What is the most punctual flight time for London to Ko Samui flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

How often are flights from London to Ko Samui delayed?

About 10% of weekly flights between London and Ko Samui have experienced delays in the past year, with the average delay time being 164 minutes.

Which airline has the best punctuality record on London to Ko Samui flights?

Over the last year, Virgin Atlantic have had the lowest number of delays on this route, with just 5% of flights being delayed.

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

For as low as $1,003, Etihad Airways can have you in Ko Samui from London Heathrow Airport in 27h 25m. The distance between London Heathrow Airport and Ko Samui is about 6144 mi.

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

Our cheapest airline available from London Heathrow Airport to Ko Samui is EVA Air. Our recent data shows that you can find tickets from as low as $1,046 on this airline. EVA Air is priced at 14% lower than the current average price of a flight leaving 3 months from now.

In terms of precipitation, rainfall in Ko Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Ko Samui when rainfall is around 2.3 in.

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

Most accurate provider : When it comes to deals on London Heathrow Airport-Ko Samui flights, users find the pricing of Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on London Heathrow Airport-Ko Samui flight deals on Cheapflights vs. Justfly.com >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Ko Samui flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on London Heathrow Airport-Ko Samui flights, Cheapflights users trust Justfly.com the most. Justfly.com has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Ko Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

For a flight from London Heathrow to Ko Samui, you will be flying into 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 inbound flights from London Heathrow per day. 1 airline has flights to Ko Samui from London Heathrow on a regular basis.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Heathrow to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$453+ Flights from London Heathrow Airport to Ko Samui

Q: How much does it cost to fly round-trip from London Heathrow Airport to Ko Samui?

Airfare is below average for this route at the moment. London Heathrow Airport to Ko Samui flights typically cost between $1,488 and $1,977 in February. The cheapest round-trip price found within the last 3 days was $995 on Etihad Airways (Feb 25-Mar 15).

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheapflights Tip: The best prices from London Heathrow to Ko Samui are usually found in May or June, booked 60 days in advance, depart on a Friday or Wednesday and return on a Wednesday

Cheap flight deals from Heathrow to Ko Samui

Cheapest flights from Heathrow to Ko Samui
Explore the most affordable flight options available from Heathrow to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Sun 12/2811:45 amLHR - USM

2 stops26h 20mKLM

Wed 1/2811:40 amUSM - LHR

2 stops28h 20mKLM

Deal found 12/17

$1,874

Sun 12/285:05 pmLHR - USM

2 stops21h 00mMultiple Airlines

Mon 1/1911:40 amUSM - LHR

2 stops27h 15mMultiple Airlines

Deal found 12/17

$1,875

Tue 12/305:50 pmLHR - USM

1 stop18h 45mCathay Pacific

Sun 1/1111:40 amUSM - LHR

2 stops33h 20mCathay Pacific

Deal found 12/16

$1,935

Tue 12/301:55 pmLHR - USM

2 stops23h 30mEtihad Airways

Sun 1/116:40 pmUSM - LHR

2 stops24h 25mEtihad Airways

Deal found 12/16

$2,015

Tue 12/301:55 pmLHR - USM

2 stops23h 30mEtihad Airways

Tue 1/67:10 pmUSM - LHR

2 stops30h 00mEtihad Airways

Deal found 12/16

$2,104

Tue 12/301:55 pmLHR - USM

2 stops23h 30mEtihad Airways

Fri 1/97:35 pmUSM - LHR

2 stops25h 55mEtihad Airways

Deal found 12/16

$2,117

Tue 12/305:50 pmLHR - USM

1 stop18h 45mCathay Pacific

Fri 1/911:40 amUSM - LHR

2 stops31h 15mCathay Pacific

Deal found 12/16

$2,128

Mon 12/2910:05 pmLHR - USM

1 stop38h 30mCathay Pacific

Sun 1/1111:40 amUSM - LHR

2 stops33h 20mCathay Pacific

Deal found 12/16

$2,136

Wed 12/318:40 amLHR - USM

2 stops17h 40mQatar Airways

Sun 1/115:25 pmUSM - LHR

2 stops20h 55mQatar Airways

Deal found 12/16

$2,163

Wed 12/1711:45 amLHR - USM

2 stops22h 55mMultiple Airlines

Sat 1/1711:40 amUSM - LHR

2 stops27h 20mMultiple Airlines

Deal found 12/16

$2,191

Wed 12/318:50 amLHR - USM

2 stops17h 30mEtihad Airways

Tue 1/67:10 pmUSM - LHR

2 stops30h 00mEtihad Airways

Deal found 12/16

$2,320

Mon 12/2910:05 pmLHR - USM

1 stop38h 30mCathay Pacific

Fri 1/911:40 amUSM - LHR

2 stops31h 15mCathay Pacific

Deal found 12/16

$2,329

Best flights from Heathrow to Ko Samui
Discover carefully curated flight deals from Heathrow to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Tue 4/219:45 pmLHR - USM

2 stops27h 25mEtihad Airways

Thu 5/148:50 pmUSM - LHR

2 stops24h 25mEtihad Airways

Deal found 12/17

$1,003

Thu 6/410:00 pmLHR - USM

1 stop17h 10mBritish Airways

Mon 6/81:30 pmUSM - LHR

1 stop23h 05mBritish Airways

Deal found 12/16

$1,056

Sat 6/68:55 pmLHR - USM

2 stops31h 35mEtihad Airways

Mon 6/226:55 pmUSM - LHR

2 stops26h 20mEtihad Airways

Deal found 12/15

$1,019

Thu 2/266:40 pmLHR - USM

1 stop16h 35mBritish Airways

Fri 3/134:25 pmUSM - LHR

1 stop20h 30mBritish Airways

Deal found 12/17

$1,119

Wed 6/109:30 amLHR - USM

2 stops30h 05mEtihad Airways

Sat 6/275:55 pmUSM - LHR

2 stops43h 05mEtihad Airways

Deal found 12/15

$1,027

Sun 6/148:55 pmLHR - USM

2 stops42h 40mEtihad Airways

Sat 6/275:55 pmUSM - LHR

2 stops43h 05mEtihad Airways

Deal found 12/15

$1,027

Thu 2/269:00 pmLHR - USM

1 stop38h 15mBritish Airways

Sun 3/81:25 pmUSM - LHR

2 stops23h 00mBritish Airways

Deal found 12/17

$1,130

Wed 4/222:45 pmLHR - USM

2 stops24h 50mEtihad Airways

Fri 5/88:50 pmUSM - LHR

2 stops40h 10mEtihad Airways

Deal found 12/17

$1,040

Tue 6/98:55 pmLHR - USM

2 stops42h 40mEtihad Airways

Sat 6/205:55 pmUSM - LHR

2 stops30h 50mEtihad Airways

Deal found 12/15

$1,046

Sat 6/62:45 pmLHR - USM

2 stops38h 55mEtihad Airways

Fri 6/265:55 pmUSM - LHR

2 stops43h 05mEtihad Airways

Deal found 12/15

$1,046

Mon 6/89:30 amLHR - USM

2 stops30h 05mEtihad Airways

Sat 6/205:55 pmUSM - LHR

2 stops30h 50mEtihad Airways

Deal found 12/15

$1,046

Fri 6/129:45 pmLHR - USM

2 stops41h 50mEtihad Airways

Sat 6/275:55 pmUSM - LHR

2 stops43h 05mEtihad Airways

Deal found 12/15

$1,054

Last-minute flights from Heathrow to Ko Samui
Discover last-minute flight deals from Heathrow to Ko Samui. Data last updated December 18, 2025 and is based on user searches.

Mon 1/58:40 amLHR - USM

2 stops18h 55mMultiple Airlines

Thu 1/2211:40 amUSM - LHR

2 stops27h 15mMultiple Airlines

Deal found 12/16

$1,253

Wed 1/78:50 amLHR - USM

2 stops27h 45mEtihad Airways

Wed 1/218:30 pmUSM - LHR

2 stops28h 40mEtihad Airways

Deal found 12/16

$1,264

Thu 1/87:10 amLHR - USM

2 stops29h 25mCathay Pacific

Wed 1/2111:40 amUSM - LHR

1 stop25h 50mCathay Pacific

Deal found 12/16

$1,240

Sun 1/119:00 pmLHR - USM

1 stop38h 15mBritish Airways

Sat 1/241:25 pmUSM - LHR

1 stop23h 30mBritish Airways

Deal found 12/16

$1,238

Wed 1/148:50 amLHR - USM

2 stops21h 15mEtihad Airways

Mon 2/28:50 amUSM - LHR

2 stops52h 50mEtihad Airways

Deal found 12/16

$1,136

Wed 1/144:50 pmLHR - USM

1 stop19h 45mCathay Pacific

Tue 1/2711:40 amUSM - LHR

1 stop34h 20mCathay Pacific

Deal found 12/17

$1,167

Wed 1/147:15 amLHR - USM

2 stops29h 20mMultiple Airlines

Tue 1/2711:40 amUSM - LHR

1 stop36h 40mMultiple Airlines

Deal found 12/17

$1,231

Thu 1/158:50 amLHR - USM

2 stops26h 25mEtihad Airways

Mon 2/28:50 amUSM - LHR

2 stops60h 40mEtihad Airways

Deal found 12/16

$1,095

Mon 1/196:40 pmLHR - USM

1 stop16h 35mBritish Airways

Mon 2/21:25 pmUSM - LHR

1 stop23h 30mBritish Airways

Deal found 12/16

$1,115

One-way flights from Heathrow to Ko Samui
Search for one-way flight options from Heathrow to Ko Samui. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Fri 3/139:05 pmLHR - USM

2 stops51h 05mMultiple Airlines

Deal found 12/16

$453

Mon 1/1910:25 amLHR - USM

2 stops19h 40mMultiple Airlines

Deal found 12/17

$727

Fri 3/1311:50 amLHR - USM

1 stop26h 30mThai Airways

Deal found 12/16

$784

Mon 1/1911:00 amLHR - USM

1 stop25h 35mCathay Pacific

Deal found 12/17

$895

Wed 4/19:35 pmLHR - USM

1 stop27h 35mEVA Air

Deal found 12/16

$1,117

Sat 1/37:20 pmLHR - USM

2 stops19h 00mEtihad Airways

Deal found 12/17

$1,156

Fri 1/27:45 amLHR - USM

2 stops28h 50mMultiple Airlines

Deal found 12/17

$1,312

Sat 1/33:30 pmLHR - USM

2 stops18h 30mQatar Airways

Deal found 12/17

$1,329

Find flight deals from Heathrow to Ko Samui

Most accurate provider	Justfly.com 3 stars
Most trusted provider	Justfly.com 3 stars
Round-trip from	$995 (Etihad Airways)
One-way from	$453 (Kiwi.com)
Popular in	December
Cheapest in	May
Average price	$1,675

Provider with most accurate pricing for London Heathrow-Ko Samui flight deals.

Search Deals

Provider most trusted by Cheapflights users for London Heathrow-Ko Samui flights.

Search Deals

From London Heathrow to Ko Samui

Search Deals

One-way flight from London Heathrow to Ko Samui

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($117 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($42 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Tue 4/21

9:45 pm-7:10 am

2 stops27h 25m

Ko Samui

Thu 5/14

8:50 pm-3:15 pm

2 stops24h 25m

$1,003

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sat 6/6

8:55 pm-10:30 am

2 stops31h 35m

Ko Samui

Mon 6/22

6:55 pm-3:15 pm

2 stops26h 20m

$1,019

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Wed 6/10

9:30 am-9:35 pm

2 stops30h 05m

Ko Samui

Sat 6/27

5:55 pm-7:00 am

2 stops43h 05m

$1,027

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sun 6/14

8:55 pm-9:35 pm

2 stops42h 40m

Ko Samui

Sat 6/27

5:55 pm-7:00 am

2 stops43h 05m

$1,027

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Wed 4/22

2:45 pm-9:35 pm

2 stops24h 50m

Ko Samui

Fri 5/8

8:50 pm-7:00 am

2 stops40h 10m

$1,040

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Tue 6/9

8:55 pm-9:35 pm

2 stops42h 40m

Ko Samui

Sat 6/20

5:55 pm-6:45 pm

2 stops30h 50m

$1,046

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sat 6/6

2:45 pm-11:40 am

2 stops38h 55m

Ko Samui

Fri 6/26

5:55 pm-7:00 am

2 stops43h 05m

$1,046

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 6/8

9:30 am-9:35 pm

2 stops30h 05m

Ko Samui

Sat 6/20

5:55 pm-6:45 pm

2 stops30h 50m

$1,046

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Fri 6/12

9:45 pm-9:35 pm

2 stops41h 50m

Ko Samui

Sat 6/27

5:55 pm-7:00 am

2 stops43h 05m

$1,054

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 6/4

10:00 pm-9:10 pm

1 stop17h 10m

Ko Samui

Mon 6/8

1:30 pm-6:35 am

1 stop23h 05m

$1,056

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 19 results

Compare providers for flights from Heathrow to Ko Samui

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Ko Samui in December.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
Justfly.com	Price Accuracy3 stars	Trust Score*3 stars
Gotogate	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on London Heathrow Airport-Ko Samui flights, users find the pricing of Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on London Heathrow Airport-Ko Samui flight deals on Cheapflights vs. Justfly.com >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Ko Samui flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on London Heathrow Airport-Ko Samui flights, Cheapflights users trust Justfly.com the most. Justfly.com has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Ko Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Heathrow to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Heathrow with our price prediction graph.

Estimated round-trip 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 London Heathrow Airport to Ko Samui

Prices

Delays

How far ahead should I book a flight from London Heathrow Airport to Ko Samui?

The price you pay for your flight from London Heathrow Airport to Ko Samui may vary depending on when you book. For the best chance of a lower fare, look to book 60 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, October is the cheapest month in which you can book a flight from London Heathrow Airport to Ko Samui (average of $674). Flying from London Heathrow Airport to Ko Samui in December is currently the most expensive (average of $1,111). 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 time of day to fly from LHR to USM?

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to Ko Samui in the afternoon. If you’re flexible enough to do this you can expect to save up to 42% on your trip compared to booking a flight in the morning.

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

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

How much does it cost to fly round-trip from London Heathrow Airport to Ko Samui?

The best insider tips for London Heathrow Airport to Ko Samui flights

Cheapflights partnered with top experts to bring you the best recommendations for your London Heathrow Airport to Ko Samui trip

Airlines

Virgin Atlantic

Virgin's Upper Class includes lie-flat beds and a four-course meal.

Virgin's Economy Delight offers extra legroom, priority boarding, and checked bag included.

British Airways

BA's Club Suite offers privacy with solo pods and a door you can close.

BA's World Traveller Plus offers extra seat width, legroom, and upgraded service.

Our travel experts

Blane Bachelor

Expert on Virgin Atlantic

Gabriel Leigh

Expert on British Airways

Reviews of airlines servicing Ko Samui

Read reviews from past customers who have flown EVA Air from London Heathrow Airport to Ko Samui. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.5

Very good

1,297 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

EVA Air

8.5

Very good

1,297 reviews

EVA Air

8.5

Very good

1,297 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

Related info for your journey

What airport do you fly into for flights to Ko Samui from London Heathrow?
For a flight from London Heathrow to Ko Samui, you will be flying into 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 inbound flights from London Heathrow per day. 1 airline has flights to Ko Samui from London Heathrow on a regular basis.
How long is the flight from London Heathrow Airport to Ko Samui?
For as low as $1,003, Etihad Airways can have you in Ko Samui from London Heathrow Airport in 27h 25m. The distance between London Heathrow Airport and Ko Samui is about 6144 mi.
What is the cheapest airline to fly from London Heathrow Airport to Ko Samui round-trip?
Our cheapest airline available from London Heathrow Airport to Ko Samui is EVA Air. Our recent data shows that you can find tickets from as low as $1,046 on this airline. EVA Air is priced at 14% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from Heathrow to Ko Samui that include hotel bookings?
Yes. In addition to deals on Heathrow to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Heathrow to Ko Samui?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Ko Samui.
Can I find deals for business class flights from Heathrow to Ko Samui?
Yes. Cheapflights offers flight deals from Heathrow to Ko Samui 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 London Heathrow Airport to Ko Samui?
Currently, October is the cheapest month in which you can book a flight from London Heathrow Airport to Ko Samui (average of $674). Flying from London Heathrow Airport to Ko Samui in December is currently the most expensive (average of $1,111). 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

Ko Tao

Ko Pha Ngan

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Ko Samui to Bangkok Suvarnabhumi Airport flights

Top airline flying from Heathrow to Ko Samui

Airline	Cheapest	Average	Flexibility	On-time
EVA Air	Cheapest$1,046	Average$1,054	FlexibilityNo cancel fee	On-time74%

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$453+ Cheap flights from Heathrow (LHR) to Ko Samui (USM)

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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Heathrow to Ko Samui with Cheapflights

1. Tell us where you want to go

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3. Compare prices and book

Cheapflights Tip: The best prices from London Heathrow to Ko Samui are usually found in May or June, booked 60 days in advance, depart on a Friday or Wednesday and return on a Wednesday

Cheap flight deals from Heathrow to Ko Samui

Cheapest flights from Heathrow to Ko SamuiExplore the most affordable flight options available from Heathrow to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Explore the most affordable flight options available from Heathrow to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Find flight deals from Heathrow to Ko Samui

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Compare providers for flights from Heathrow to Ko Samui

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Ko Samui in December.

Best time to book a flight from Heathrow to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Heathrow with our price prediction graph.

Cheapflights Insights

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

How far ahead should I book a flight from London Heathrow Airport to Ko Samui?

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

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

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

How much does it cost to fly round-trip from London Heathrow Airport to Ko Samui?

How often are flights from London to Ko Samui delayed?

What is the most punctual flight time for London to Ko Samui flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on London to Ko Samui flights?

The best insider tips for London Heathrow Airport to Ko Samui flights

AI-powered summary based on content written by travel experts. AI can make mistakes.

Cheapflights partnered with top experts to bring you the best recommendations for your London Heathrow Airport to Ko Samui trip

Airlines

Virgin Atlantic

British Airways

Our travel experts

Reviews of airlines servicing Ko Samui

Read reviews from past customers who have flown EVA Air from London Heathrow Airport to Ko Samui. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Ko Samui. 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 into for flights to Ko Samui from London Heathrow?

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

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

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

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

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

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Cheapest flights from Heathrow to Ko Samui
Explore the most affordable flight options available from Heathrow to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.