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Cheap flights from Ko Samui to London Heathrow Airport from ฿10,873

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 17/5. Fares are subject to change and may not be available on all flights or dates of travel.
USM — LHR
16 Mar — 23 Mar1
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 14 February 2026.

Mon 30/306:00
USM
-
LHR
2 stops43h 10m
Multiple Airlines
Mon 6/408:25
LHR
-
USM
2 stops30h 05m
Multiple Airlines
Deal found 13/2฿35,477
Sun 29/321:00
USM
-
LHR
2 stops28h 00m
Multiple Airlines
Sun 5/422:10
LHR
-
USM
2 stops27h 20m
Multiple Airlines
Deal found 12/2฿35,880
Tue 31/315:50
USM
-
LHR
2 stops33h 40m
Multiple Airlines
Tue 7/409:45
LHR
-
USM
2 stops18h 45m
Multiple Airlines
Deal found 13/2฿36,595
Tue 7/409:15
USM
-
LHR
3 stops27h 10m
Multiple Airlines
Thu 16/406:30
LHR
-
USM
2 stops32h 40m
Multiple Airlines
Deal found 12/2฿37,806
Sat 28/317:40
USM
-
LHR
2 stops31h 30m
โอมานแอร์
Sat 4/420:50
LHR
-
USM
2 stops32h 45m
โอมานแอร์
Deal found 11/2฿40,416
Fri 27/317:05
USM
-
LHR
2 stops19h 50m
โอมานแอร์
Fri 3/420:50
LHR
-
USM
2 stops32h 15m
โอมานแอร์
Deal found 10/2฿40,602
Mon 9/308:30
USM
-
LHR
1 stop17h 35m
EVA Air
Wed 11/321:20
LHR
-
USM
1 stop15h 30m
EVA Air
Deal found 10/2฿40,851
Sun 22/315:35
USM
-
LHR
2 stops33h 50m
โอมานแอร์
Fri 3/408:25
LHR
-
USM
2 stops26h 40m
โอมานแอร์
Deal found 12/2฿41,006
Wed 8/415:25
USM
-
LHR
2 stops33h 45m
โอมานแอร์
Wed 15/420:50
LHR
-
USM
2 stops38h 55m
โอมานแอร์
Deal found 12/2฿41,907

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 14 February 2026.

Round-trip from

฿35,477

One-way from

฿10,873
30/3-6/4
  • 30/3-6/4
  • 4 total stops
  • 73h 15m total
  • Ko Samui to London
Search Deals
17/5
  • 17/5
  • 3 total stops
  • 41h 40m 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 14 February 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 30/3

06:00-19:10

2 stops43h 10m

London Heathrow

Mon 6/4

08:25-20:30

2 stops30h 05m

฿35,477

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sun 29/3

21:00-19:00

2 stops28h 00m

London Heathrow

Sun 5/4

22:10-07:30

2 stops27h 20m

฿35,880

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 31/3

15:50-19:30

2 stops33h 40m

London Heathrow

Tue 7/4

09:45-10:30

2 stops18h 45m

฿36,595

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sat 28/3

17:40-18:10

2 stops31h 30m

London Heathrow

Sat 4/4

20:50-11:35

2 stops32h 45m

฿40,416

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 27/3

17:05-05:55

2 stops19h 50m

London Heathrow

Fri 3/4

20:50-11:05

2 stops32h 15m

฿40,602

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 9/3

08:30-19:05

1 stop17h 35m

London Heathrow

Wed 11/3

21:20-19:50

1 stop15h 30m

฿40,851

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sun 22/3

15:35-18:25

2 stops33h 50m

London Heathrow

Fri 3/4

08:25-17:05

2 stops26h 40m

฿41,006

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 8/4

15:25-19:10

2 stops33h 45m

London Heathrow

Wed 15/4

20:50-17:45

2 stops38h 55m

฿41,907

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sun 17/5

07:50-19:30

3 stops41h 40m

฿10,873

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 19/5

07:50-19:30

2 stops41h 40m

฿10,873

Flights are sorted by cheapest return flights first.

Deals found on 12/2

Showing 1-10 of 15 results
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 31h 30m. โอมานแอร์ provides one of the quickest options available for as low as ฿40,416. 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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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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