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Ko Samui

$712+ 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 6/27. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — USM
Mar 15 — Mar 221
Sat 3/15
Sat 3/22
1 adult, Economy
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The best prices from London Heathrow to Ko Samui are usually found in September or May, booked 5 days in advance, depart on a Friday or Wednesday and return on a Sunday

Cheap flight deals from Heathrow to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Ko Samui (USM). 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 March 10, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,001
(Mytrip)

One-way from

$712
(Emirates)

Popular in

December

Cheapest in

September

Average price

$1,144
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. 5% potential increase in price ($74 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 10, 2025.

This Mytrip deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/17:05 amLHR - USM
2 stops22h 00mMultiple Airlines
Tue 4/83:25 pmUSM - LHR
3 stops33h 15mMultiple Airlines
Deal found 3/9$1,001
This SWISS deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/206:40 pmLHR - USM
2 stops20h 30mSWISS
Tue 6/34:25 pmUSM - LHR
2 stops21h 30mSWISS
Deal found 3/10$1,022
This Finnair deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/27:30 amLHR - USM
2 stops21h 15mFinnair
Fri 9/128:50 pmUSM - LHR
2 stops31h 20mFinnair
Deal found 3/10$1,067
This Lufthansa deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/285:30 pmLHR - USM
2 stops21h 40mLufthansa
Mon 5/267:15 pmUSM - LHR
2 stops23h 35mLufthansa
Deal found 3/10$1,093
This Austrian Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/267:30 pmLHR - USM
2 stops17h 00mAustrian Airlines
Fri 10/177:30 pmUSM - LHR
2 stops18h 50mAustrian Airlines
Deal found 3/10$1,199
This Emirates deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/237:50 pmLHR - USM
2 stops31h 30mEmirates
Sat 9/65:50 pmUSM - LHR
2 stops28h 20mEmirates
Deal found 3/9$1,319
This Malaysia Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2311:00 amLHR - USM
2 stops22h 45mMalaysia Airlines
Sat 9/63:30 pmUSM - LHR
2 stops20h 25mMalaysia Airlines
Deal found 3/10$1,330
This British Airways deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/298:35 pmLHR - USM
1 stop17h 35mBritish Airways
Thu 4/101:30 pmUSM - LHR
1 stop22h 55mBritish Airways
Deal found 3/9$1,346
This FlightHub deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/209:20 pmLHR - USM
1 stop16h 35mEVA Air
Thu 4/38:00 amUSM - LHR
1 stop17h 20mEVA Air
Deal found 3/10$1,398
This Cathay Pacific deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/55:00 pmLHR - USM
1 stop19h 35mCathay Pacific
Thu 8/2110:55 amUSM - LHR
2 stops33h 15mCathay Pacific
Deal found 3/10$1,686
This Qatar Airways deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/610:50 amLHR - USM
2 stops18h 15mQatar Airways
Thu 8/215:50 pmUSM - LHR
2 stops19h 40mQatar Airways
Deal found 3/10$1,693
This Singapore Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:55 amLHR - USM
1 stop24h 35mSingapore Airlines
Mon 1/124:25 pmUSM - LHR
1 stop20h 30mSingapore Airlines
Deal found 3/9$1,768

Find flights from Heathrow to Ko Samui within your budget

Customize your flight search to find flights from Heathrow to Ko Samui 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 2,558,603 searches. Data last updated March 10, 2025.

Fly from

Heathrow

Fly to

Ko Samui

Route

Depart

Return

Price

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Tue 4/1

7:05 am-11:05 am

2 stops22h 00m

Ko Samui

Tue 4/8

3:25 pm-6:40 pm

3 stops33h 15m

$1,001

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Tue 5/20

6:40 pm-9:10 pm

2 stops20h 30m

Ko Samui

Tue 6/3

4:25 pm-7:55 am

2 stops21h 30m

$1,022

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Tue 9/2

7:30 am-10:45 am

2 stops21h 15m

Ko Samui

Fri 9/12

8:50 pm-10:10 pm

2 stops31h 20m

$1,067

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 4/28

5:30 pm-9:10 pm

2 stops21h 40m

Ko Samui

Mon 5/26

7:15 pm-12:50 pm

2 stops23h 35m

$1,093

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sat 8/23

7:50 pm-9:20 am

2 stops31h 30m

Ko Samui

Sat 9/6

5:50 pm-4:10 pm

2 stops28h 20m

$1,319

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sat 8/23

11:00 am-3:45 pm

2 stops22h 45m

Ko Samui

Sat 9/6

3:30 pm-5:55 am

2 stops20h 25m

$1,330

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sat 3/29

8:35 pm-9:10 pm

1 stop17h 35m

Ko Samui

Thu 4/10

1:30 pm-6:25 am

1 stop22h 55m

$1,346

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 3/20

9:20 pm-8:55 pm

1 stop16h 35m

Ko Samui

Thu 4/3

8:00 am-7:20 pm

1 stop17h 20m

$1,398

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sun 4/27

11:45 am-12:45 pm

2 stops19h 00m

Ko Samui

Sun 5/18

7:00 am-8:55 pm

2 stops19h 55m

$1,629

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Tue 8/5

5:00 pm-6:35 pm

1 stop19h 35m

Ko Samui

Thu 8/21

10:55 am-2:10 pm

2 stops33h 15m

$1,686

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 15 results
1
2

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 March.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy2 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Ko Samui flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

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

Find out what our experts recommend to make the most of 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.

Read more about Virgin Atlanticby Blane Bachelor
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.

Read more about British Airwaysby Gabriel Leigh
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on Virgin Atlantic

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.

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.

Travel insights for flights from Heathrow to Ko Samui

Get recent, data-driven insights about flights from Heathrow to Ko Samui including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Ko Samui. Price data was last updated on March 7, 2025.

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 5 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Find hourly flight availability from Heathrow to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 10, 2025.

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 44% 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?

Use this chart to determine the cheapest time to fly round-trip from Heathrow to Ko Samui. Price data was last updated on March 9, 2025.

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.

Rainfall in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average rainfall totals by month.

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.

Temperature in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Ko Samui

Get insights into the airlines that provide service to Ko Samui. 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 Ko Samui. Reviews last updated March 10, 2025.
EVA Air
8.4
Very good
1,179 reviews

Comfort

8.3

Overall

8.4

Crew

8.6

Food

8.1

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

EVA Air
8.4
Very good
1,179 reviews
EVA Air
8.4
Very good
1,179 reviews

Comfort

8.3

Overall

8.4

Crew

8.6

Food

8.1

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Singapore Airlines
8.1
Very good
1,283 reviews
EVA Air
8.4
Very good
1,179 reviews

Comfort

8.3

Overall

8.4

Crew

8.6

Food

8.1

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Emirates
8.0
Very good
3,219 reviews
EVA Air
8.4
Very good
1,179 reviews

Comfort

8.3

Overall

8.4

Crew

8.6

Food

8.1

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

KLM
7.8
Good
1,320 reviews
EVA Air
8.4
Very good
1,179 reviews

Comfort

8.3

Overall

8.4

Crew

8.6

Food

8.1

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Finnair
7.6
Good
1,270 reviews
EVA Air
8.4
Very good
1,179 reviews

Comfort

8.3

Overall

8.4

Crew

8.6

Food

8.1

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

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?

    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.

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

    Our cheapest airline available from London Heathrow Airport to Ko Samui is SWISS. Our recent data shows that you can find tickets from as low as $1,022 on this airline. Additional options worth looking into are Finnair and Lufthansa, starting at $1,067 and $1,093 round-trip. SWISS 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.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ko Pha Ngan
Ko Tao

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Alternative routes for Heathrow to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Suvarnabhumi flights
Gatwick to Suvarnabhumi flights
Heathrow to Phuket City flights

Top airline flying from Heathrow to Ko Samui

Discover the top airline that operate flights from Heathrow to Ko Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$1,049Average$1,135FlexibilityNo cancel feeOn-time74%
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