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Cheap flights from Ko Samui to London Heathrow Airport from ฿12,711

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 27/1. Fares are subject to change and may not be available on all flights or dates of travel.
USM — LHR
10 Feb — 17 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 11 January 2026.

Round-trip from

฿35,191

One-way from

฿12,711
เอทิฮัดแอร์เวย์
  • เอทิฮัดแอร์เวย์
  • 23/2-2/3
  • 4 total stops
  • 83h 50m total
  • Ko Samui to London
Search Deals
27/1
  • 27/1
  • 2 total stops
  • 28h 15m total
  • Ko Samui to London
Search Deals

Find 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 11 January 2026.

Mon 23/219:35USM - LHR
2 stops54h 25mMultiple Airlines
Mon 2/319:20LHR - USM
2 stops29h 25mMultiple Airlines
Deal found 9/1฿35,191
Mon 9/216:30USM - LHR
2 stops29h 30mMultiple Airlines
Mon 16/217:50LHR - USM
2 stops30h 55mMultiple Airlines
Deal found 10/1฿38,040
Mon 9/308:30USM - LHR
1 stop17h 35mEVA Air
Wed 11/321:20LHR - USM
1 stop17h 00mEVA Air
Deal found 9/1฿40,827
Mon 9/316:30USM - LHR
2 stops20h 55mQatar Airways
Wed 11/308:40LHR - USM
2 stops20h 15mQatar Airways
Deal found 8/1฿44,897

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 11 January 2026.
Use the filters below to find and compare flights from Ko Samui to London Heathrow Airport that are best for you.

Fly from

Ko Samui

Fly to

Heathrow

Route

Depart

Return

Price

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 23/2

19:35-19:00

2 stops54h 25m

London Heathrow

Mon 2/3

19:20-07:45

2 stops29h 25m

฿35,191

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 9/2

16:30-15:00

2 stops29h 30m

London Heathrow

Mon 16/2

17:50-07:45

2 stops30h 55m

฿38,040

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 9/3

08:30-19:05

1 stop17h 35m

London Heathrow

Wed 11/3

21:20-21:20

1 stop17h 00m

฿40,827

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 9/3

16:30-06:25

2 stops20h 55m

London Heathrow

Wed 11/3

08:40-11:55

2 stops20h 15m

฿44,897

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 10/3

09:20-16:20

3 stops38h 00m

฿13,432

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 3/2

08:15-16:20

3 stops39h 05m

฿13,588

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 6/3

18:15-17:10

2 stops29h 55m

฿14,277

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 21/1

18:05-15:25

2 stops28h 20m

฿14,621

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 20/2

08:15-20:25

3 stops43h 10m

฿17,564

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 27/1

21:20-19:05

1 stop28h 45m

฿19,506

Flights are sorted by cheapest return flights first.

Deals found on 9/1

Showing 1-10 of 11 results
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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 17h 35m. EVA Air provides one of the quickest options available for as low as ฿40,827. 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
Waterlooville

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

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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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