Cheap flights from London Heathrow Airport to Koh Samui from £390
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Koh Samui departing on 15/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Deals available from 900+ travel sites.
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from London Heathrow Airport to Koh Samui
Cheap return flights
Cheap one-way flights
Cheap last-minute flights
Cheap direct flights
Cheap bus & train deals from London Heathrow Airport to Koh Samui
All return flight deals from London Heathrow Airport to Koh Samui
Thai Airways flights from London Heathrow Airport to Koh Samui
Our best Thai Airways deals on London Heathrow Airport to Koh Samui flight tickets
Turkish Airlines flights from London Heathrow Airport to Koh Samui
Our best Turkish Airlines deals on London Heathrow Airport to Koh Samui flight tickets
See travel insights to Koh Samui from
How to get the cheapest flight ticket from London Heathrow Airport to Koh Samui
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Koh Samui?
The month of September is, on average, the cheapest month to fly to Koh Samui from London Heathrow Airport, with most prices found around £834. If you aren’t able to travel during the month of September, then book flights to Koh Samui from London Heathrow Airport during May instead. Flights to Koh Samui in May, while not as cheap as those in September, still average around £865.
What is the cheapest day to depart on your flight to Koh Samui?
Our data shows that Monday is the least expensive day to fly to Koh Samui. Tickets to fly out on this day can be as low as £900. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Koh Samui for around £980.
What is the cheapest time of day to depart on your flight to Koh Samui?
Our data shows that the cheapest London Heathrow Airport to Koh Samui flights are usually those with departure times in the evening. Our users have found flights to Koh Samui in the evening for as low as £901. Try not to purchase tickets in the morning because they tend to be around £1,098. Of course, these prices can vary depending on the time of year and what airport you fly to.
How far in advance should I book a flight to Koh Samui?
You are more likely to see cheaper flights to Koh Samui from London Heathrow Airport when booking 9 weeks ahead of your departure date. In general, you can expect to find flights to Koh Samui for around £978 when searching 9 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Koh Samui from London Heathrow Airport for as low as £871 on momondo.
What is the cheapest airline that flies from London Heathrow to Ko Samui?
EVA Air, Emirates, and Singapore Airlines are the most popular carriers operating from London Heathrow to Ko Samui
Which airlines fly to Koh Samui?
EVA Air, Thai Airways and British Airways are the top three most popular airlines that fly to Koh Samui from London Heathrow Airport according to our data. EVA Air is the first choice among our users, with 62% of people opting to fly with this airline when travelling to Koh Samui. Keep in mind that there are 9 different airlines that fly to Koh Samui on a routine basis, so you have a few additional options to choose from.
When to book flights from London Heathrow Airport to Koh Samui
Cheap London Heathrow Airport to Koh Samui (LHR to USM) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Koh Samui
How far is London Heathrow to Ko Samui by plane?
The straight-line distance from London Heathrow to Ko Samui is 6145.4 mi. Flights usually cover this in 14h 20m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London Heathrow Airport to Ko Samui Airport?
Prices for flights from London Heathrow Airport to Ko Samui Airport were last updated today.
How many operators does momondo search for flights from London Heathrow Airport to Ko Samui Airport?
As of January 2025, there are 9 operators available to choose from for flights from London Heathrow Airport to Ko Samui Airport.
How old do you have to be to fly from London Heathrow Airport to Ko Samui Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Ko Samui Airport.
What documentation or ID do you need to fly to Ko Samui Airport?
The required travel and health documents for your Ko Samui Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ko Samui Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from London Heathrow Airport to Koh Samui?
momondo data reveals that the most frequently booked airline on the route from London Heathrow Airport to Koh Samui is EVA Air, representing 57% of all bookings. The subsequent popular airlines are Thai Airways at 23%, British Airways at 7%, and Singapore Airlines at 5%.
Best airlines flying from London Heathrow Airport to Koh Samui
Compare and see reviews for airlines that fly from London Heathrow Airport to Koh Samui with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £109 | Free Cancellation | Rating 8.0 129 reviews | |||
| PriceFrom £652 | Free Cancellation | Rating 7.4 1,490 reviews | |||
| PriceFrom £667 | Free Cancellation | Rating 7.8 1,341 reviews | |||
| PriceFrom £679 | Free Cancellation | Rating 7.3 1,199 reviews | |||
| PriceFrom £758 | Free Cancellation | Rating 8.1 1,328 reviews | |||
| PriceFrom £776 | Free Cancellation | Rating 8.4 1,253 reviews | |||
| PriceFrom £792 | Free Cancellation | Rating 6.6 6,834 reviews | |||
| PriceFrom £859 | Free Cancellation | Rating 7.8 338 reviews | |||
| PriceFrom £875 | Free Cancellation | Rating 7.5 3,752 reviews |
Travelling to a place near Koh Samui?
Book flights to Koh Samui if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from London to Koh Samui?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Koh Samui for you.
Can I find flights from London to Koh Samui with flexible booking policies on momondo?
momondo does allow users to show only those flights to Koh Samui from London which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from London to Koh Samui?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Koh Samui.
I’m not ready to book a flight from London to Koh Samui right now. Can momondo alert me if prices change?
If you are not ready to book a flight from London to Koh Samui now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Koh Samui and let you know when they change.