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Cheap flights from Ko Samui to London Heathrow Airport from ฿13,458

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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
USM — LHR
14 Sep — 21 Sep1
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 15 August 2026.

Sun 27/917:25 -
2 stops19h 30m
Sun 4/1014:45 -
2 stops18h 00m
Deal found 13/8฿34,872
Tue 8/917:25 -
2 stops19h 30m
Wed 16/921:20 -
2 stops29h 05m
Deal found 11/8฿35,303
Mon 28/915:30 -
2 stops21h 25m
Mon 5/1010:00 -
2 stops26h 50m
Deal found 14/8฿35,700
Tue 10/1114:30 -
2 stops23h 05m
Mon 16/1117:10 -
2 stops20h 55m
Deal found 15/8฿35,767
Wed 9/917:25 -
2 stops19h 30m
Thu 17/910:00 -
2 stops20h 45m
Deal found 13/8฿36,463
Tue 15/915:25 -
2 stops21h 30m
Tue 6/1010:00 -
2 stops24h 30m
Deal found 14/8฿36,761

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 15 August 2026.

Round-trip from

฿34,872

One-way from

฿13,458
เอทิฮัดแอร์เวย์
  • เอทิฮัดแอร์เวย์
  • 27/9-4/10
  • 4 total stops
  • 37h 30m total
  • Ko Samui to London
Search Deals
2/11
  • 2/11
  • 2 total stops
  • 50h 50m 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 15 August 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
Fastest return journey

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sun 27/9

17:25-06:55

2 stops19h 30m

London Heathrow

Sun 4/10

14:45-14:45

2 stops18h 00m

฿34,872

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 10/11

14:30-06:35

2 stops23h 05m

London Heathrow

Mon 16/11

17:10-21:05

2 stops20h 55m

฿35,767

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 15/9

15:25-06:55

2 stops21h 30m

London Heathrow

Tue 6/10

10:00-16:30

2 stops24h 30m

฿36,761

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Thu 17/9

15:50-06:55

2 stops21h 05m

London Heathrow

Sun 20/9

22:05-15:45

2 stops35h 40m

฿36,894

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Fri 4/9

15:25-11:30

2 stops26h 05m

London Heathrow

Fri 18/9

13:15-20:50

2 stops25h 35m

฿38,551

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sun 13/9

16:25-12:25

2 stops26h 00m

London Heathrow

Sat 19/9

14:25-21:10

2 stops24h 45m

฿41,402

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sun 27/9

06:00-19:20

1 stop19h 20m

London Heathrow

Sun 4/10

21:35-07:10

1 stop27h 35m

฿42,264
Cheapest one-way

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Thu 27/8

18:15-20:25

2 stops32h 10m

฿19,988

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Fri 22/1

13:25-06:25

2 stops24h 00m

฿20,618

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 2/11

07:00-19:35

1 stop19h 35m

฿20,717

Flights are sorted by cheapest return flights first.

Deals found on 11/8

Showing 1-10 of 14 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.

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 0 airlines. 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 21h 30m. กัลฟ์แอร์ provides one of the quickest options available for as low as ฿36,761. Airlines will cover a distance of 9888 km.

  • 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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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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