Cheap Flights from Samui International to London Heathrow

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Compare Samui International to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

Book the best London Heathrow fare with no extra fees

Flight deals Cheapest month Find the best route Route info FAQs Tips and advice

Flight deals from Samui International to London Heathrow

Looking for a cheap last-minute deal or the best return flight from Samui International Airport to London Heathrow Airport? If you want to travel next month, return fares start from $1,992. Find the lowest prices on one-way and return tickets right here.

London.$1,825 per passenger.Departing Mon, 21 Sep, returning Sat, 26 Sep.Return flight with Bangkok Airways and Gulf Air.Outbound indirect flight with Bangkok Airways, departs from Samui International on Mon, 21 Sep, arriving in London Heathrow.Inbound indirect flight with Gulf Air, departs from London Heathrow on Sat, 26 Sep, arriving in Samui International.Price includes taxes and charges.From $1,825, select.

London.$1,825 per passenger.Departing Thu, 17 Sep, returning Fri, 2 Oct.Return flight with Bangkok Airways and Gulf Air.Outbound indirect flight with Bangkok Airways, departs from Samui International on Thu, 17 Sep, arriving in London Heathrow.Inbound indirect flight with Gulf Air, departs from London Heathrow on Fri, 2 Oct, arriving in Samui International.Price includes taxes and charges.From $1,825, select.

London.$1,992 per passenger.Departing Thu, 1 Oct, returning Sat, 31 Oct.Return flight with Bangkok Airways and Etihad Airways.Outbound indirect flight with Bangkok Airways, departs from Samui International on Thu, 1 Oct, arriving in London Heathrow.Inbound indirect flight with Etihad Airways, departs from London Heathrow on Sat, 31 Oct, arriving in Samui International.Price includes taxes and charges.From $1,992, select.

London.$2,026 per passenger.Departing Sun, 11 Oct, returning Sun, 1 Nov.Return flight with Bangkok Airways and Etihad Airways.Outbound indirect flight with Bangkok Airways, departs from Samui International on Sun, 11 Oct, arriving in London Heathrow.Inbound indirect flight with Etihad Airways, departs from London Heathrow on Sun, 1 Nov, arriving in Samui International.Price includes taxes and charges.From $2,026, select.

London.$2,047 per passenger.Departing Tue, 11 May, returning Tue, 25 May.Return flight with Emirates.Outbound indirect flight with Emirates, departs from Samui International on Tue, 11 May, arriving in London Heathrow.Inbound indirect flight with Emirates, departs from London Heathrow on Tue, 25 May, arriving in Samui International.Price includes taxes and charges.From $2,047, select.

London.$2,056 per passenger.Departing Mon, 2 Nov, returning Tue, 17 Nov.Return flight with Bangkok Airways and Gulf Air.Outbound indirect flight with Bangkok Airways, departs from Samui International on Mon, 2 Nov, arriving in London Heathrow.Inbound indirect flight with Gulf Air, departs from London Heathrow on Tue, 17 Nov, arriving in Samui International.Price includes taxes and charges.From $2,056, select.

London.$2,074 per passenger.Departing Thu, 4 Mar, returning Mon, 8 Mar.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Samui International on Thu, 4 Mar, arriving in London Heathrow.Inbound indirect flight with Qatar Airways, departs from London Heathrow on Mon, 8 Mar, arriving in Samui International.Price includes taxes and charges.From $2,074, select.

London.$2,184 per passenger.Departing Mon, 1 Feb, returning Mon, 8 Feb.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Samui International on Mon, 1 Feb, arriving in London Heathrow.Inbound indirect flight with Qatar Airways, departs from London Heathrow on Mon, 8 Feb, arriving in Samui International.Price includes taxes and charges.From $2,184, select.

London.$2,197 per passenger.Departing Sat, 27 Mar, returning Sat, 3 Apr.Return flight with Emirates.Outbound indirect flight with Emirates, departs from Samui International on Sat, 27 Mar, arriving in London Heathrow.Inbound indirect flight with Emirates, departs from London Heathrow on Sat, 3 Apr, arriving in Samui International.Price includes taxes and charges.From $2,197, select.

London.$2,259 per passenger.Departing Mon, 26 Apr, returning Fri, 7 May.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Samui International on Mon, 26 Apr, arriving in London Heathrow.Inbound indirect flight with Qatar Airways, departs from London Heathrow on Fri, 7 May, arriving in Samui International.Price includes taxes and charges.From $2,259, select.

London.$2,278 per passenger.Departing Thu, 29 Oct, returning Tue, 1 Dec.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Samui International on Thu, 29 Oct, arriving in London Heathrow.Inbound indirect flight with Qatar Airways, departs from London Heathrow on Tue, 1 Dec, arriving in Samui International.Price includes taxes and charges.From $2,278, select.

London.$2,304 per passenger.Departing Thu, 24 Dec, returning Thu, 7 Jan.Return flight with Thai Airways.Outbound indirect flight with Thai Airways, departs from Samui International on Thu, 24 Dec, arriving in London Heathrow.Inbound indirect flight with Thai Airways, departs from London Heathrow on Thu, 7 Jan, arriving in Samui International.Price includes taxes and charges.From $2,304, select.

London.$2,382 per passenger.Departing Tue, 27 Oct, returning Thu, 14 Jan.Return flight with Bangkok Airways and EVA Air.Outbound indirect flight with Bangkok Airways, departs from Samui International on Tue, 27 Oct, arriving in London Heathrow.Inbound indirect flight with EVA Air, departs from London Heathrow on Thu, 14 Jan, arriving in Samui International.Price includes taxes and charges.From $2,382, select.

London.$2,389 per passenger.Departing Mon, 21 Dec, returning Wed, 30 Dec.Return flight with Qatar Airways and Etihad Airways.Outbound indirect flight with Qatar Airways, departs from Samui International on Mon, 21 Dec, arriving in London Heathrow.Inbound indirect flight with Etihad Airways, departs from London Heathrow on Wed, 30 Dec, arriving in Samui International.Price includes taxes and charges.From $2,389, select.

London.$2,468 per passenger.Departing Thu, 8 Jul, returning Fri, 9 Jul.Return flight with Bangkok Airways and EVA Air.Outbound indirect flight with Bangkok Airways, departs from Samui International on Thu, 8 Jul, arriving in London Heathrow.Inbound indirect flight with EVA Air, departs from London Heathrow on Fri, 9 Jul, arriving in Samui International.Price includes taxes and charges.From $2,468, select.

London.$2,545 per passenger.Departing Wed, 11 Aug, returning Sun, 15 Aug.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Samui International on Wed, 11 Aug, arriving in London Heathrow.Inbound indirect flight with Qatar Airways, departs from London Heathrow on Sun, 15 Aug, arriving in Samui International.Price includes taxes and charges.From $2,545, select.

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

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

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Samui International to London Heathrow: Alternative routes

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

Koh Samui to London: Flight information

The things to know before you go.

Cheapest flight found	$1,825
Cheapest month to fly	September

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

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

The best price we found for a return flight from Samui International to London Heathrow is $1,825. 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 Samui International to London Heathrow?

Currently, there are no airlines that fly direct from Samui International to London Heathrow. But we found flights with one or more stops from $1,825.

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

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

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

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

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

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Samui International Airport to London Heathrow Airport on Monday, 21 September 2026.

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

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

How can I find the best flight deal to London Heathrow?

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 London Heathrow 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 London?

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

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

Currently, Bangkok Airways offers the cheapest flight tickets to London Heathrow.

Travelling from Samui International Airport (USM) to London Heathrow Airport (LHR): what you need to know

London's timezone is UTC+0, making London seven hours behind Koh Samui.
Your USM to LHR flight won't wait if you're late, so be at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.
During popular months like December, you'll want to get to the airport earlier. Plan to arrive two hours before domestic departures and four hours ahead for international flights when you fly during peak periods in general.

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

The lowest price we've seen for a one-way Samui International Airport to London Heathrow Airport flight is $812. A return fare right now is $1,825. Depending on the availability and when you book, these fares may change.
Don't wait until the last moment. You're more likely to find cheap tickets from USM to LHR if you book early. Airlines often offer some amazing early bird deals.
Finding cheap flights from Samui International Airport to London Heathrow Airport is easier if you're flexible with your travel dates. Use the 'Whole month' function to see the lowest fares throughout the month and land a great deal.
There's no need to check every day to see if fares have gone down when you set up a Price Alert. We'll send you an update the moment there's a change in price on cheap flights from USM to LHR.
Choose your ideal departure and arrival times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to get the best deals on flights from Samui International Airport to London Heathrow Airport.

Handy information about Samui International Airport (USM)

Samui International Airport scores top marks for its on-time performance. 83% of flights that depart USM reach their destination on time.
Samui International Airport is around 11 kilometres from central Koh Samui. If you're driving, ride-sharing or catching a taxi from the centre, it'll take 20 minutes or so to get there, depending on the traffic.
Planning to catch public transport? Expect a trip time of around 30 minutes.
Looking for a convenient hotel near USM? If you're boarding an early flight from Samui International Airport to London Heathrow Airport, these stays will have you moments from check-in:

Arriving at London Heathrow Airport (LHR)

If you're landing on a late Samui International Airport to London Heathrow Airport flight, nothing tops the convenience of staying near the terminal. Collect your bags from the carousel and then be showered and sleeping shortly after at one of these options near LHR:
Pick up a London Heathrow Airport rental car and discover London and beyond with your own set of wheels. Surprice, U-Save and Green Motion are popular providers you can book with here.
To secure the lowest price, reserve your vehicle from London Heathrow Airport around one week in advance.

Getting from London Heathrow Airport (LHR) to central London

London Heathrow Airport is roughly 24 kilometres from central London. The drive time takes about 45 minutes.
If you're travelling by public transport, expect a journey of roughly 25 minutes.

When to fly to London Heathrow Airport (LHR)

The quietest month for a flight from Samui International Airport to London Heathrow Airport is March, while July is the most popular. Pick the best time to visit London based on whether you prefer a faster pace or a more relaxed vibe.
The warmest month in London is July, with temperatures ranging between 11ºC and 26ºC. Book your flights from Samui International Airport to London Heathrow Airport in this month if you enjoy this type of weather.
January has average temperatures of between 0ºC and 9ºC. Look for cheap tickets from USM to LHR sometime then if you'd rather travel in cooler conditions.

Explore more of the United Kingdom

London is always a good idea, but there are so many other corners of the United Kingdom waiting to be discovered. About 257 kilometres north-west of London, a visit to Manchester will keep your itinerary busy. Start with popular sights like Manchester United Museum & Stadium Tour, The Homes of Football and Museum of Science and Industry.
Birmingham is another favourite destination in the United Kingdom and is around 161 kilometres north-west of London. No journey is complete without visiting Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.