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Koh Samui

$1,038+ Cheap flights from Heathrow (LHR) to Koh Samui (USM)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — USM
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
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 Wednesday

Cheap flight deals from Heathrow to Koh Samui

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Koh 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 January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,038
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$1,199
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
Highest demand for flights based on searches. 7% potential increase in price ($99 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Heathrow to Koh Samui

Cheapest flights from Heathrow to Koh Samui
Explore the most affordable flight options available from Heathrow to Koh Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 30, 2025.

This Mytrip deal was found by Cheapflights users on 1/30. 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.
Sun 4/201:15 pmLHR - USM
2 stops25h 30mMultiple Airlines
Wed 4/307:15 pmUSM - LHR
2 stops18h 15mMultiple Airlines
Deal found 1/30$1,038
This Etihad Airways deal was found by Cheapflights users on 1/29. 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.
Sun 5/119:55 pmLHR - USM
2 stops17h 40mEtihad Airways
Mon 5/269:30 pmUSM - LHR
2 stops23h 45mEtihad Airways
Deal found 1/29$1,048
This Booking.com deal was found by Cheapflights users on 1/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/269:20 pmLHR - USM
1 stop16h 25mEVA Air
Wed 3/128:30 amUSM - LHR
1 stop17h 50mEVA Air
Deal found 1/29$1,049
This Gotogate deal was found by Cheapflights users on 1/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1210:55 amLHR - USM
1 stop24h 35mSingapore Airlines
Mon 3/248:55 amUSM - LHR
1 stop17h 15mSingapore Airlines
Deal found 1/29$1,113
This Gulf Air deal was found by Cheapflights users on 1/30. 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 Gulf Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/169:30 amLHR - USM
2 stops39h 00mGulf Air
Sun 3/237:55 amUSM - LHR
2 stops29h 40mGulf Air
Deal found 1/30$1,145
This Lufthansa deal was found by Cheapflights users on 1/30. 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 4/74:25 pmLHR - USM
2 stops18h 25mLufthansa
Sun 6/11:30 pmUSM - LHR
2 stops24h 45mLufthansa
Deal found 1/30$1,205
This KLM deal was found by Cheapflights users on 1/30. 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.
Mon 3/315:10 pmLHR - USM
2 stops19h 05mKLM
Wed 4/2310:55 amUSM - LHR
2 stops26h 45mKLM
Deal found 1/30$1,226
This Austrian Airlines deal was found by Cheapflights users on 1/30. 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.
Tue 4/89:05 amLHR - USM
2 stops27h 25mAustrian Airlines
Tue 4/157:15 pmUSM - LHR
2 stops19h 45mAustrian Airlines
Deal found 1/30$1,273
This British Airways deal was found by Cheapflights users on 1/30. 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.
Tue 4/87:35 pmLHR - USM
1 stop16h 40mBritish Airways
Tue 6/34:25 pmUSM - LHR
1 stop20h 05mBritish Airways
Deal found 1/30$1,325
This SWISS deal was found by Cheapflights users on 1/30. 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.
Thu 4/38:45 amLHR - USM
2 stops22h 00mSWISS
Tue 6/39:15 amUSM - LHR
2 stops28h 40mSWISS
Deal found 1/30$1,329
This Qatar Airways deal was found by Cheapflights users on 1/30. 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 4/94:00 pmLHR - USM
2 stops18h 35mQatar Airways
Fri 6/65:55 pmUSM - LHR
2 stops18h 30mQatar Airways
Deal found 1/30$1,356
This Cathay Pacific deal was found by Cheapflights users on 1/30. 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.
Wed 2/125:50 pmLHR - USM
1 stop18h 45mCathay Pacific
Thu 2/2011:40 amUSM - LHR
1 stop25h 40mCathay Pacific
Deal found 1/30$1,506

Find flights from Heathrow to Koh Samui within your budget

Customize your flight search to find flights from Heathrow to Koh 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 January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Sun 4/20

1:15 pm-8:45 pm

2 stops25h 30m

Ko Samui

Wed 4/30

7:15 pm-7:30 am

2 stops18h 15m

$1,038

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Sun 5/11

8:55 pm-9:35 pm

2 stops18h 40m

Ko Samui

Thu 5/22

6:55 pm-3:15 pm

2 stops26h 20m

$1,048

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Wed 2/26

9:20 pm-8:45 pm

1 stop16h 25m

Ko Samui

Wed 3/12

8:30 am-7:20 pm

1 stop17h 50m

$1,049

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Wed 3/12

10:55 am-6:30 pm

1 stop24h 35m

Ko Samui

Mon 3/24

8:55 am-7:10 pm

1 stop17h 15m

$1,113

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Sun 3/16

9:30 am-7:30 am

2 stops39h 00m

Ko Samui

Sun 3/23

7:55 am-6:35 am

2 stops29h 40m

$1,145

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Mon 4/7

4:25 pm-4:50 pm

2 stops18h 25m

Ko Samui

Sun 6/1

1:30 pm-8:15 am

2 stops24h 45m

$1,205

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Mon 3/31

5:10 pm-6:15 pm

2 stops19h 05m

Ko Samui

Wed 4/23

10:55 am-7:40 am

2 stops26h 45m

$1,226

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Tue 4/8

9:05 am-6:30 pm

2 stops27h 25m

Ko Samui

Tue 4/15

7:15 pm-9:00 am

2 stops19h 45m

$1,273

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Tue 4/8

7:35 pm-6:15 pm

1 stop16h 40m

Ko Samui

Tue 6/3

4:25 pm-6:30 am

1 stop20h 05m

$1,325

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Thu 4/3

8:45 am-12:45 pm

2 stops22h 00m

Ko Samui

Tue 6/3

9:15 am-7:55 am

2 stops28h 40m

$1,329

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Showing 1-10 of 13 results
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Compare providers for flights from Heathrow to Koh 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 Koh Samui in January.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy2 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-Koh 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-Koh Samui flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Koh Samui flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Koh 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-Koh 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 Koh Samui

Have a flexible travel schedule? Discover the best time to fly to Koh 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 Koh Samui

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

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

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Koh Samui. Price data was last updated on January 24, 2025.

The best time to book flights from London Heathrow Airport to Koh Samui is 5 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 time of day to fly from LHR to USM?

Find hourly flight availability from Heathrow to Koh Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 30, 2025.

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to Koh Samui in the afternoon. If you’re flexible enough to do this you can expect to save up to 47% on your trip compared to booking a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Heathrow to Koh Samui. Price data was last updated on January 26, 2025.

Travelers seeking maximum savings on their London Heathrow Airport to Koh Samui flight should consider departing on Wednesday at noon 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 Koh Samui by month

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

In terms of precipitation, rainfall in Koh 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 Koh Samui when rainfall is around 2.3 in.

Temperature in Koh Samui by month

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

If weather is an important factor for your trip to Koh 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 Koh Samui

Get insights into the airlines that provide service to Koh 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 Koh Samui. Reviews last updated January 30, 2025.
EVA Air
8.4
Very good
1,238 reviews

Food

8.1

Crew

8.6

Entertainment

8.0

Comfort

8.3

Boarding

8.4

Overall

8.4

Reviews

1 / 20

10.0
Excellent

Paul,Jan 2025

DPS - TPE

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

EVA Air
8.4
Very good
1,238 reviews
EVA Air
8.4
Very good
1,238 reviews

Food

8.1

Crew

8.6

Entertainment

8.0

Comfort

8.3

Boarding

8.4

Overall

8.4

Reviews

1 / 20

10.0
Excellent

Paul,Jan 2025

DPS - TPE

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

Emirates
8.1
Very good
3,331 reviews
EVA Air
8.4
Very good
1,238 reviews

Food

8.1

Crew

8.6

Entertainment

8.0

Comfort

8.3

Boarding

8.4

Overall

8.4

Reviews

1 / 20

10.0
Excellent

Paul,Jan 2025

DPS - TPE

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

Singapore Airlines
8.1
Very good
1,318 reviews
EVA Air
8.4
Very good
1,238 reviews

Food

8.1

Crew

8.6

Entertainment

8.0

Comfort

8.3

Boarding

8.4

Overall

8.4

Reviews

1 / 20

10.0
Excellent

Paul,Jan 2025

DPS - TPE

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

KLM
7.8
Good
1,335 reviews
EVA Air
8.4
Very good
1,238 reviews

Food

8.1

Crew

8.6

Entertainment

8.0

Comfort

8.3

Boarding

8.4

Overall

8.4

Reviews

1 / 20

10.0
Excellent

Paul,Jan 2025

DPS - TPE

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

Qatar Airways
7.5
Good
3,715 reviews
EVA Air
8.4
Very good
1,238 reviews

Food

8.1

Crew

8.6

Entertainment

8.0

Comfort

8.3

Boarding

8.4

Overall

8.4

Reviews

1 / 20

10.0
Excellent

Paul,Jan 2025

DPS - TPE

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Koh 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 Koh Samui from London Heathrow?

    For a flight from London Heathrow to Koh 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 Koh 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 Koh Samui round-trip?

    Etihad Airways, at $1,048, was found to be the cheapest airline from London Heathrow Airport to Koh Samui.Alternate airlines to your destination round-trip include EVA Air and Singapore Airlines. Etihad Airways is currently priced 12% below the average price you’ll pay for this route.

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

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

  • How can I find direct flights from Heathrow to Koh Samui?

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Koh 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 Koh 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 Koh Samui

Discover the top airline that operate flights from Heathrow to Koh 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 January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$1,058Average$1,200FlexibilityNo cancel feeOn-time74%
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