Cheap flights from Heathrow to Ko Samui
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The best prices from Heathrow to Ko Samui are usually found in May or September, booked 56 days in advance, depart on a Tuesday or Thursday and return on a Tuesday
How to find the cheapest flight from
Heathrow (LHR) to Ko Samui (USM)
LHR - USM
£615 - £1,088
|Popular in||December||High demand for flights, 33% potential price rise|
|Cheapest in||May||Best time to find cheap flights, 16% potential price drop|
|Average price||£634||Average for round-trip flights in September 2020|
|Round-trip from||$615||From Heathrow to Ko Samui|
What is the cheapest day to fly return from Heathrow to Ko Samui?
It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.
How far in advance should I book a flight from Heathrow to Ko Samui?
Travellers have found it’s best to book a flight 61 days in advance to save up to 14% 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 61 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 £580, or £612 for flights within the next 24 hours.
What is the cheapest month to fly from Heathrow to Ko Samui?
Our data shows that September tends to be the cheapest month to fly to Ko Samui from Heathrow. Users have commonly found prices around £715 for the month, but tickets can be as low as £557. Due to multiple factors, prepare for potentially higher prices in December.
When is the cheapest time to fly from Heathrow to Ko Samui (LHR - USM)?
A simple way to save on the total cost of your ticket is to fly from Heathrow to Ko Samui in the evening. If you’re flexible enough to do this you can expect to save up to 7% on your trip compared to booking a flight in the morning.