692 € Cheap Flights from London Heathrow to Samui International

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Flight deals from London Heathrow to Samui International

Looking for a cheap last-minute deal or the best return flight from London Heathrow Airport to Samui International Airport? If you want to travel next month, return fares start from 973 €. Find the lowest prices on one-way and return tickets right here.

Koh Samui.692 € per passenger.Departing Sat, 19 Sep, returning Sun, 11 Oct.Return flight with Air China and Bangkok Airways.Outbound indirect flight with Air China, departs from London Heathrow on Sat, 19 Sep, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Sun, 11 Oct, arriving in London Heathrow.Price includes taxes and charges.From 692 €, select.

Koh Samui.737 € per passenger.Departing Sun, 8 Nov, returning Tue, 24 Nov.Return flight with Shenzhen Airlines and Bangkok Airways.Outbound indirect flight with Shenzhen Airlines, departs from London Heathrow on Sun, 8 Nov, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Tue, 24 Nov, arriving in London Heathrow.Price includes taxes and charges.From 737 €, select.

Koh Samui.756 € per passenger.Departing Tue, 1 Sep, returning Mon, 21 Sep.Return flight with Austrian Airlines and SWISS.Outbound indirect flight with Austrian Airlines, departs from London Heathrow on Tue, 1 Sep, arriving in Samui International.Inbound indirect flight with SWISS, departs from Samui International on Mon, 21 Sep, arriving in London Heathrow.Price includes taxes and charges.From 756 €, select.

Koh Samui.757 € per passenger.Departing Sun, 30 Aug, returning Tue, 15 Sep.Return flight with Austrian Airlines and SWISS.Outbound indirect flight with Austrian Airlines, departs from London Heathrow on Sun, 30 Aug, arriving in Samui International.Inbound indirect flight with SWISS, departs from Samui International on Tue, 15 Sep, arriving in London Heathrow.Price includes taxes and charges.From 757 €, select.

Koh Samui.765 € per passenger.Departing Sat, 21 Nov, returning Sat, 5 Dec.Return flight with Shenzhen Airlines and Bangkok Airways.Outbound indirect flight with Shenzhen Airlines, departs from London Heathrow on Sat, 21 Nov, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Sat, 5 Dec, arriving in London Heathrow.Price includes taxes and charges.From 765 €, select.

Koh Samui.784 € per passenger.Departing Tue, 1 Sep, returning Tue, 1 Dec.Return flight with China Eastern and Bangkok Airways.Outbound indirect flight with China Eastern, departs from London Heathrow on Tue, 1 Sep, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Tue, 1 Dec, arriving in London Heathrow.Price includes taxes and charges.From 784 €, select.

Koh Samui.850 € per passenger.Departing Sat, 17 Oct, returning Wed, 28 Oct.Return flight with Vueling Airlines and Bangkok Airways.Outbound indirect flight with Vueling Airlines, departs from London Heathrow on Sat, 17 Oct, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Wed, 28 Oct, arriving in London Heathrow.Price includes taxes and charges.From 850 €, select.

Koh Samui.876 € per passenger.Departing Thu, 1 Oct, returning Sun, 1 Nov.Return flight with Turkish Airlines and Bangkok Airways.Outbound indirect flight with Turkish Airlines, departs from London Heathrow on Thu, 1 Oct, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Sun, 1 Nov, arriving in London Heathrow.Price includes taxes and charges.From 876 €, select.

Koh Samui.877 € per passenger.Departing Sun, 7 Mar, returning Wed, 17 Mar.Return flight with Scandinavian Airlines and Bangkok Airways.Outbound indirect flight with Scandinavian Airlines, departs from London Heathrow on Sun, 7 Mar, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Wed, 17 Mar, arriving in London Heathrow.Price includes taxes and charges.From 877 €, select.

Koh Samui.878 € per passenger.Departing Thu, 10 Dec, returning Tue, 22 Dec.Return flight with Aegean Airlines and Bangkok Airways.Outbound indirect flight with Aegean Airlines, departs from London Heathrow on Thu, 10 Dec, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Tue, 22 Dec, arriving in London Heathrow.Price includes taxes and charges.From 878 €, select.

Koh Samui.882 € per passenger.Departing Tue, 2 Feb, returning Sun, 14 Feb.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from London Heathrow on Tue, 2 Feb, arriving in Samui International.Inbound indirect flight with Lufthansa, departs from Samui International on Sun, 14 Feb, arriving in London Heathrow.Price includes taxes and charges.From 882 €, select.

Koh Samui.882 € per passenger.Departing Thu, 11 Jun, returning Wed, 24 Jun.Return flight with Gulf Air and Bangkok Airways.Outbound indirect flight with Gulf Air, departs from London Heathrow on Thu, 11 Jun, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Wed, 24 Jun, arriving in London Heathrow.Price includes taxes and charges.From 882 €, select.

Koh Samui.884 € per passenger.Departing Tue, 23 Jun, returning Thu, 9 Jul.Return flight with Vueling Airlines and Bangkok Airways.Outbound indirect flight with Vueling Airlines, departs from London Heathrow on Tue, 23 Jun, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Thu, 9 Jul, arriving in London Heathrow.Price includes taxes and charges.From 884 €, select.

Koh Samui.912 € per passenger.Departing Fri, 9 Apr, returning Sun, 25 Apr.Return flight with Scandinavian Airlines and Bangkok Airways.Outbound indirect flight with Scandinavian Airlines, departs from London Heathrow on Fri, 9 Apr, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Sun, 25 Apr, arriving in London Heathrow.Price includes taxes and charges.From 912 €, select.

Koh Samui.919 € per passenger.Departing Wed, 13 Jan, returning Wed, 27 Jan.Return flight with Scandinavian Airlines and Bangkok Airways.Outbound indirect flight with Scandinavian Airlines, departs from London Heathrow on Wed, 13 Jan, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Wed, 27 Jan, arriving in London Heathrow.Price includes taxes and charges.From 919 €, select.

Koh Samui.919 € per passenger.Departing Sun, 17 Jan, returning Tue, 9 Feb.Return flight with Aegean Airlines and Bangkok Airways.Outbound indirect flight with Aegean Airlines, departs from London Heathrow on Sun, 17 Jan, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Tue, 9 Feb, arriving in London Heathrow.Price includes taxes and charges.From 919 €, select.

Find the cheapest month to fly from London Heathrow to Samui International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to Samui International flights are currently cheapest in November.

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London Heathrow to Samui International: Alternative routes

Compare routes from London Heathrow to Koh Samui below. You may find an airport to fly into that's cheaper, faster, or easier than Samui International.

Samui International

5km from central Koh Samui

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from 692 €

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London to Koh Samui: Flight information

The things to know before you go.

Cheapest flight found	692 €
Cheapest month to fly	September

Finding cheap flights from London Heathrow to Samui International: Frequently asked questions

How much are return flights from London Heathrow to Samui International?

The best price we found for a return flight from London Heathrow to Samui International is 692 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from London Heathrow to Samui International?

Currently, there are no airlines that fly direct from London Heathrow to Samui International. But we found flights with one or more stops from 692 €.

How many flights are there a week from London Heathrow to Samui International?

As of June 2026, there are no flights flying from London Heathrow to Samui International.

When is the cheapest time to fly from London Heathrow to Samui International?

The cheapest month to fly from London Heathrow to Samui International is usually September.

Which upcoming date is cheapest to fly from London Heathrow Airport to Samui International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Samui International Airport on Saturday, 19 September 2026.

Can I get a direct flight from London Heathrow Airport to Samui International Airport?

No airlines currently offer direct flights between London Heathrow Airport and Samui International Airport. Most routes have one or more stops.

How can I find the best flight deal to Samui International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Samui International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Koh Samui?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Koh Samui is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from London Heathrow Airport to Samui International with?

Currently, Air China offers the cheapest flight tickets to Samui International.

Flying from London Heathrow Airport (LHR) to Koh Samui Airport (USM): what you need to know

Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules worth sticking to. Make sure you're at the airport on time to catch your LHR to USM flight.
During popular months like July, it's best to get to the airport earlier than normal. Plan to arrive two hours before domestic departures and four hours ahead for international flights whenever you're flying during peak periods in general.
If you want to split up your journey, just deselect 'Direct flights only' when searching for your ticket from London Heathrow Airport to Koh Samui Airport. Here are the most popular stopovers between LHR and USM:
- Suvarnabhumi Airport
- Changi International Airport
- Hong Kong International Airport

How to find the cheapest flights from London Heathrow Airport (LHR) to Koh Samui Airport (USM)

373 € is the best price for a one-way London Heathrow Airport to Koh Samui Airport flight. A return flight starts at 692 €. These prices may change based on demand.
Don't leave things to the last minute. You're more likely to get cheap tickets from LHR to USM if you book early. Airlines often offer some amazing early bird discounts.
If you can be flexible with your travel plans, use the 'Whole month' tool. It'll give you the cheapest price across every month when searching for a flight from London Heathrow Airport to Koh Samui Airport.
There's no need to check back in every day to see if fares have dropped when you set up a Price Alert. We'll update you the moment there's a change in price on cheap flights from LHR to USM.
Tailor your trip using filters. Choose your ideal arrival and departure times, total journey duration and airlines. You can also sort results by 'Best,' 'Cheapest' or 'Fastest' flights from London Heathrow Airport to Koh Samui Airport.

Handy information about London Heathrow Airport (LHR)

When it comes to London Heathrow Airport's on-time performance, 68.18% of flights arrive within the expected timeframe.
London Heathrow Airport is around 31 kilometres from central London. If you're ride-sharing, catching a cab or driving from the centre, it'll take you 55 minutes or so to arrive, depending on the traffic.
Planning to catch public transport? You can expect a journey time of around 1 hour.
Get your break off to a hassle-free start by staying near LHR. Whether you're boarding an early flight from London Heathrow Airport to Koh Samui Airport or just don't like being rushed, these stays are perfect:

Arriving at Koh Samui Airport (USM)

If you're arriving on a late London Heathrow Airport to Koh Samui Airport flight, few things beat the convenience of staying close to the terminal. Grab your suitcases from the carousel and then be tucked up in bed shortly after at one of these options near USM:
Fast-track your adventure by picking up a Koh Samui Airport rental car. Grab a set of wheels from asap car hire, Hertz or Drive Car Hire and explore beyond Koh Samui's usual tourist stops.
Reserving your ride from Koh Samui Airport about four weeks in advance gives you the best shot at securing a great deal.

Getting from Koh Samui Airport (USM) to central Koh Samui

Koh Samui Airport to central Koh Samui is about 3 kilometres. Journey times will vary based on the time of day and traffic conditions, so checking a navigation app for real-time estimates is always a good idea.

When to fly to Koh Samui Airport (USM)

The quietest month for a flight from London Heathrow Airport to Koh Samui Airport is February, while July is the most popular. Choose the best time to go to Koh Samui based on whether you prefer a more relaxed vibe or a faster pace.

Explore more of Thailand

You've seen Koh Samui, now it's time to discover other corners of Thailand. Journey about 467 kilometres north to Bangkok to check off its leading sights. From Grand Palace to Wat Arun and Wat Phra Kaew, you've got a jam-packed schedule ahead.
Chon Buri is another must-experience destination in Thailand and is around 434 kilometres north of Koh Samui. No trip is complete without dropping by Wat Ton Son, Forest and Phra Phutthasihing Hall.