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Cheap flights from London Heathrow Airport to Koh Samui from £487

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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — USM
15 Dec — 22 Dec1
1 adult

The best prices from London Heathrow to Ko Samui are usually found in September or May, booked 4 days in advance, depart on a Monday or Tuesday and return on a Monday

Find flights from Heathrow to Koh Samui within your budget

Customise 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 898,331 searches. Data last updated 10 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Mon 19/5

21:20-10:30

2 stops31h 10m

Ko Samui

Sat 31/5

17:55-18:40

2 stops30h 45m

£807

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Sun 4/5

12:30-11:40

1 stop17h 10m

Ko Samui

Sun 18/5

08:45-19:10

1 stop16h 25m

£814

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Tue 18/2

21:20-19:50

1 stop15h 30m

Ko Samui

Tue 18/3

09:20-19:20

1 stop17h 00m

£814

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Wed 12/2

13:55-07:45

2 stops34h 50m

Ko Samui

Thu 13/3

19:00-12:05

2 stops24h 05m

£821

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Wed 15/1

10:55-08:00

1 stop38h 05m

Ko Samui

Tue 21/1

08:55-05:55

1 stop28h 00m

£869

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Tue 21/1

11:30-12:35

2 stops18h 05m

Ko Samui

Wed 26/2

11:40-08:00

2 stops27h 20m

£936

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Fri 28/3

18:55-21:05

1 stop19h 10m

Ko Samui

Fri 11/4

13:30-06:30

1 stop23h 00m

£983

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Thu 23/1

17:10-21:05

2 stops20h 55m

Ko Samui

Thu 30/1

16:25-13:00

2 stops27h 35m

£1,032

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Wed 15/1

21:10-18:25

2 stops38h 15m

£487

LondonKoh Samui

LHR - USM

LHRUSM

London Heathrow

Wed 15/1

21:35-20:55

1 stop16h 20m

£589

Flights are sorted by cheapest return flights first.

Deals found on 9/12

Showing 1-10 of 12 results
1
2

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 10 December 2024.

Round-trip from

£814

One-way from

£487

Popular in

December

Cheapest in

September

Average price

£1,275
EVA Air
  • EVA Air
  • 18/2-18/3
  • 2 total stops
  • 32h 30m total
  • London to Koh Samui
15/1
  • 15/1
  • 2 total stops
  • 38h 15m total
  • London to Koh Samui
High demand for flights, 7% potential price rise
Best time to find cheap flights, 3% potential price drop
Average for round-trip flights in December 2024

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 10 December 2024.

Mon 16/1208:55LHR - USM
3 stops24h 30mMultiple Airlines
Mon 23/1215:50USM - LHR
3 stops32h 40mMultiple Airlines
Deal found 9/12£994
Mon 16/1218:55LHR - USM
1 stop19h 10mBritish Airways
Mon 23/1216:25USM - LHR
1 stop20h 00mBritish Airways
Deal found 9/12£1,298
Mon 23/1209:10LHR - USM
1 stop20h 15mSingapore Airlines
Thu 23/108:55USM - LHR
1 stop37h 40mSingapore Airlines
Deal found 9/12£1,611
Mon 16/1216:30LHR - USM
2 stops21h 35mLufthansa
Mon 6/120:30USM - LHR
2 stops18h 35mLufthansa
Deal found 9/12£1,803
Sun 29/1221:35LHR - USM
1 stop15h 15mThai Airways
Sun 12/109:20USM - LHR
1 stop17h 15mThai Airways
Deal found 10/12£1,891
Sat 28/1220:55LHR - USM
2 stops32h 00mEtihad Airways
Sun 12/118:15USM - LHR
2 stops24h 50mEtihad Airways
Deal found 9/12£1,946
Thu 12/1211:00LHR - USM
1 stop25h 35mCathay Pacific
Sun 22/1207:55USM - LHR
2 stops28h 35mCathay Pacific
Deal found 9/12£2,024
Tue 24/1221:30LHR - USM
2 stops27h 15mQatar Airways
Sun 5/121:30USM - LHR
2 stops26h 55mQatar Airways
Deal found 9/12£2,349
Tue 24/1218:40LHR - USM
2 stops19h 25mSWISS
Wed 8/116:25USM - LHR
2 stops25h 50mSWISS
Deal found 9/12£2,368
Tue 24/1213:10LHR - USM
2 stops24h 35mFinnair
Tue 7/119:30USM - LHR
2 stops32h 10mFinnair
Deal found 9/12£2,380

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 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.

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 return flight from Heathrow to Koh Samui. Price data was last updated on 6 December 2024.

The best time to book flights from London Heathrow Airport to Koh Samui is 4 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 Koh Samui?

Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Koh Samui (average of £1,019). Flying from London Heathrow Airport to Koh Samui in December is currently the most expensive (average of £1,335). 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?

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 10 December 2024.

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to Koh Samui at midday. If you’re flexible enough to do this you can expect to save up to 21% 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 return from Heathrow to Koh Samui. Price data was last updated on 8 December 2024.

Travellers seeking maximum savings on their London Heathrow Airport to Koh Samui flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday 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 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 Koh Samui when rainfall is around 58.0 mm.

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 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).

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 10 December 2024.
Get a feel of what it's like to fly with Etihad Airways, Singapore Airlines and British Airways from London to Koh Samui by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.4
Very Good
1,284 reviews

Food

8.0

Entertainment

8.0

Crew

8.6

Boarding

8.4

Comfort

8.2

Overall

8.4

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

8.4
Very Good
1,284 reviews
8.4
Very Good
1,284 reviews

Food

8.0

Entertainment

8.0

Crew

8.6

Boarding

8.4

Comfort

8.2

Overall

8.4

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

8.1
Very Good
1,335 reviews
8.4
Very Good
1,284 reviews

Food

8.0

Entertainment

8.0

Crew

8.6

Boarding

8.4

Comfort

8.2

Overall

8.4

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

7.8
Good
361 reviews
8.4
Very Good
1,284 reviews

Food

8.0

Entertainment

8.0

Crew

8.6

Boarding

8.4

Comfort

8.2

Overall

8.4

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

7.6
Good
853 reviews
8.4
Very Good
1,284 reviews

Food

8.0

Entertainment

8.0

Crew

8.6

Boarding

8.4

Comfort

8.2

Overall

8.4

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

7.6
Good
1,614 reviews
8.4
Very Good
1,284 reviews

Food

8.0

Entertainment

8.0

Crew

8.6

Boarding

8.4

Comfort

8.2

Overall

8.4

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

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?

    Most people fly into Ko Samui (USM) if they book a flight to Koh Samui from London Heathrow. On average, Ko Samui has 0 inbound flights from London Heathrow per day from 10 airlines. Ko Samui is conveniently located just 2.1 mi from Koh Samui’s city center.

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

    Our cheapest airline available from London Heathrow Airport to Koh Samui is EVA Air. Our recent data shows that you can find tickets from as low as £814 on this airline. Additional options worth looking into are Etihad Airways and Thai Airways, starting at £821 and £829 round-trip. EVA Air is currently priced 13% below the average price you’ll pay for this route.

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

    £589 is the cheapest one-way deal found within the past few days, from Thai Airways. You may also be able to find cheap deals on Etihad Airways and Cathay Pacific, with prices starting from £624 and £1,609, respectively.

  • 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 holiday 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.

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

    Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Koh Samui (average of £1,019). Flying from London Heathrow Airport to Koh Samui in December is currently the most expensive (average of £1,335). 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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