Cheap flights from Heathrow to Koh Samui

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The best prices from Heathrow to Koh Samui are usually found in May or September, booked 53 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

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

LHR - USM
Price
£552 - £984
USM
Temperature
29 - 33 °C
USM
Rainfall
50 - 423 mm

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

£611

Average for round-trip flights in February 2021

Round-trip from

£552

From Heathrow 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 Heathrow to Koh Samui?

Flying to your destination on a Thursday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Koh Samui. Check prices with Cheapflights to find a great deal for your trip.

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

To save up to 0% on this flight, we recommend booking at least 13 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Heathrow to Koh Samui from £627 1-2 weeks out and tickets from £637 for flights departing within the next 72 hours.

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

May is one of the best times of the year to fly to Koh Samui from Heathrow. Prices for May average £640 per person but you can even find prices for as low as £493. The most expensive prices can be found in the month of December. Opting for a May flight can save you 49% on your journey compared to booking in May

When is the cheapest time to fly from Heathrow to Koh Samui (LHR - USM)?

It’s typically best to fly out from Heathrow to Koh Samui in the evening. Doing so could potentially save you 7% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap flights from Heathrow to Koh Samui in February, March 2021

30 Mar - 30 Apr
£574pp
LHR
London Heathrow
Emirates
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Emirates
   
2 STOPS
LHR
London Heathrow
25 Feb - 19 Apr
£590pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
24 Feb - 18 Mar
£593pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow

Heathrow to Koh Samui 2021 flight deals

3 Jun - 17 Jun
£459pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
9 Sep - 21 Sep
£466pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
27 Oct - 9 Nov
£467pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
USM
Koh Samui
USM
Koh Samui
Multiple Airlines
   
2 STOPS
LHR
London Heathrow

One-way flights to Koh Samui from Heathrow

08:30 - 05:15
Multiple Airlines
1 stop
14h 45m
LHR - USM
Multiple Airlines
£592
Kiwi.com
02:30 - 13:35
Multiple Airlines
2 stops
29h 05m
LHR - USM
Multiple Airlines
£425
World Air Fares
15:25 - 07:45
Multiple Airlines
3 stops
34h 20m
LHR - USM
Multiple Airlines
£441
Kiwi.com

Related info for your journey

Flight FAQs

From Heathrow to Koh 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 Koh Samui for under £497 on Cheapflights?

Yes, there are multiple flights from Heathrow to Koh Samui for under £497. The cheapest flight booked recently is on Multiple Airlines for just £459, but on average you can expect to pay £534.

Are there direct flights from Heathrow to Koh Samui for under £426 on Cheapflights?

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

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 Koh Samui?

There are many flights that can get you from Heathrow to Koh Samui in 17h 40m. Fly via Finnair or Emirates to get the fastest option. Both multi-stop and direct flights can be found to your destination and back.

What are the cheapest airlines to flying from Heathrow to Koh Samui return?

Currently priced at £575, Emirates will fly you from Heathrow to Koh Samui and back. In addition to Emirates, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Finnair for as low as £590. These flights start at 11% lower than the current average price 3 months from now.

Alternative routes for Heathrow to Koh Samui

Destination information for Koh Samui

Today's exchange rate
£1 = ฿42.25
Average temperature for February in Koh Samui
29.0 °C
Avg rainfall for February in Koh Samui
50.0 mm

Airports servicing London

Airports servicing Koh Samui

Top 10 airlines flying from Heathrow to Koh Samui

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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