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Cheap flights from Koh Samui to London Heathrow Airport from £462

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 21/3. Fares are subject to change and may not be available on all flights or dates of travel.
USM — LHR
29 Jan — 5 Feb1
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 24 January 2025.

Round-trip from

£784

One-way from

£462
17/3-25/3
  • 17/3-25/3
  • 4 total stops
  • 48h 20m total
  • Koh Samui to London
Search Deals
21/3
  • 21/3
  • 2 total stops
  • 31h 10m 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 24 January 2025.

Mon 17/311:40USM - LHR
2 stops27h 25mMultiple Airlines
Tue 25/317:10LHR - USM
2 stops20h 55mMultiple Airlines
Deal found 23/1£784
Mon 17/321:30USM - LHR
1 stop28h 50mEVA Air
Tue 25/321:20LHR - USM
1 stop15h 30mEVA Air
Deal found 23/1£967
Fri 7/313:25USM - LHR
1 stop23h 50mQantas Airways
Fri 14/320:10LHR - USM
1 stop39h 05mQantas Airways
Deal found 23/1£1,242

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 858,174 searches. Data last updated 24 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 17/3

11:40-08:05

2 stops27h 25m

London Heathrow

Tue 25/3

17:10-21:05

2 stops20h 55m

£784

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 17/3

21:30-19:20

1 stop28h 50m

London Heathrow

Tue 25/3

21:20-19:50

1 stop15h 30m

£967

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 7/3

13:25-06:15

1 stop23h 50m

London Heathrow

Fri 14/3

20:10-18:15

1 stop39h 05m

£1,242

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 21/3

17:20-17:30

2 stops31h 10m

£462

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 2/4

08:00-19:10

1 stop17h 10m

£466

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 21/3

08:30-19:20

1 stop17h 50m

£477

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 6/3

11:40-06:25

2 stops25h 45m

£480

Koh SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 18/4

13:30-06:35

1 stop23h 05m

£938

Flights are sorted by cheapest return flights first.

Deals found on 23/1

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.

What is the cheapest time of day to fly from USM to LHR?

Find hourly flight availability from Koh Samui to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 24 January 2025.

It’s typically best to fly out from Koh Samui to London Heathrow Airport in the afternoon. Doing so could potentially save you 11% on the flight price compared to flying at midday, which is usually more expensive.

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 24 January 2025.
EVA Air
8.4
Very Good
1,251 reviews
Check prices

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Entertainment

8.0

Overall

8.4

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

EVA Air
8.4
Very Good
1,251 reviews
EVA Air
8.4
Very Good
1,251 reviews
Check prices

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Entertainment

8.0

Overall

8.4

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

Thai Airways
7.8
Good
337 reviews
EVA Air
8.4
Very Good
1,251 reviews
Check prices

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Entertainment

8.0

Overall

8.4

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

Qatar Airways
7.5
Good
3,733 reviews
EVA Air
8.4
Very Good
1,251 reviews
Check prices

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Entertainment

8.0

Overall

8.4

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

Qantas Airways
7.5
Good
824 reviews
EVA Air
8.4
Very Good
1,251 reviews
Check prices

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Entertainment

8.0

Overall

8.4

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

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?

    For a flight from Koh Samui to London Heathrow, you will be flying from Ko Samui. Ko Samui (USM) is just 2.1 mi from the center of the city. Ko Samui is the only Koh Samui airport and it handles 0 outbound flights to London Heathrow per day. 0 airlines have flights to London Heathrow from Ko Samui on a regular basis.

  • What are the cheapest airlines flying from Koh Samui to London Heathrow Airport round-trip?

    Our cheapest airline available from Koh Samui to London Heathrow Airport is EVA Air. Our recent data shows that you can find tickets from as low as £967 on this airline. An additional option worth looking into is Qantas Airways, starting at £1,242.

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

    The cheapest airline one-way is Thai Airways, with whom users have recently found tickets for as low as £466. However, be on the lookout for offers from EVA Air and Qatar Airways, as they are both options that can get you from Koh Samui to London Heathrow Airport for a low price.

  • 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, January is the cheapest month in which you can book a flight from Koh Samui to London Heathrow Airport (average of £112). Flying from Koh Samui to London Heathrow Airport in August is currently the most expensive (average of £161). 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
Deal
Hounslow
Gatwick
Croydon
Milton Keynes
Slough
Luton
Ilford
Hayes
Eastbourne
Northampton
Swindon
Maidstone
Crawley
Winchester
Southend-on-Sea
Wembley
Ipswich
Watford
Southall

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

Need flexible booking options for your flight to Heathrow from Koh Samui? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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.

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