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Ko Samui

$687+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — USM
may. 4 — may. 111
dom. 5/4
dom. 5/11
1 adult, Economy
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Cheapflights Tip: 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 Wednesday

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 abril 29, 2025.

Most accurate provider

Flightnetwork
3 stars

Most trusted provider

Flightnetwork
3 stars

Round-trip from

$995
(Lufthansa)

One-way from

$687
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,337
Provider with most accurate pricing for London Heathrow-Ko Samui flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-Ko Samui flights.
Search Deals
From London Heathrow to Ko Samui
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One-way flight from London Heathrow to Ko Samui
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($93 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 abril 29, 2025.

This Lufthansa deal was found by Cheapflights users on 4/29. 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.
vie. 6/64:25 pmLHR - USM
2 stops18h 25mMultiple Airlines
dom. 6/228:45 amUSM - LHR
2 stops19h 00mMultiple Airlines
Deal found 4/29$995
This SWISS deal was found by Cheapflights users on 4/29. 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.
lun. 6/26:00 amLHR - USM
2 stops25h 45mSWISS
mié. 6/2510:05 amUSM - LHR
2 stops27h 50mSWISS
Deal found 4/29$1,000
This KLM deal was found by Cheapflights users on 4/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/152:45 pmLHR - USM
2 stops21h 30mKLM
jue. 6/58:45 amUSM - LHR
2 stops18h 10mKLM
Deal found 4/29$1,022
This Austrian Airlines deal was found by Cheapflights users on 4/29. 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.
lun. 6/26:00 amLHR - USM
2 stops30h 30mAustrian Airlines
jue. 6/267:15 pmUSM - LHR
2 stops19h 30mAustrian Airlines
Deal found 4/29$1,033
This Lufthansa deal was found by Cheapflights users on 4/29. 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.
jue. 6/55:50 pmLHR - USM
2 stops17h 55mLufthansa
lun. 6/301:30 pmUSM - LHR
2 stops24h 45mLufthansa
Deal found 4/29$1,087
This EVA Air deal was found by Cheapflights users on 4/29. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/139:35 pmLHR - USM
1 stop14h 55mEVA Air
vie. 6/69:30 amUSM - LHR
1 stop15h 50mEVA Air
Deal found 4/29$1,168
This Etihad Airways deal was found by Cheapflights users on 4/29. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 6/12:45 pmLHR - USM
2 stops24h 50mEtihad Airways
vie. 6/273:25 pmUSM - LHR
2 stops27h 20mEtihad Airways
Deal found 4/29$1,192
This Turkish Airlines deal was found by Cheapflights users on 4/29. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/186:30 amLHR - USM
2 stops28h 05mTurkish Airlines
sáb. 6/78:00 amUSM - LHR
2 stops20h 25mTurkish Airlines
Deal found 4/29$1,204
This Qatar Airways deal was found by Cheapflights users on 4/29. 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.
mar. 5/133:05 pmLHR - USM
2 stops19h 30mQatar Airways
vie. 6/65:55 pmUSM - LHR
2 stops20h 05mQatar Airways
Deal found 4/29$1,212
This FlightHub deal was found by Cheapflights users on 4/29. 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.
jue. 5/110:15 pmLHR - USM
1 stop38h 20mCathay Pacific
dom. 5/1110:55 amUSM - LHR
1 stop39h 40mCathay Pacific
Deal found 4/29$1,234
This British Airways deal was found by Cheapflights users on 4/29. 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.
sáb. 5/317:35 pmLHR - USM
1 stop16h 40mBritish Airways
lun. 6/304:25 pmUSM - LHR
1 stop20h 05mBritish Airways
Deal found 4/29$1,421
This Malaysia Airlines deal was found by Cheapflights users on 4/29. 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.
sáb. 7/511:00 amLHR - USM
2 stops24h 45mMalaysia Airlines
mar. 9/211:25 amUSM - LHR
2 stops24h 30mMalaysia Airlines
Deal found 4/29$1,754

Cheapflights Fare Finder

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 abril 29, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Ko Samui that are best for you.

Fly from

Heathrow

Fly to

Ko Samui

Route

Depart

Return

Price

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

vie. 6/6

4:25 pm-4:50 pm

2 stops18h 25m

Ko Samui

dom. 6/22

8:45 am-9:45 pm

2 stops19h 00m

$995

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

lun. 6/2

6:00 am-1:45 pm

2 stops25h 45m

Ko Samui

mié. 6/25

10:05 am-7:55 am

2 stops27h 50m

$1,000

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

jue. 5/15

2:45 pm-6:15 pm

2 stops21h 30m

Ko Samui

jue. 6/5

8:45 am-8:55 pm

2 stops18h 10m

$1,022

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

lun. 6/2

6:00 am-6:30 pm

2 stops30h 30m

Ko Samui

jue. 6/26

7:15 pm-8:45 am

2 stops19h 30m

$1,033

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

jue. 6/26

4:25 pm-5:45 pm

2 stops19h 20m

Ko Samui

jue. 7/10

4:25 pm-8:40 am

2 stops22h 15m

$1,072

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

lun. 5/12

9:35 pm-6:30 pm

1 stop14h 55m

Ko Samui

lun. 5/19

8:00 am-7:20 pm

1 stop17h 20m

$1,126

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

dom. 6/1

2:45 pm-9:35 pm

2 stops24h 50m

Ko Samui

vie. 6/27

3:25 pm-12:45 pm

2 stops27h 20m

$1,192

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

dom. 5/18

6:30 am-4:35 pm

2 stops28h 05m

Ko Samui

sáb. 6/7

8:00 am-10:25 pm

2 stops20h 25m

$1,204

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

mar. 5/13

3:05 pm-4:35 pm

2 stops19h 30m

Ko Samui

vie. 6/6

5:55 pm-8:00 am

2 stops20h 05m

$1,212

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

jue. 6/5

5:00 pm-6:35 pm

1 stop19h 35m

Ko Samui

sáb. 6/28

10:55 am-8:35 pm

1 stop39h 40m

$1,399

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

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

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.
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.

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

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

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 April 25, 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 abril 29, 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 43% 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 30, 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 abril 29, 2025.
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very good
1,186 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Emirates
8.0
Very good
3,215 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
KLM
7.8
Good
1,333 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Austrian Airlines
7.6
Good
780 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Cathay Pacific
7.5
Good
852 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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 $1,000 on this airline. Additional options worth looking into are KLM and Austrian Airlines, starting at $1,022 and $1,033 round-trip. SWISS is priced at 17% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from London Heathrow Airport to Ko Samui one-way?

    One-way options have recently been found by users for as low as $806 on EVA Air. Other airlines that offer cheap prices include SWISS from $893 and Emirates from $1,156 one-way.

  • 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 Tao
Ko Pha Ngan

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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 abril 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$1,049Average$1,135FlexibilityNo cancel feeOn-time74%

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