Cheap flights from London to Koh Samui

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The best prices from London to Koh Samui are usually found in May or September, booked 13 days in advance, depart on a Tuesday or Monday and return on a Tuesday

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

All the information you need to plan the best LON to USM flight in 2021: compare London to Koh Samui flight prices with the expected peak season, weather and rainfall in Koh Samui.
LON - USM
Price
£575 - £989
USM
Temperature
27 - 29 °C
USM
Precipitation
58 - 490 mm

Popular in

December

High demand for flights, 33% potential price rise

Cheapest in

May

Best time to find cheap flights, 13% potential price drop

Round-trip from

575원

From London All airports (LON) to Koh Samui

One-way from

£407

One-way flight from London All airports (LON) to Koh Samui

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly return from London to Koh Samui?

Monday is generally a great day to depart. Flying on this day could help you save up to 8%.

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 £661. Cheapflights users have found deals in the month of May for as cheap as £509. 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 at midday. By choosing this option you can save up to 7% on the cost of your flight, compared to a flight in the morning.

Cheap flights from London to Koh Samui in September, October 2021

The best prices found for LON to USM flights in September, October
30 Oct - 19 Dec
£463pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
3 Oct - 17 Oct
£481pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
3 Oct - 17 Oct
£490pp
LCY
London City
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LCY
London City

London to Koh Samui 2021 flight deals

Cheap flights to Koh Samui from London found for this year
30 Oct - 19 Dec
£463pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
3 Oct - 17 Oct
£481pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
3 Oct - 17 Oct
£490pp
LCY
London City
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LCY
London City

Last-minute flights from London to Koh Samui

Late deals on return flights to Koh Samui from London, departing today and this week
3 Oct - 17 Oct
£481pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
3 Oct - 17 Oct
£490pp
LCY
London City
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LCY
London City
3 Oct - 17 Oct
£495pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
     
3 STOPS
LHR
London Heathrow

One-way flights to Ko Samui from London

The cheapest one-way flights from London to Koh Samui
05:20 - 09:55
Turkish Airlines
2 stops
45h 35m
LGW - USM
Turkish Airlines
£407
Bravofly
05:20 - 06:10
Finnair
2 stops
17h 50m
LHR - USM
Finnair
05:00 - 07:45
Multiple Airlines
2 stops
20h 45m
LHR - USM
Multiple Airlines
£1,039
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">London</span> to <span class="emphasized">Koh Samui</span> flights.

Flight FAQs

From London to Koh Samui

What airport do you fly into for flights to Koh Samui from London?

Most people fly into Koh 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 14 airlines. Koh Samui is conveniently located just 2.1 mi from Koh Samui’s city centre.

Which airlines flying from London to Koh Samui have flexible cancellations due to COVID-19?

Some of our airline partners flying from London to Koh Samui have new flexible policies in place due to COVID-19. British Airways, EVA Air, and Thai Airways are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like British Airways with this kind of flexibility.

What safety measures are being taken by airlines flying from London to Koh Samui to control the spread of COVID-19?

New policies can now be found on Etihad Airways to help keep travellers safe while flying. Airline carriers are regularly disinfecting and sanitising their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially-distanced seating (for a limited time) will work towards keeping travellers safer while flying from London to Koh Samui. Policies will vary by airline.

Are flight prices decreasing from London to Koh Samui due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both London and Koh Samui for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from London to Koh Samui for under £500 on Cheapflights?

Yes, there are multiple flights from London to Koh Samui for under £500. The cheapest flight booked recently is on Multiple Airlines for just £463, but on average you can expect to pay £515.

Are there last-minute flights available from London to Koh Samui for under £500?

There are currently 7+ open flights from London to Koh Samui within the next 7 days for less than £500.

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

One-way options have recently been found by users for as low as £337 on Finnair. Other airlines that offer cheap prices include Turkish Airlines from £407 and Emirates from £560 one-way.

What are the cheapest flights from London to Koh Samui?

Looking for the cheapest flight from London to Koh Samui? While on average our users pay £1,105, our data indicates the cheapest price to be £339. The most popular route (London Heathrow - Koh Samui), is priced around £463.

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

The most popular route from London to Koh Samui is London Heathrow - Koh Samui. You may also consider London City - Koh Samui or London Gatwick - Koh Samui.

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

The most popular airlines flying from London to Koh Samui are Air France, Finnair and British Airways. Something to consider prior to booking your flight.

COVID Restrictions

View COVID Travel Restrictions for Koh Samui, Thailand

Do I need a COVID test to fly to Koh Samui from London?

Information is based on travel restrictions from London to Koh Samui

Most visitors from London need to provide a negative COVID-19 test result and/or quarantine to enter Koh Samui.

COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Koh Samui.

Quarantine requirements
Visitors from London are not required to quarantine after entering Koh Samui.

Do I need a test to fly back to London from Koh Samui?

Returning to London from Koh Samui

COVID-19 testing requirements
Visitors from Koh Samui must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to London.

Quarantine requirements
Visitors from Koh Samui are not required to quarantine after entering London.

Hide COVID Travel Restrictions for Koh Samui, Thailand

Alternative routes for London to Koh Samui

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Koh Samui

Things to know before you go - useful duration and weather info for your trip from London to Koh Samui.
Today's exchange rate
£1 = ฿45.58
Average temperature for September in Koh Samui
32.0 °C
Avg rainfall for September in Koh Samui
123.0 mm

Airports servicing London

Gatwick (LGW)
Stansted (STN)
London City (LCY)
Luton (LTN)
Southend (SEN)

Airports servicing Koh Samui

Top 10 airlines flying from London to Koh Samui

The chart below displays the airlines Cheapflights users travelling from London to Koh Samui choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
KLM
£452 £615 No cancel fee 75%
Search KLM flights
Singapore Airlines
£489 £601 No cancel fee 81%
Search Singapore Airlines flights
Etihad Airways
£504 £565 No cancel fee 75%
Search Etihad Airways flights
Emirates
£512 £612 No cancel fee 75%
Search Emirates flights
Qatar Airways
£513 £747 No cancel fee 68%
Search Qatar Airways flights
Qantas Airways
£527 £737 No cancel fee 74%
Search Qantas Airways flights
EVA Air
£529 £665 No cancel fee 74%
Search EVA Air flights
Cathay Pacific
£535 £934 No cancel fee 72%
Search Cathay Pacific flights
British Airways
£543 £719 No cancel fee 70%
Search British Airways flights
Air France
£555 £783 No cancel fee 77%
Search Air France flights
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