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

Bangkok (BKK) – chosen by Cheapflights users on 90% of one-stop itineraries from Ko Samui to London Heathrow Airport on Cheapflights.

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 49m.

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 £824.

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 29m.

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

Currently, January is the cheapest month in which you can book a flight from Ko Samui to London Heathrow Airport (average of £112). Flying from Ko Samui to London Heathrow Airport in August is currently the most expensive (average of £164). 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.

What is the cheapest day to fly from Ko Samui to London Heathrow Airport?

Travellers seeking maximum savings on their Ko Samui to London Heathrow Airport flight should consider departing on Monday mornings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 is the cheapest day to fly round-trip from Ko Samui to London Heathrow Airport?

Thursday is generally a great day to depart. Flying on this day could help you save up to 69%.

What is the cheapest month to fly from Ko Samui to London Heathrow Airport?

Due to multiple factors, expect to potentially pay more when booking in January. For low rates, October can be a great choice for travel to London Heathrow Airport. Flights to London Heathrow Airport from Ko Samui in October are about £942 on average during October, but can be found for as low as £400.

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.

£296+ Flights from Ko Samui to London Heathrow Airport

Cheap flight deals from Ko Samui to Heathrow

Round-trip from	£748
One-way from	£296
Popular in	January
Cheapest in	October
Average price	£1,135

29/10-5/11
4 total stops
39h 35m total
Ko Samui to London

Search Deals

3/2
2 total stops
33h 35m total
Ko Samui to London

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£128 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease (£45 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Ko Samui to Heathrow

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 16 September 2025.

Wed 29/1010:00USM - LHR

2 stops18h 40mMultiple Airlines

Wed 5/1117:10LHR - USM

2 stops20h 55mMultiple Airlines

Deal found 14/9£748

Thu 30/1010:00USM - LHR

2 stops29h 05mMultiple Airlines

Thu 6/1118:40LHR - USM

2 stops35h 25mMultiple Airlines

Deal found 15/9£756

Wed 29/1008:30USM - LHR

1 stop17h 35mEVA Air

Wed 5/1121:20LHR - USM

1 stop16h 05mEVA Air

Deal found 14/9£882

Fri 10/1013:30USM - LHR

2 stops22h 55mQatar Airways

Mon 20/1015:05LHR - USM

2 stops21h 10mQatar Airways

Deal found 14/9£948

Fri 10/1008:45USM - LHR

1 stop16h 35mEVA Air

Mon 20/1021:35LHR - USM

1 stop18h 00mEVA Air

Deal found 14/9£1,077

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 16 September 2025.

Wed 29/1010:00USM - LHR

2 stops18h 40mMultiple Airlines

Wed 5/1117:10LHR - USM

2 stops20h 55mMultiple Airlines

Deal found 14/9£748

Wed 29/1008:30USM - LHR

1 stop17h 35mEVA Air

Wed 5/1121:20LHR - USM

1 stop16h 05mEVA Air

Deal found 14/9£882

Fri 10/1013:30USM - LHR

2 stops22h 55mQatar Airways

Mon 20/1015:05LHR - USM

2 stops21h 10mQatar Airways

Deal found 14/9£948

Thu 30/1010:00USM - LHR

2 stops29h 05mMultiple Airlines

Thu 6/1118:40LHR - USM

2 stops35h 25mMultiple Airlines

Deal found 15/9£756

Fri 10/1008:45USM - LHR

1 stop16h 35mEVA Air

Mon 20/1021:35LHR - USM

1 stop18h 00mEVA Air

Deal found 14/9£1,077

Last-minute flights from Ko Samui to Heathrow
Discover last-minute flight deals from Ko Samui to Heathrow. Data last updated 16 September 2025 and is based on user searches.

Fri 10/1013:30USM - LHR

2 stops22h 55mQatar Airways

Mon 20/1015:05LHR - USM

2 stops21h 10mQatar Airways

Deal found 14/9£948

Fri 10/1008:45USM - LHR

1 stop16h 35mEVA Air

Mon 20/1021:35LHR - USM

1 stop18h 00mEVA Air

Deal found 14/9£1,077

Wed 29/1010:00USM - LHR

2 stops18h 40mMultiple Airlines

Wed 5/1117:10LHR - USM

2 stops20h 55mMultiple Airlines

Deal found 14/9£748

Wed 29/1008:30USM - LHR

1 stop17h 35mEVA Air

Wed 5/1121:20LHR - USM

1 stop16h 05mEVA Air

Deal found 14/9£882

Thu 30/1010:00USM - LHR

2 stops29h 05mMultiple Airlines

Thu 6/1118:40LHR - USM

2 stops35h 25mMultiple Airlines

Deal found 15/9£756

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 16 September 2025.

Tue 3/215:50USM - LHR

2 stops33h 35mMultiple Airlines

Deal found 15/9£296

Mon 24/1106:45USM - LHR

2 stops42h 50mMultiple Airlines

Deal found 15/9£319

Tue 3/208:15USM - LHR

2 stops40h 55mEtihad Airways

Deal found 14/9£368

Tue 13/111:40USM - LHR

2 stops31h 30mQatar Airways

Deal found 15/9£403

Mon 24/1121:10USM - LHR

1 stop28h 55mEVA Air

Deal found 14/9£450

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

Wed 29/10

10:00-21:40

2 stops18h 40m

London Heathrow

Wed 5/11

17:10-21:05

2 stops20h 55m

£748

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 30/10

10:00-08:05

2 stops29h 05m

London Heathrow

Thu 6/11

18:40-13:05

2 stops35h 25m

£756

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 29/10

08:30-19:05

1 stop17h 35m

London Heathrow

Wed 5/11

21:20-20:25

1 stop16h 05m

£882

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 10/10

13:30-06:25

2 stops22h 55m

London Heathrow

Mon 20/10

15:05-18:15

2 stops21h 10m

£948

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 10/10

08:45-19:20

1 stop16h 35m

London Heathrow

Mon 20/10

21:35-21:35

1 stop18h 00m

£1,077

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 3/2

15:50-18:25

2 stops33h 35m

£296

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 24/11

06:45-18:35

2 stops42h 50m

£319

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 3/2

08:15-18:10

2 stops40h 55m

£368

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 13/1

11:40-12:10

2 stops31h 30m

£403

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 24/11

21:10-19:05

1 stop28h 55m

£450

Flights are sorted by cheapest return flights first.

Deals found on 15/9

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 afternoon. Doing so could potentially save you 17% 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.
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.
What is the cheapest month to book a flight from Ko Samui to London Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from Ko Samui to London Heathrow Airport (average of £112). Flying from Ko Samui to London Heathrow Airport in August is currently the most expensive (average of £164). 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.

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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 £296

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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ko Samui to Heathrow

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 16 September 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 16 September 2025.

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?

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?

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

Travelling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ko Samui to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

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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 16 September 2025.