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

New Delhi (DEL) is the most affordable one-stop option, with an average return flight price of £407.

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

Flights via Bangkok (BKK) offer the fastest connection on this route, with an average stopover time of 2h 29m.

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

Flights via Bangkok (BKK) have the shortest average one-way travel time for one-stop routes: 15h 16m.

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

Bangkok (BKK) – chosen by Cheapflights users on 80% of one-stop itineraries from London Heathrow Airport to Ko Samui on Cheapflights.

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

There are many flights that can get you from London Heathrow Airport to Ko Samui in 19h 25m. Fly via Austrian Airlines or SWISS to get the fastest option. London Heathrow Airport and Ko Samui are separated by a distance of 6144 mi. This flight may include one or multiple stops.

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

Currently priced at £111, Bangkok Airways will fly you from London Heathrow Airport to Ko Samui and back. In addition to Bangkok Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Austrian Airlines and SWISS - these airlines can fly you to your destination from £594 and £603, respectively. Bangkok Airways is currently priced 87% below the average price you’ll pay for this route.

In terms of precipitation, rainfall in Ko Samui ranges from 58.0 - 490.0 inches per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Ko Samui when rainfall is around 58.0 mm.

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 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

What are the most popular airlines that fly from London Heathrow Airport to Ko Samui?

The most popular airlines flying from London Heathrow Airport to Ko Samui are Air France, British Airways and EVA Air. Something to consider prior to booking your flight.

Where are the most common stopover locations when flying from London Heathrow Airport to Ko Samui?

The most popular stopover on flights from London Heathrow Airport to Ko Samui is Bangkok.

Where are the least popular stopover locations for London Heathrow Airport to Ko Samui flights?

London Heathrow Airport to Ko Samui flights that have stopovers will least frequently stop in Singapore.

What are some popular things to do or see while on a stopover in Bangkok?

Bangkok travellers tend to visit Siam Square, Pratunam, and Thailand Cultural Center more than anywhere else. Travelers on a layover in Bangkok can visit Siam Square, Pratunam, and Thailand Cultural Center, by traveling 15.1 mi, 14.8 mi, and 13.1 mi, respectively after landing at Bangkok Suvarnabhumi. Those looking to explore during their stopover in Bangkok can hire a car from Bangkok Suvarnabhumi for about £16 per day.

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

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

Travelers have found it’s best to book a flight 57 days in advance to save up to 3% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 57 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London Heathrow Airport to Ko Samui 1-2 weeks in advance for as low as £803, or £868 for flights within the next 24 hours.

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

Our data shows that September tends to be the cheapest month to fly to Ko Samui from London Heathrow Airport. Users have commonly found prices around £916 for the month, but tickets can be as low as £631. Due to multiple factors, prepare for potentially higher prices in December.

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

Most people fly into Ko Samui (USM) if they book a flight to Ko Samui from London Heathrow. On average, Ko Samui has 0 inbound flights from London Heathrow per day from 13 airlines. Ko Samui is conveniently located just 2.1 mi from Ko Samui’s city center.

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 holiday 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.

£367+ Cheap Flights from London Heathrow Airport to Ko Samui

Cheapflights Tip: The best prices from London Heathrow to Ko Samui are usually found in May or September, booked 32 days in advance, depart on a Wednesday or Monday and return on a Friday

Cheap flight deals from Heathrow to Ko Samui

Round-trip from	£697
One-way from	£367
Popular in	December
Cheapest in	May
Average price	£786

26/10-2/11
4 total stops
58h 00m total
London to Ko Samui

Search Deals

3/11
3 total stops
51h 05m total
London to Ko Samui

Search Deals

Highest demand for flights based on searches. 8% potential increase in price (£63 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£24 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find 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 12 September 2025.

Sun 26/1013:00LHR - USM

2 stops22h 55mMultiple Airlines

Sun 2/1107:00USM - LHR

2 stops35h 05mMultiple Airlines

Deal found 11/9£697

Mon 29/910:00LHR - USM

2 stops20h 45mMultiple Airlines

Mon 6/1013:30USM - LHR

2 stops23h 25mMultiple Airlines

Deal found 11/9£704

Mon 10/1118:40LHR - USM

2 stops19h 25mSWISS

Tue 25/1110:00USM - LHR

2 stops18h 40mSWISS

Deal found 11/9£704

Mon 3/1118:40LHR - USM

2 stops19h 25mSWISS

Wed 19/1110:00USM - LHR

2 stops18h 40mSWISS

Deal found 12/9£705

Sat 25/1021:05LHR - USM

3 stops32h 50mMultiple Airlines

Sun 2/1107:00USM - LHR

2 stops35h 05mMultiple Airlines

Deal found 11/9£707

Mon 3/1113:45LHR - USM

2 stops24h 20mMultiple Airlines

Mon 1/1216:25USM - LHR

2 stops22h 40mMultiple Airlines

Deal found 11/9£709

Sun 28/910:00LHR - USM

2 stops20h 45mMultiple Airlines

Fri 17/1013:30USM - LHR

2 stops23h 25mMultiple Airlines

Deal found 11/9£713

Tue 18/1106:00LHR - USM

2 stops32h 05mMultiple Airlines

Wed 3/1218:05USM - LHR

2 stops21h 00mMultiple Airlines

Deal found 11/9£718

Thu 2/1010:00LHR - USM

2 stops20h 45mMultiple Airlines

Wed 15/1013:30USM - LHR

2 stops31h 50mMultiple Airlines

Deal found 11/9£719

Tue 28/1017:10LHR - USM

2 stops20h 55mMultiple Airlines

Wed 26/1116:25USM - LHR

2 stops23h 20mMultiple Airlines

Deal found 11/9£721

Best flights from Heathrow to Ko Samui
Discover carefully curated flight deals from Heathrow to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 September 2025.

Thu 5/309:05LHR - USM

2 stops26h 50mAustrian Airlines

Sat 21/310:00USM - LHR

2 stops18h 40mAustrian Airlines

Deal found 10/9£698

Thu 5/319:25LHR - USM

2 stops16h 30mMultiple Airlines

Thu 19/316:25USM - LHR

2 stops22h 40mMultiple Airlines

Deal found 10/9£704

Sat 7/318:40LHR - USM

2 stops19h 25mSWISS

Thu 19/316:25USM - LHR

2 stops22h 40mSWISS

Deal found 10/9£712

Thu 6/1109:30LHR - USM

2 stops23h 10mGulf Air

Thu 20/1115:35USM - LHR

2 stops30h 10mGulf Air

Deal found 11/9£793

Wed 5/1113:50LHR - USM

2 stops20h 40mQatar Airways

Mon 24/1116:30USM - LHR

2 stops20h 45mQatar Airways

Deal found 11/9£819

Thu 9/1009:30LHR - USM

2 stops30h 05mEtihad Airways

Tue 4/1118:15USM - LHR

2 stops27h 15mEtihad Airways

Deal found 10/9£832

Fri 6/321:00LHR - USM

1 stop17h 05mBritish Airways

Tue 17/313:25USM - LHR

1 stop23h 30mBritish Airways

Deal found 11/9£861

Fri 6/319:25LHR - USM

2 stops16h 15mAustrian Airlines

Sat 21/309:20USM - LHR

2 stops19h 20mAustrian Airlines

Deal found 10/9£698

Tue 4/1118:40LHR - USM

2 stops19h 25mSWISS

Fri 21/1110:00USM - LHR

2 stops18h 40mSWISS

Deal found 11/9£786

Thu 6/1115:30LHR - USM

2 stops19h 00mQatar Airways

Mon 24/1117:05USM - LHR

2 stops20h 20mQatar Airways

Deal found 11/9£819

Mon 13/1021:45LHR - USM

2 stops27h 35mEtihad Airways

Mon 10/1119:00USM - LHR

2 stops26h 30mEtihad Airways

Deal found 10/9£847

Thu 13/1120:55LHR - USM

2 stops27h 15mEtihad Airways

Wed 26/1117:05USM - LHR

2 stops26h 00mEtihad Airways

Deal found 11/9£850

Last-minute flights from Heathrow to Ko Samui
Discover last-minute flight deals from Heathrow to Ko Samui. Data last updated 12 September 2025 and is based on user searches.

Thu 11/910:00LHR - USM

2 stops20h 45mMultiple Airlines

Tue 23/908:20USM - LHR

2 stops28h 35mMultiple Airlines

Deal found 10/9£728

Thu 18/914:45LHR - USM

2 stops21h 30mKLM

Mon 29/908:00USM - LHR

2 stops18h 55mKLM

Deal found 11/9£735

Sun 28/910:00LHR - USM

2 stops20h 45mMultiple Airlines

Fri 17/1013:30USM - LHR

2 stops23h 25mMultiple Airlines

Deal found 11/9£713

Mon 29/910:00LHR - USM

2 stops20h 45mMultiple Airlines

Mon 6/1013:30USM - LHR

2 stops23h 25mMultiple Airlines

Deal found 11/9£704

Thu 2/1010:00LHR - USM

2 stops20h 45mMultiple Airlines

Wed 15/1013:30USM - LHR

2 stops31h 50mMultiple Airlines

Deal found 11/9£719

Mon 6/1020:25LHR - USM

2 stops42h 45mMultiple Airlines

Mon 13/1008:45USM - LHR

2 stops29h 10mMultiple Airlines

Deal found 10/9£743

Tue 7/1022:10LHR - USM

3 stops31h 00mMultiple Airlines

Tue 14/1017:40USM - LHR

2 stops31h 00mMultiple Airlines

Deal found 10/9£732

Wed 8/1015:05LHR - USM

2 stops20h 00mMultiple Airlines

Wed 15/1008:00USM - LHR

2 stops28h 25mMultiple Airlines

Deal found 10/9£742

Sat 25/1021:05LHR - USM

3 stops32h 50mMultiple Airlines

Sun 2/1107:00USM - LHR

2 stops35h 05mMultiple Airlines

Deal found 11/9£707

Sun 26/1013:00LHR - USM

2 stops22h 55mMultiple Airlines

Sun 2/1107:00USM - LHR

2 stops35h 05mMultiple Airlines

Deal found 11/9£697

Tue 28/1017:10LHR - USM

2 stops20h 55mMultiple Airlines

Wed 26/1116:25USM - LHR

2 stops23h 20mMultiple Airlines

Deal found 11/9£721

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 12 September 2025.

Mon 3/1121:05LHR - USM

3 stops51h 05mMultiple Airlines

Deal found 11/9£367

Sun 26/1020:25LHR - USM

3 stops51h 45mMultiple Airlines

Deal found 11/9£402

Tue 30/1220:05LHR - USM

2 stops28h 05mMultiple Airlines

Deal found 10/9£427

Thu 15/114:50LHR - USM

2 stops18h 50mMultiple Airlines

Deal found 11/9£430

Thu 15/119:25LHR - USM

2 stops16h 30mAustrian Airlines

Deal found 10/9£443

Wed 8/1010:00LHR - USM

2 stops22h 45mMultiple Airlines

Deal found 11/9£501

Wed 8/1020:55LHR - USM

2 stops39h 20mEtihad Airways

Deal found 9/9£511

Mon 29/1222:00LHR - USM

3 stops26h 10mMultiple Airlines

Deal found 10/9£526

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

Thu 5/3

09:05-18:55

2 stops26h 50m

Ko Samui

Sat 21/3

10:00-21:40

2 stops18h 40m

£698

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Fri 6/3

19:25-18:40

2 stops16h 15m

Ko Samui

Sat 21/3

09:20-21:40

2 stops19h 20m

£698

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 5/3

19:25-18:55

2 stops16h 30m

Ko Samui

Thu 19/3

16:25-08:05

2 stops22h 40m

£704

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sat 7/3

18:40-21:05

2 stops19h 25m

Ko Samui

Thu 19/3

16:25-08:05

2 stops22h 40m

£712

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Tue 4/11

18:40-21:05

2 stops19h 25m

Ko Samui

Fri 21/11

10:00-21:40

2 stops18h 40m

£786

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 6/11

09:30-15:40

2 stops23h 10m

Ko Samui

Thu 20/11

15:35-14:45

2 stops30h 10m

£793

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Wed 5/11

13:50-17:30

2 stops20h 40m

Ko Samui

Mon 24/11

16:30-06:15

2 stops20h 45m

£819

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 6/11

15:30-17:30

2 stops19h 00m

Ko Samui

Mon 24/11

17:05-06:25

2 stops20h 20m

£819

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 9/10

09:30-21:35

2 stops30h 05m

Ko Samui

Tue 4/11

18:15-14:30

2 stops27h 15m

£832

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 13/10

21:45-07:20

2 stops27h 35m

Ko Samui

Mon 10/11

19:00-14:30

2 stops26h 30m

£847

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 21 results

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 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 London Heathrow Airport to Ko Samui

Prices

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

The best time to book flights from London Heathrow Airport to Ko Samui is 32 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Ko Samui (average of £1,019). Flying from London Heathrow Airport to Ko Samui in December is currently the most expensive (average of £1,669). 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 at midday. If you’re flexible enough to do this you can expect to save up to 38% 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?

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

Reviews of airlines servicing Ko Samui

Read through reviews of airlines operating flights from London Heathrow Airport to Ko Samui, such as EVA Air, Singapore Airlines, andThai Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.4

Very Good

1,236 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

EVA Air

8.4

Very Good

1,236 reviews

EVA Air

8.4

Very Good

1,236 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Singapore Airlines

8.1

Very Good

1,365 reviews

EVA Air

8.4

Very Good

1,236 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Thai Airways

7.8

Good

350 reviews

EVA Air

8.4

Very Good

1,236 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Qatar Airways

7.4

Good

3,624 reviews

EVA Air

8.4

Very Good

1,236 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

British Airways

6.7

Okay

7,361 reviews

EVA Air

8.4

Very Good

1,236 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Related info for your journey

What airport do you fly into for flights to Ko Samui from London Heathrow?
Most people fly into Ko Samui (USM) if they book a flight to Ko Samui from London Heathrow. On average, Ko Samui has 0 inbound flights from London Heathrow per day from 13 airlines. Ko Samui is conveniently located just 2.1 mi from Ko Samui’s city center.
How long is the flight from London Heathrow Airport to Ko Samui?
There are many flights that can get you from London Heathrow Airport to Ko Samui in 19h 25m. Fly via Austrian Airlines or SWISS to get the fastest option. London Heathrow Airport and Ko Samui are separated by a distance of 6144 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London Heathrow Airport to Ko Samui round-trip?
Currently priced at £111, Bangkok Airways will fly you from London Heathrow Airport to Ko Samui and back. In addition to Bangkok Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Austrian Airlines and SWISS - these airlines can fly you to your destination from £594 and £603, respectively. Bangkok Airways is currently priced 87% below the average price you’ll pay for this route.
Where are the most common stopover locations when flying from London Heathrow Airport to Ko Samui?
The most popular stopover on flights from London Heathrow Airport to Ko Samui is Bangkok.
What are some popular things to do or see while on a stopover in Bangkok?
Bangkok travellers tend to visit Siam Square, Pratunam, and Thailand Cultural Center more than anywhere else. Travelers on a layover in Bangkok can visit Siam Square, Pratunam, and Thailand Cultural Center, by traveling 15.1 mi, 14.8 mi, and 13.1 mi, respectively after landing at Bangkok Suvarnabhumi. Those looking to explore during their stopover in Bangkok can hire a car from Bangkok Suvarnabhumi for about £16 per day.
Where are the least popular stopover locations for London Heathrow Airport to Ko Samui flights?
London Heathrow Airport to Ko Samui flights that have stopovers will least frequently stop in Singapore.
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 holiday 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, August is the cheapest month in which you can book a flight from London Heathrow Airport to Ko Samui (average of £1,019). Flying from London Heathrow Airport to Ko Samui in December is currently the most expensive (average of £1,669). 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

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Alternative routes for Heathrow to Ko Samui

Heathrow to Suvarnabhumi flights

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Luton to Suvarnabhumi flights

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Stansted to Phuket City flights

London City to Phuket City flights

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London City to Ko Samui flights

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Southend to Suvarnabhumi flights

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Gatwick to Krabi flights

Stansted to Krabi flights

Gatwick to Chiang Mai flights

London City to Krabi flights

London City to Chiang Mai flights

Stansted to Chiang Mai flights

Heathrow to Surat Thani flights

Gatwick to Rayong flights

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Heathrow to Rayong flights

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Heathrow to Chiang Rai flights

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Luton to Ko Samui flights

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Heathrow to Trat flights

Southend to Krabi flights

London City to Don Mueang Intl flights

Stansted to Trat flights

Gatwick to Trat flights

Gatwick to Surat Thani flights

Other flights to Ko Samui

Ko Samui to Bangkok Suvarnabhumi Airport flights

Ko Samui to Phuket City flights

Ko Samui to Krabi flights

Ko Samui to Chiang Mai flights

Ko Samui to Bangkok Don Mueang Intl Airport flights

Ko Samui to Bangkok Suvarnabhumi Airport flights

Ko Samui to Rayong flights

Ko Samui to Singapore flights

Top 10 airlines flying from Heathrow to Ko Samui

Airline	Cheapest	Average	Flexibility	On-time
Bangkok Airways	Cheapest£111	Average£141	FlexibilityNo cancel fee	On-time74%	Search Bangkok Airways flights
Austrian Airlines	Cheapest£594	Average£688	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights
SWISS	Cheapest£603	Average£685	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
Emirates	Cheapest£617	Average£823	FlexibilityNo cancel fee	On-time75%	Search Emirates flights
KLM	Cheapest£628	Average£760	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Lufthansa	Cheapest£630	Average£697	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Air France	Cheapest£653	Average£796	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Etihad Airways	Cheapest£663	Average£735	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
EVA Air	Cheapest£725	Average£830	FlexibilityNo cancel fee	On-time74%	Search EVA Air flights
British Airways	Cheapest£734	Average£1,184	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Fly with Cheapflights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Ko Samui. 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 Heathrow to Ko Samui?

Cheapflights simply makes it quick and affordable to book flights from Heathrow to Ko Samui by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Ko Samui, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Ko Samui from Heathrow today and book when prices fit your budget.

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Cheap flights from London Heathrow Airport to Ko Samui from £367

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.

Cheapflights Tip: The best prices from London Heathrow to Ko Samui are usually found in May or September, booked 32 days in advance, depart on a Wednesday or Monday and return on a Friday

Cheap flight deals from Heathrow to Ko Samui

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Find 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 12 September 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 12 September 2025.

Cheapflights Fare Finder

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

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?

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

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

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

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

Reviews of airlines servicing Ko Samui

Read through reviews of airlines operating flights from London Heathrow Airport to Ko Samui, such as EVA Air, Singapore Airlines, andThai Airways. Reviews also offer insight into each airline's 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 are the cheapest airlines flying from London Heathrow Airport to Ko Samui round-trip?

Where are the most common stopover locations when flying from London Heathrow Airport to Ko Samui?

What are some popular things to do or see while on a stopover in Bangkok?

Where are the least popular stopover locations for London Heathrow Airport to Ko Samui flights?

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?

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

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

Travelling to a place near Ko Samui?

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Alternative routes for Heathrow to Ko Samui

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Top 10 airlines flying from Heathrow 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 12 September 2025.