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Cheap flight tickets 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

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Flight deals from Samui International to London Heathrow

Looking for a cheap last-minute deal or the best return flight from Samui International to London Heathrow? Find the lowest prices on one-way and return tickets right here.
London.RM4,137 per passenger.Departing Wed, 21 May, returning Wed, 20 Aug.Return flight with Bangkok Airways and Hainan Airlines.Outbound indirect flight with Bangkok Airways, departs from Samui International on Wed, 21 May, arriving in London Heathrow.Inbound indirect flight with Hainan Airlines, departs from London Heathrow on Wed, 20 Aug, arriving in Samui International.Price includes taxes and charges.From RM4,137, select.
London.RM5,109 per passenger.Departing Mon, 9 Jun, returning Fri, 13 Jun.Return flight with Gulf Air.Outbound indirect flight with Gulf Air, departs from Samui International on Mon, 9 Jun, arriving in London Heathrow.Inbound indirect flight with Gulf Air, departs from London Heathrow on Fri, 13 Jun, arriving in Samui International.Price includes taxes and charges.From RM5,109, select.
London.RM5,122 per passenger.Departing Sun, 18 May, returning Sun, 1 Jun.Return flight with Gulf Air.Outbound indirect flight with Gulf Air, departs from Samui International on Sun, 18 May, arriving in London Heathrow.Inbound indirect flight with Gulf Air, departs from London Heathrow on Sun, 1 Jun, arriving in Samui International.Price includes taxes and charges.From RM5,122, select.
London.RM5,166 per passenger.Departing Sun, 11 May, returning Sun, 25 May.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Samui International on Sun, 11 May, arriving in London Heathrow.Inbound indirect flight with Cathay Pacific, departs from London Heathrow on Sun, 25 May, arriving in Samui International.Price includes taxes and charges.From RM5,166, select.
London.RM5,223 per passenger.Departing Wed, 11 Jun, returning Tue, 1 Jul.Return flight with Bangkok Airways and EVA Air.Outbound indirect flight with Bangkok Airways, departs from Samui International on Wed, 11 Jun, arriving in London Heathrow.Inbound indirect flight with EVA Air, departs from London Heathrow on Tue, 1 Jul, arriving in Samui International.Price includes taxes and charges.From RM5,223, select.
London.RM5,223 per passenger.Departing Wed, 1 Oct, returning Tue, 7 Oct.Return flight with Bangkok Airways and EVA Air.Outbound indirect flight with Bangkok Airways, departs from Samui International on Wed, 1 Oct, arriving in London Heathrow.Inbound indirect flight with EVA Air, departs from London Heathrow on Tue, 7 Oct, arriving in Samui International.Price includes taxes and charges.From RM5,223, select.
London.RM5,224 per passenger.Departing Mon, 22 Dec, returning Mon, 5 Jan.Return flight with Bangkok Airways and EVA Air.Outbound indirect flight with Bangkok Airways, departs from Samui International on Mon, 22 Dec, arriving in London Heathrow.Inbound indirect flight with EVA Air, departs from London Heathrow on Mon, 5 Jan, arriving in Samui International.Price includes taxes and charges.From RM5,224, select.
London.RM5,225 per passenger.Departing Fri, 19 Sep, returning Sun, 21 Sep.Return flight with Bangkok Airways and EVA Air.Outbound indirect flight with Bangkok Airways, departs from Samui International on Fri, 19 Sep, arriving in London Heathrow.Inbound indirect flight with EVA Air, departs from London Heathrow on Sun, 21 Sep, arriving in Samui International.Price includes taxes and charges.From RM5,225, 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 June.
Apr
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May
from RM5,166
Jun
from RM5,109
Jul
from RM7,292
Aug
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Sep
from RM5,225
Oct
from RM5,223
Nov
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Dec
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Jan
from RM8,051
Feb
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Mar
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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 foundRM4,137
Cheapest month to flyMay

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

The best price we found for a return flight from Samui International to London Heathrow is RM4,137. 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.
Currently, there are no airlines that fly direct from Samui International to London Heathrow. But we found flights with one or more stops from RM4,137.
As of April 2025, there are no flights flying from Samui International to London Heathrow.
The cheapest month to fly from Samui International to London Heathrow is usually April 2025.
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 Wednesday, 21 May 2025.
No airlines currently offer direct flights between Samui International Airport and London Heathrow Airport. Most routes have one or more stops.
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.
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.
Currently, Bangkok Airways offers the cheapest flight tickets to London Heathrow.

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

  • London is seven hours behind Koh Samui and observes the UTC+0 timezone.

  • To ensure you catch your USM to LHR flight, allow plenty of time to check in and drop off your luggage. Turning up two hours before international departures and one hour before domestic flights is the general travel rule.

  • You'll likely experience longer lines during popular months such as July. Arriving up to four hours in advance for international flights and two hours for a domestic departure will give you ample time for security and boarding.

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

  • RM1,461 is the lowest price for a one-way Koh Samui Airport to London Heathrow Airport flight. A return flight starts from RM4,137. These prices may change depending on demand and availability.

  • Don't leave things to the last moment. You're more likely to find cheap tickets from USM to LHR if you book ahead. Airlines often have some terrific early bird deals.

  • The 'Whole month' tool shows you the cheapest flights from Koh Samui Airport to London Heathrow Airport across every month. It's an easy way to snap up a bargain if your dates are flexible.

  • Cut down on the time spent looking for cheap flights from USM to LHR by creating a Price Alert. You'll get an email or notification on the app when a lower fare becomes available.

  • Lock in the right flight for you with the help of the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Koh Samui Airport to London Heathrow Airport, use the 'Sort by' function. You can also filter results by departure and arrival times, airline, and journey duration.

Handy information about Koh Samui Airport (USM)

  • 69.38% of flights departing from Koh Samui Airport touch down at their destination on schedule.

  • Koh Samui Airport is about 3 kilometres from central Koh Samui. To help you work out how to get there, use Google Maps. This essential traveller tool will show you the best route and public transport alternatives.

  • Looking for a convenient hotel near USM? If you've booked an early flight from Koh Samui Airport to London Heathrow Airport, these accommodation options will have you moments from your check-in counter:

Arriving at London Heathrow Airport (LHR)

Getting from London Heathrow Airport (LHR) to central London

  • From London Heathrow Airport, London is approximately 31 kilometres away. It takes around 55 minutes to reach the centre driving.

  • If you're using public transport, expect a journey of around 1 hour.

When to fly to London Heathrow Airport (LHR)

  • July is the most popular month for flights from Koh Samui Airport to London Heathrow Airport. To steer clear of the crowds, go to London in February.

  • When booking your flight from Koh Samui Airport to London Heathrow Airport, think about the type of weather you enjoy. July is the warmest month in London, with temperatures ranging from 11ºC (52ºF) to 26ºC (79ºF).

  • For cooler conditions, search for a cheap ticket from USM to LHR in January. Temperatures average between 0ºC (32ºF) and 9ºC (48ºF) then.

Explore more of United Kingdom

  • Birmingham is just one of the many places in United Kingdom waiting to be discovered once you've taken in the sights of London. Around 161 kilometres away to the north-west, top sights here include Cadbury World, The Library of Birmingham and National Sea Life Centre.

  • Bristol is another well-known destination in United Kingdom and is around 177 kilometres west of London. No journey is complete without visiting Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park.

Plan the rest of your trip from Koh Samui to London

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.