose and trust Cheapflights to book the best flight deals from Ko Samui to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ko Samui to Heathrow with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ko Samui to Heathrow flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Ko Samui to Heathrow become cheaper?

Yes, Cheapflights offers price alerts on Ko Samui to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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