Cheap flights from Heathrow to Ko Samui

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How to find the cheapest flight from
Heathrow (LHR) to Ko Samui (USM)

All the information you need to plan the best LHR to USM flight in 2021: compare Heathrow to Ko Samui flight prices with the expected peak season, weather and rainfall in Ko Samui.
LHR - USM
Price
£564 - £1,005

Popular in

December

High demand for flights, 34% potential price rise

Cheapest in

May

Best time to find cheap flights, 15% potential price drop

Average price

£681

Average for round-trip flights in April 2021

Round-trip from

£564

From Heathrow to Ko Samui

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
How far in advance should I book a flight from Heathrow to Ko Samui?

Travellers have found it’s best to book a flight 13 days in advance to save up to 0% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 13 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Heathrow to Ko Samui 1-2 weeks in advance for as low as £640, or £651 for flights within the next 24 hours.

What is the cheapest month to fly from Heathrow to Ko Samui?

Our data shows that May tends to be the cheapest month to fly to Ko Samui from Heathrow. Users have commonly found prices around £654 for the month, but tickets can be as low as £503. Due to multiple factors, prepare for potentially higher prices in December.

Cheap flights from Heathrow to Ko Samui in April, May 2021

The best prices found for LHR to USM flights in April, May
24 Apr - 30 Apr
£509pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
17 Apr - 25 Apr
£528pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
17 Apr - 20 Apr
£575pp
LHR
London Heathrow
Multiple airlines
     
3 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow

Heathrow to Ko Samui 2021 flight deals

Cheap flights to Ko Samui from Heathrow found for this year
1 Jul - 16 Jul
£483pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
23 Nov - 16 Dec
£506pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
24 Apr - 30 Apr
£509pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow

Last-minute flights from Heathrow to Ko Samui

Late deals on return flights to Ko Samui from Heathrow, departing today and this week
24 Apr - 30 Apr
£509pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
24 Apr - 30 Apr
£692pp
LHR
London Heathrow
Multiple airlines
     
3 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow

One-way flights to Ko Samui from Heathrow

The cheapest one-way flights from Heathrow to Ko Samui
17:35 - 06:00
Multiple Airlines
1 stop
30h 25m
LHR - USM
Multiple Airlines
£1,431
Combigo
13:10 - 13:35
KLM
2 stops
18h 25m
LHR - USM
KLM
£420
KLM

Related info for your journey

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

Flight FAQs

From Heathrow to Ko Samui

Are flight prices decreasing from Heathrow 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 Heathrow 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.

What safety measures are being taken by airlines flying from London Heathrow 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. Some of the new policies that have been implemented to accommodate travellers flying from London Heathrow to Koh Samui are improved sanitation, HEPA filters, mask requirements, socially-distanced seating (for a limited time), and pre-flight testing for antibodies and symptoms. Policies will vary by airline.

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

Due to the rapidly changing circumstances due to COVID-19, airlines like British Airways, EVA Air, and Thai Airways flying from London Heathrow to Koh Samui have implemented new flexible cancellation policies.

Can I find flights from Heathrow to Ko Samui for under £507 on Cheapflights?

Yes, there are multiple flights from Heathrow to Ko Samui for under £507. The cheapest flight booked recently is on Multiple Airlines for just £483, but on average you can expect to pay £554.

Are there direct flights from Heathrow to Ko Samui for under £507 on Cheapflights?

There are no direct flights from Heathrow to Ko Samui, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Are there last-minute flights available from Heathrow to Ko Samui for under £580?

There are currently 2+ open flights from Heathrow to Ko Samui within the next 7 days for less than £580.

Does it rain more in Heathrow or Koh Samui?

When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Heathrow is roughly similar to Koh Samui. You can assume this to be the case over the next 20 days.

Is Heathrow weather warmer or cooler than Koh Samui?

Temperatures around the 33 °Cs can be experienced in May. The weather in Koh Samui is hotter than in Heathrow. Plan for potential changes in flight availability as peak weather approaches in this location.

How long does is the flight from Heathrow to Ko Samui?

A quick flight from Heathrow to Ko Samui can take about 17h 55m. Air France provides one of the quickest options available for as low as £541.

What is the cheapest airline to fly from Heathrow to Ko Samui return?

Our cheapest airline available from Heathrow to Ko Samui is Air France. Our recent data shows that you can find tickets from as low as £541 on this airline. Air France is 18% cheaper than the average price of flights available within the next 90 days to this destination.

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

For one-way options, check prices for KLM. According to our data, you can fly for as low as £420.

Alternative routes for Heathrow to Ko Samui

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

Destination information for Ko Samui

Things to know before you go - useful duration and weather info for your trip from Heathrow to Ko Samui.
Today's exchange rate
£1 = ฿43.02

Airports servicing London

Airports servicing Koh Samui

Top 10 airlines flying from Heathrow to Ko Samui

The chart below displays the airlines Cheapflights users travelling from Heathrow to Ko 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
Etihad Airways
£687 £771 No cancel fee 75%
Search Etihad Airways flights
Singapore Airlines
£667 £820 No cancel fee 81%
Search Singapore Airlines flights
KLM
£617 £840 No cancel fee 75%
Search KLM flights
Emirates
£731 £846 No cancel fee 75%
Search Emirates flights
EVA Air
£722 £908 No cancel fee 74%
Search EVA Air flights
British Airways
£741 £982 No cancel fee 70%
Search British Airways flights
Cathay Pacific
£780 £1,004 No cancel fee 72%
Search Cathay Pacific flights
Qantas Airways
£719 £1,005 No cancel fee 74%
Search Qantas Airways flights
Qatar Airways
£757 £1,014 No cancel fee 68%
Search Qatar Airways flights
Air France
£757 £1,068 No cancel fee 77%
Search Air France flights
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