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Cheap flights from London to Koh Samui from £399

This is the cheapest one-way flight price, found on 5/12. Prices may vary by date and flight preferences.
LON — USM
11 Dec — 18 Dec1
1 adult
Mon 11/12
Mon 18/12

The best prices from London to Ko Samui are usually found in May or September, booked 79 days in advance, depart on a Monday or Sunday and return on a Wednesday

Flights from Koh Samui to London

How to find the cheapest flight from London (LON) to Koh Samui (USM)

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 6 December 2023.

Popular in

December

Cheapest in

May

Round-trip from

£666

One-way from

£441
High demand for flights, 31% potential price rise
Best time to find cheap flights, 16% potential price drop
From London (LON) to Ko Samui
One-way flight from London (LON) to Ko Samui

What is the cheapest day to fly round-trip from London to Koh Samui?

Sunday is generally a great day to depart. Flying on this day could help you save up to 6%.

How far in advance should I book a flight from London to Koh Samui?

To save on the cost of your flight from London to Koh Samui, book at least 25 days before your planned departure. Booking around this time can save you about 25% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £981 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £1,090.

What is the cheapest month to fly from London to Koh Samui?

May can be a great time to fly to Koh Samui from London with a flight ticket averaging about £1,013. Cheapflights users have found deals in the month of May for as cheap as £730. The most expensive prices can be found in the month of December.

When is the cheapest time to fly from London to Koh Samui (LON - USM)?

It’s optimal to fly from London to Koh Samui in the evening. By choosing this option you can save up to 18% on the cost of your flight, compared to a flight in the morning.

Cheap Cathay Pacific flights from London to Koh Samui

Explore cheap flight options specifically provided by Cathay Pacific for the route between London and Koh Samui. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 815,420 searches. Data last updated 6 December 2023.
Check out some of the cheapest Cathay Pacific flights we've come across from London to Koh Samui. It's recommended that users confirm their flight details before booking.

Cheap EVA Air flights from London to Koh Samui

Explore cheap flight options specifically provided by EVA Air for the route between London and Koh Samui. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 815,420 searches. Data last updated 6 December 2023.
Have a look at some of the cheapest available EVA Air flights departing from London and landing in Koh Samui. Check back soon if you're not seeing flights that suit your needs.

Cheap London to Koh Samui flights in December & January 2023

Find cheap flight options from London to Koh Samui specifically for the months of December and January 2023. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 815,420 searches. Prices were last updated on 6 December 2023.
Listed are some of the best fares we've found on flights departing from London to Koh Samui in 2023. Check back regularly for other flight deals.

London to Koh Samui 2023 flight deals

Discover exclusive flight deals for travel between London and Koh Samui in 2023. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 815,420 searches. Data last updated 6 December 2023.
Listed are some of the best fares we've found on flights departing from London to Koh Samui in 2023. Check back regularly for other flight deals.

London to Koh Samui flights leaving soon

Find last-minute flight options from London to Koh Samui for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 815,420 searches. Data last updated 6 December 2023.
Have a look at some of the last-minute flights available departing from London to Koh Samui. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.

One-way flights to Koh Samui from London

Search for one-way flight options from London to Koh Samui. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 815,420 searches. Data last updated 6 December 2023.
Users in need of a one-way flight from London to Koh Samui can choose from these deals. Users in need of a round-trip flight from London to Koh Samui instead should update the search form at the top of page.

Find flights from London to Koh Samui within your budget

Customise your flight search to find flights from London 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 815,420 searches. Data last updated 6 December 2023.

Fly from

Any airport

Fly to

Any airport

Budget

£717 - £1,039

Route

Depart

Return

Price

London GatwickKo Samui

LGW - USM

LGWUSM

London Gatwick

Thu 9/5

2 stops23h 20m

Ko Samui

Fri 24/5

2 stops35h 15m

£717

London HeathrowKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 18/4

2 stops27h 25m

Ko Samui

Thu 9/5

2 stops23h 00m

£758

London HeathrowKo Samui

LHR - USM

LHRUSM

London Heathrow

Tue 2/4

2 stops23h 40m

Ko Samui

Tue 9/4

2 stops29h 35m

£792

London HeathrowKo Samui

LHR - USM

LHRUSM

London Heathrow

Sun 25/2

1 stop15h 25m

Ko Samui

Thu 30/5

1 stop16h 35m

£809

London HeathrowKo Samui

LHR - USM

LHRUSM

London Heathrow

Fri 8/3

1 stop18h 45m

Ko Samui

Mon 18/3

1 stop24h 55m

£857

London StanstedKo Samui

STN - USM

STNUSM

London Stansted

Sun 25/2

2 stops20h 05m

Ko Samui

Thu 30/5

2 stops23h 25m

£918

London HeathrowKo Samui

LHR - USM

LHRUSM

London Heathrow

Fri 1/3

3 stops38h 40m

Ko Samui

Wed 13/3

2 stops28h 15m

£940

London HeathrowKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 18/4

2 stops20h 15m

Ko Samui

Thu 9/5

1 stop24h 15m

£946

London HeathrowKo Samui

LHR - USM

LHRUSM

London Heathrow

Sat 6/1

1 stop16h 40m

Ko Samui

Sat 20/1

1 stop18h 15m

£1,039

Flights are sorted by cheapest first

Deals found on 6/12

Average price of flights to Koh Samui by month

Plan your trip from London to Koh Samui by taking into account the cheapest months to travel. The average price of a one-way flight from London to Koh Samui is currently 436.05 GBP while a return flight costs 864.26 GBP. Price data was last updated on 3 December 2023.

Currently, May is the cheapest month in which you can book a flight from London to Koh Samui (average of £1,060). Flying from London to Koh Samui in July is currently the most expensive (average of £1,398). 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.

January

£968

February

£911

March

£938

April

£890

May

£840

June

£915

July

£1,108

August

£907

September

£859

October

£917

November

£896

December

£977

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 6 December 2023.
Read reviews from past customers who have flown Cathay Pacific, EVA Air and Etihad Airways from London to Koh Samui. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very Good
196 reviews

Boarding

8.0

Crew

8.2

Overall

8.1

Entertainment

7.6

Comfort

8.0

Food

7.8

Reviews

1 / 10

Very expensive for seat selections, $50 for a seat from Hong Kong to Taipei, and $170 from Taipei to San Francisco.

8.1
Very Good
196 reviews
8.1
Very Good
196 reviews

Boarding

8.0

Crew

8.2

Overall

8.1

Entertainment

7.6

Comfort

8.0

Food

7.8

Reviews

1 / 10

Very expensive for seat selections, $50 for a seat from Hong Kong to Taipei, and $170 from Taipei to San Francisco.

8.1
Very Good
341 reviews
8.1
Very Good
196 reviews

Boarding

8.0

Crew

8.2

Overall

8.1

Entertainment

7.6

Comfort

8.0

Food

7.8

Reviews

1 / 10

Very expensive for seat selections, $50 for a seat from Hong Kong to Taipei, and $170 from Taipei to San Francisco.

7.9
Good
1,316 reviews
8.1
Very Good
196 reviews

Boarding

8.0

Crew

8.2

Overall

8.1

Entertainment

7.6

Comfort

8.0

Food

7.8

Reviews

1 / 10

Very expensive for seat selections, $50 for a seat from Hong Kong to Taipei, and $170 from Taipei to San Francisco.

7.7
Good
48 reviews
8.1
Very Good
196 reviews

Boarding

8.0

Crew

8.2

Overall

8.1

Entertainment

7.6

Comfort

8.0

Food

7.8

Reviews

1 / 10

Very expensive for seat selections, $50 for a seat from Hong Kong to Taipei, and $170 from Taipei to San Francisco.

7.6
Good
276 reviews
8.1
Very Good
196 reviews

Boarding

8.0

Crew

8.2

Overall

8.1

Entertainment

7.6

Comfort

8.0

Food

7.8

Reviews

1 / 10

Very expensive for seat selections, $50 for a seat from Hong Kong to Taipei, and $170 from Taipei to San Francisco.

Average temperature in Koh Samui by month

Plan your trip to Koh Samui by selecting the month that matches your preferred temperature. January sees the highest average temperature while April sees the lowest average temperature. Temperature data was last updated on 3 December 2023.

USM

Temperature

27 - 29 °C

Average rainfall in Koh Samui by month

Keep in mind the precipitation totals in Koh Samui by selecting the month that matches your preferred temperature. Koh Samui sees an average of 163.25 precipitation per year with the most occurring in November. Precipitation data was last updated on 3 December 2023.

USM

Rainfall

58 - 490 mm

Related info for your journey

Find useful and relevant information for your journey from London 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?

Most people fly into Ko Samui (USM) if they book a flight to Koh Samui from London. On average, Ko Samui has 0 inbound flights from London per day from 12 airlines. Ko Samui is conveniently located just 2.1 mi from Koh Samui’s city center.

Can I find flights from London to Koh Samui for under £800 on Cheapflights?

Yes, there are multiple flights from London to Koh Samui for under £800. The cheapest flight booked recently is on Multiple Airlines for just £717, but on average you can expect to pay £784.

Are there last-minute flights available from London to Koh Samui for under £900?

There are currently 10+ open flights from London to Koh Samui within the next 7 days for less than £900.

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

Our cheapest airline available from London to Koh Samui is Etihad Airways. Our recent data shows that you can find tickets from as low as £758 on this airline. Additional options worth looking into are Air France and EVA Air, starting at £792 and £809 round-trip. Etihad Airways is priced at 25% lower than the current average price of a flight leaving 3 months from now.

What are the most popular routes from London to Koh Samui?

What are the most popular airlines that fly from London to Koh Samui?

What does LHR to USM mean?

LHR and USM are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. LHR to USM refers to a flight route from London Heathrow Airport to Ko Samui Airport. Ready for more IATA code knowledge? These are related airports for your current travel destination: London Gatwick Airport (LGW), London City Airport (LCY), London Stansted Airport (STN), London Luton Airport (LTN), London Southend Airport (SEN).

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from London to Koh Samui on these airlines
Choose from the following airlines for your flight from London to Koh Samui. Flights are based on user searches made on Cheapflights and were last updated on 6 December 2023.

Top 10 airlines flying from London to Koh Samui

Discover the top 10 airlines that operate flights from London 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 815,420 searches. Data last updated 6 December 2023.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£91Average£135FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Etihad AirwaysCheapest£713Average£774FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Cathay PacificCheapest£736Average£816FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Air FranceCheapest£746Average£852FlexibilityNo cancel feeOn-time77%
Search Air France flights
Qantas AirwaysCheapest£774Average£1,064FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
EVA AirCheapest£786Average£911FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
Singapore AirlinesCheapest£837Average£1,034FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
EmiratesCheapest£843Average£1,009FlexibilityNo cancel feeOn-time75%
Search Emirates flights
Qatar AirwaysCheapest£850Average£1,175FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
British AirwaysCheapest£862Average£1,101FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Search flights to Koh Samui by cabin class

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Koh Samui?

When you search for this flight from London to Koh Samui, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from London to Koh Samui?

Cheapflights simply makes it quick and affordable to book flights from London to Koh 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 London to Koh Samui with no change fees?

Need flexible booking options for your flight to Koh Samui from London? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from London to Koh Samui become cheaper?

Not ready to book yet? You can track prices for flights from London to Koh Samui on Cheapflights with our Price Alert feature and get notified when better prices are available.

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