What’s the top stopover airport for flights from Ko Samui to London Heathrow Airport?

Bangkok (BKK) – chosen by Cheapflights users on 86% of one-stop itineraries from Ko Samui to London Heathrow Airport on Cheapflights.

What’s the cheapest stopover airport for flights from Ko Samui to London Heathrow Airport?

Singapore (SIN) is the most affordable one-stop option, with an average return flight price of £836.

What’s the fastest stopover option from Ko Samui to London Heathrow Airport?

Flights via Bangkok (BKK) have the shortest average one-way travel time for one-stop routes: 16h 48m.

Which airport typically offers the quickest stopover for flights from Ko Samui to London Heathrow Airport?

Flights via Bangkok (BKK) offer the fastest connection on this route, with an average stopover time of 2h 43m.

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 32h 05m. Etihad Airways provides one of the quickest options available for as low as £746. The distance from Ko Samui to London Heathrow Airport is about 6144 mi.

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.

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).

What airport do you fly from for flights from Ko Samui to London Heathrow?

For a flight from Ko 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 Ko 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.

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.

£279+ Flights from Ko Samui to London Heathrow Airport

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 22 October 2025.

Fri 12/1207:00USM - LHR

2 stops43h 20mMultiple Airlines

Mon 12/121:30LHR - USM

2 stops30h 05mMultiple Airlines

Deal found 20/10£1,592

Best flights from Ko Samui to Heathrow
Discover carefully curated flight deals from Ko Samui to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 October 2025.

Thu 26/313:25USM - LHR

2 stops32h 05mEtihad Airways

Tue 7/414:45LHR - USM

2 stops40h 25mEtihad Airways

Deal found 21/10£746

Wed 25/320:30USM - LHR

2 stops18h 50mMultiple Airlines

Mon 6/413:45LHR - USM

2 stops18h 00mMultiple Airlines

Deal found 21/10£847

Wed 25/320:20USM - LHR

2 stops19h 00mAustrian Airlines

Wed 8/415:05LHR - USM

2 stops21h 25mAustrian Airlines

Deal found 21/10£885

Thu 26/313:25USM - LHR

2 stops32h 05mEtihad Airways

Mon 6/420:55LHR - USM

2 stops29h 20mEtihad Airways

Deal found 21/10£811

Fri 27/311:40USM - LHR

2 stops25h 45mMultiple Airlines

Tue 7/409:30LHR - USM

2 stops39h 50mMultiple Airlines

Deal found 21/10£852

Wed 25/313:25USM - LHR

2 stops24h 15mEtihad Airways

Tue 7/420:55LHR - USM

2 stops39h 20mEtihad Airways

Deal found 21/10£832

Thu 26/313:25USM - LHR

2 stops24h 10mMultiple Airlines

Wed 8/414:45LHR - USM

2 stops24h 50mMultiple Airlines

Deal found 21/10£867

Thu 26/311:40USM - LHR

1 stop36h 40mMultiple Airlines

Tue 7/422:15LHR - USM

2 stops27h 05mMultiple Airlines

Deal found 21/10£899

Fri 27/310:00USM - LHR

2 stops18h 40mMultiple Airlines

Mon 6/413:45LHR - USM

2 stops17h 00mMultiple Airlines

Deal found 21/10£921

Wed 25/311:40USM - LHR

1 stop34h 20mMultiple Airlines

Wed 8/414:45LHR - USM

2 stops24h 50mMultiple Airlines

Deal found 21/10£933

Thu 26/310:00USM - LHR

1 stop16h 35mMultiple Airlines

Mon 6/420:55LHR - USM

2 stops28h 25mMultiple Airlines

Deal found 21/10£1,010

One-way flights from Ko Samui to Heathrow
Search for one-way flight options from Ko Samui to Heathrow. Find affordable one-way fares based on user searches. Data last updated 22 October 2025.

Mon 3/1115:50USM - LHR

2 stops34h 30mMultiple Airlines

Deal found 21/10£279

Wed 5/1121:10USM - LHR

2 stops24h 20mMultiple Airlines

Deal found 21/10£292

Tue 10/307:00USM - LHR

2 stops53h 35mMultiple Airlines

Deal found 21/10£296

Wed 1/419:25USM - LHR

2 stops27h 10mMultiple Airlines

Deal found 20/10£300

Sun 21/1207:55USM - LHR

2 stops37h 35mMultiple Airlines

Deal found 21/10£300

Thu 2/407:00USM - LHR

2 stops39h 35mMultiple Airlines

Deal found 20/10£301

Sun 2/1115:50USM - LHR

2 stops34h 30mMultiple Airlines

Deal found 21/10£311

Thu 6/1119:35USM - LHR

2 stops50h 00mMultiple Airlines

Deal found 20/10£315

Fri 7/1119:45USM - LHR

3 stops43h 55mMultiple Airlines

Deal found 20/10£321

Cheap flight deals from Ko Samui to Heathrow

Round-trip from	£746
One-way from	£279
Popular in	January
Cheapest in	June
Average price	£1,098

Etihad Airways
26/3-7/4
4 total stops
72h 30m total
Ko Samui to London

Search Deals

3/11
2 total stops
34h 30m total
Ko Samui to London

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£105 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease (£48 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Cheapflights Fare Finder

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

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 26/3

13:25-14:30

2 stops32h 05m

London Heathrow

Tue 7/4

14:45-13:10

2 stops40h 25m

£746

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 26/3

13:25-14:30

2 stops32h 05m

London Heathrow

Mon 6/4

20:55-08:15

2 stops29h 20m

£811

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 25/3

13:25-06:40

2 stops24h 15m

London Heathrow

Tue 7/4

20:55-18:15

2 stops39h 20m

£832

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 25/3

20:30-08:20

2 stops18h 50m

London Heathrow

Mon 6/4

13:45-13:45

2 stops18h 00m

£847

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 27/3

11:40-06:25

2 stops25h 45m

London Heathrow

Tue 7/4

09:30-07:20

2 stops39h 50m

£852

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 26/3

13:25-06:35

2 stops24h 10m

London Heathrow

Wed 8/4

14:45-21:35

2 stops24h 50m

£867

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 25/3

20:20-08:20

2 stops19h 00m

London Heathrow

Wed 8/4

15:05-18:30

2 stops21h 25m

£885

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 26/3

11:40-17:20

1 stop36h 40m

London Heathrow

Tue 7/4

22:15-07:20

2 stops27h 05m

£899

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 27/3

10:00-21:40

2 stops18h 40m

London Heathrow

Mon 6/4

13:45-12:45

2 stops17h 00m

£921

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 25/3

11:40-15:00

1 stop34h 20m

London Heathrow

Wed 8/4

14:45-21:35

2 stops24h 50m

£933

Flights are sorted by cheapest return flights first.

Deals found on 21/10

Showing 1-10 of 19 results

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.

Cheapflights Insights

Everything you need to know about your flight from Ko Samui to London Heathrow Airport

Prices

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

It’s typically best to fly out from Ko Samui to London Heathrow Airport in the evening. Doing so could potentially save you 38% on the flight price compared to flying at midday, which is usually more expensive.

Related info for your journey

What airport do you fly from for flights from Ko Samui to London Heathrow?
For a flight from Ko 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 Ko 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.
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 32h 05m. Etihad Airways provides one of the quickest options available for as low as £746. The distance from Ko Samui to London Heathrow Airport is about 6144 mi.
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

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ko Samui to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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?

Need flexible booking options for your flight to Heathrow from Ko 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 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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Cheap flights from Ko Samui to London Heathrow Airport from £279

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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.

Find flight deals from Ko Samui to Heathrow

Cheapest flights from Ko Samui to HeathrowExplore 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 22 October 2025.

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 22 October 2025.

Cheap flight deals from Ko Samui to Heathrow

Round-trip from

One-way from

Popular in

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Average price

Cheapflights Fare Finder

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

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.

Cheapflights Insights

Everything you need to know about your flight from Ko Samui to London Heathrow Airport

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

What’s the top stopover airport for flights from Ko Samui to London Heathrow Airport?

What’s the fastest stopover option from Ko Samui to London Heathrow Airport?

What’s the fastest stopover option from Ko Samui to London Heathrow Airport?

Which airport typically offers the quickest stopover for flights from Ko Samui to London Heathrow Airport?

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?

How long is the flight from Ko Samui to London Heathrow Airport?

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

How can I find direct flights from Ko Samui to Heathrow?

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

Travelling to a place near London Heathrow Airport?

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Alternative routes for Ko Samui to Heathrow

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How does Cheapflights help users find flights from Ko Samui to Heathrow?

Why should you use Cheapflights to find cheap flight tickets from Ko Samui to Heathrow?

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

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

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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 22 October 2025.