Find flights
When to book
Airlines
FAQs

Cheap flights from Koh Samui to London Heathrow Airport from ฿19,664

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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
USM — LHR
22 Jan — 29 Jan1
1 adult

Cheap flight deals from Koh Samui to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Koh 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 17 January 2025.

Round-trip from

฿34,765

One-way from

฿19,664
10/2-26/2
  • 10/2-26/2
  • 4 total stops
  • 55h 20m total
  • Koh Samui to London
Search Deals
1/6
  • 1/6
  • 2 total stops
  • 18h 35m total
  • Koh Samui to London
Search Deals

Find flight deals from Koh Samui to Heathrow

Cheapest flights from Koh Samui to Heathrow
Explore the most affordable flight options available from Koh Samui to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 January 2025.

Mon 10/208:55USM - LHR
2 stops28h 50mMultiple Airlines
Wed 26/209:00LHR - USM
2 stops26h 30mMultiple Airlines
Deal found 17/1฿34,765
Mon 3/313:25USM - LHR
1 stop23h 50mแควนตัสแอร์เวย์
Mon 10/320:10LHR - USM
1 stop39h 05mแควนตัสแอร์เวย์
Deal found 17/1฿49,418

Find flights from Koh Samui to Heathrow within your budget

Customise your flight search to find flights from Koh 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 17 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 10/2

08:55-06:45

2 stops28h 50m

London Heathrow

Wed 26/2

09:00-18:30

2 stops26h 30m

฿34,765

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 3/3

13:25-06:15

1 stop23h 50m

London Heathrow

Mon 10/3

20:10-18:15

1 stop39h 05m

฿49,418

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sun 1/6

17:50-06:25

2 stops18h 35m

฿19,664

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 22/5

21:30-07:15

1 stop15h 45m

฿19,905

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 23/5

09:15-19:25

1 stop16h 10m

฿20,666

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 3/3

16:30-18:25

2 stops32h 55m

฿21,288

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 6/3

11:40-06:25

2 stops25h 45m

฿21,357

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sun 20/4

13:30-06:35

1 stop23h 05m

฿38,670

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 3/3

09:20-08:15

3 stops29h 55m

฿65,695

Flights are sorted by cheapest return flights first.

Deals found on 16/1

Best time to book a flight from Koh Samui to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Koh 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.

Travel insights for flights from Koh Samui to Heathrow

Get recent, data-driven insights about flights from Koh Samui to Heathrow including ideal travel times, pricing trends, and more.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 17 January 2025.
EVA Air
8.4
Very Good
1,248 reviews
Check prices

Food

8.0

Overall

8.4

Boarding

8.4

Comfort

8.2

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

EVA Air
8.4
Very Good
1,248 reviews
EVA Air
8.4
Very Good
1,248 reviews
Check prices

Food

8.0

Overall

8.4

Boarding

8.4

Comfort

8.2

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Thai Airways
7.8
Good
337 reviews
EVA Air
8.4
Very Good
1,248 reviews
Check prices

Food

8.0

Overall

8.4

Boarding

8.4

Comfort

8.2

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Qatar Airways
7.5
Good
3,752 reviews
EVA Air
8.4
Very Good
1,248 reviews
Check prices

Food

8.0

Overall

8.4

Boarding

8.4

Comfort

8.2

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

แควนตัสแอร์เวย์
7.5
Good
821 reviews
EVA Air
8.4
Very Good
1,248 reviews
Check prices

Food

8.0

Overall

8.4

Boarding

8.4

Comfort

8.2

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Related info for your journey

Find useful and relevant information for your journey from Koh 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 Koh Samui to London Heathrow?

    Most people fly from Ko Samui (USM) if they book a flight from Koh 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 Koh Samui’s city centre.

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

    Currently priced at ฿49,418, แควนตัสแอร์เวย์ will fly you from Koh Samui to London Heathrow Airport and back. In addition to แควนตัสแอร์เวย์, many other airlines offer competitively priced options for your trip.

  • What are the cheapest airlines to fly from Koh Samui to London Heathrow Airport one-way?

    For one-way options, check prices for Thai Airways. According to our data, you can fly for as low as ฿19,905. Users have also found prices from ฿20,666 and ฿21,288 on EVA Air and โอมานแอร์, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Koh 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.

  • What is the cheapest month to book a flight from Koh Samui to London Heathrow Airport?

    Currently, December is the cheapest month in which you can book a flight from Koh Samui to London Heathrow Airport (average of ฿810). Flying from Koh Samui to London Heathrow Airport in July is currently the most expensive (average of ฿1,025). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Koh Samui?

Book flights to Koh Samui if you plan to visit one of these locations
Brentford
Waterlooville

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 Koh Samui to Heathrow?

Cheapflights makes it easy to find Koh 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 Koh Samui to Heathrow?

Millions of users choose and trust Cheapflights to book the best flight deals from Koh 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 Koh Samui to Heathrow with no change fees?

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

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

Yes, Cheapflights offers price alerts on Koh 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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.