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Cheap flights from London to Samui International

Travellers and cabin class

Compare London to Samui International flight deals

Find the cheapest month or even day of the year to fly to Samui International

Book the best Samui International fare with no extra fees

Flight deals from London to Samui International

Looking for a cheap last-minute deal or the best return flight from London to Samui International? Find the lowest prices on one-way and return tickets right here.
Koh Samui.P42,040 per passenger.Departing Fri, 6 Jun, returning Mon, 16 Jun.Return flight with Ryanair and Bangkok Airways.Outbound indirect flight with Ryanair, departs from London Stansted on Fri, 6 Jun, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Mon, 16 Jun, arriving in London Heathrow.Price includes taxes and charges.From P42,040, select.
Koh Samui.P45,023 per passenger.Departing Sun, 4 May, returning Tue, 20 May.Return flight with Wizz Air UK and Bangkok Airways.Outbound indirect flight with Wizz Air UK, departs from London Gatwick on Sun, 4 May, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Tue, 20 May, arriving in London Heathrow.Price includes taxes and charges.From P45,023, select.
Koh Samui.P47,328 per passenger.Departing Fri, 30 May, returning Tue, 10 Jun.Return flight with Wizz Air UK and Bangkok Airways.Outbound indirect flight with Wizz Air UK, departs from London Gatwick on Fri, 30 May, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Tue, 10 Jun, arriving in London Heathrow.Price includes taxes and charges.From P47,328, select.
Koh Samui.P47,610 per passenger.Departing Sat, 26 Apr, returning Sat, 10 May.Return flight with Ryanair and Bangkok Airways.Outbound indirect flight with Ryanair, departs from London Stansted on Sat, 26 Apr, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Sat, 10 May, arriving in London Heathrow.Price includes taxes and charges.From P47,610, select.
Koh Samui.P47,959 per passenger.Departing Sat, 6 Sep, returning Sat, 20 Sep.Return flight with British Airways and Bangkok Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Sat, 6 Sep, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Sat, 20 Sep, arriving in London Heathrow.Price includes taxes and charges.From P47,959, select.
Koh Samui.P48,887 per passenger.Departing Tue, 1 Apr, returning Tue, 8 Apr.Return flight with Wizz Air UK and Bangkok Airways.Outbound indirect flight with Wizz Air UK, departs from London Gatwick on Tue, 1 Apr, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Tue, 8 Apr, arriving in London Heathrow.Price includes taxes and charges.From P48,887, select.
Koh Samui.P49,364 per passenger.Departing Wed, 26 Mar, returning Sun, 30 Mar.Return flight with Ryanair and Bangkok Airways.Outbound indirect flight with Ryanair, departs from London Stansted on Wed, 26 Mar, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Sun, 30 Mar, arriving in London Heathrow.Price includes taxes and charges.From P49,364, select.
Koh Samui.P49,488 per passenger.Departing Tue, 3 Feb, returning Sat, 14 Feb.Return flight with Norse Atlantic Airways (UK) and Bangkok Airways.Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Tue, 3 Feb, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Sat, 14 Feb, arriving in London Gatwick.Price includes taxes and charges.From P49,488, select.

Find the cheapest month to fly from London to Samui International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London to Samui International flights are currently cheapest in June.
Mar
from P49,364
Apr
from P48,887
May
from P45,023
Jun
from P42,040
Jul
from P70,453
Aug
from P74,382
Sep
from P47,959
Oct
from P56,588
Nov
from P54,285
Dec
from P63,686
Jan
from P61,244
Feb
from P49,488

London to Samui International: Alternative routes

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

London to Koh Samui: Flight information

The things to know before you go.
Cheapest flight foundP42,040
Cheapest month to flyJune

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

The best price we found for a return flight from London to Samui International is P42,040. 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 London to Samui International. But we found flights with one stop from P42,040.
As of March 2025, there are no flights flying from London to Samui International.
The cheapest month to fly from London to Samui International is usually March 2025.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from London to Samui International Airport on Friday, 6 June 2025.
No airlines currently offer direct flights between London and Samui International 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 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.
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.
The cheapest airline that flies to Samui International is Ryanair .

Travelling from London to Koh Samui Airport (USM): what you need to know

  • When organising your flight from London to Koh Samui Airport (USM), you'll have your choice of airports to leave from. Consider London Heathrow Airport (LHR) and London Gatwick Airport (LGW) for your departure options. Other possibilities include Stansted Airport (STN), London Luton Airport (LTN) and London City Airport (LCY).

  • Chaweng Beach is 7 hours ahead of London. Koh Samui Airport is located in Chaweng Beach, which operates on the UTC+7 timezone.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for hassle-free flying. Be at the airport with enough time to catch your flight from London to USM.

  • You'll want to head there even earlier during popular months like July. Aim for two hours before a domestic departure and up to four hours for international journeys. Once you've checked in, you can use any extra time to relax or grab something to eat.

Airports in London

London Heathrow Airport (LHR)

  • Stopovers are the perfect opportunity to take a break from travelling — and maybe even explore a different city. When browsing flights from London to USM leaving from London Heathrow Airport (LHR), deselect the 'Direct flights only' box to see where you can stop along the way. Here are some options to consider:

    • Changi International Airport (SIN)

    • Hong Kong International Airport (HKG)

    • Suvarnabhumi Airport (BKK)

  • From central London, LHR is around 31 kilometres away. Use navigation apps or check the official airport website to find the best way to get there.

  • Catching an early flight from London to Koh Samui Airport? Avoid the hassle of rushing to the terminal (and sneak in some extra precious sleep) by picking one of these stays near London Heathrow Airport:

London Gatwick Airport (LGW)

  • LGW is around 80 kilometres from central London. It takes 1 hour and 19 minutes or so to get to the airport in a car from the city centre. Public transport takes roughly 1 hour and 26 minutes.

  • You're off on holiday, so why not spend an extra night away from home? Consider kicking back in one of these accommodation options near London Gatwick Airport the day before your flight from London to USM:

About Koh Samui Airport (USM)

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

  • Koh Samui Airport is roughly 3 kilometres from central Chaweng Beach. The time it takes to get there in a cab or car rental will depend on the time of day. Do some research before you go.

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

  • P20,381 is the lowest price we've found for a one-way ticket from London to Koh Samui Airport. Return flights start from P42,040. Prices may vary depending on availability at the time of booking.

  • It's usually smart to book early if you want to find cheap tickets from London to USM. That's because flight prices are based on demand, which tends to rise closer to the departure date.

  • Finding cheap tickets from London to Koh Samui Airport is more likely if you're flexible with your trip dates. Try using the 'Whole month' search function to see the best prices across every month and land a great deal.

  • Create a Price Alert and keep track of changes on this route through email or push notifications. You'll be the first to know when prices drop. Timing matters when searching for cheap tickets from London to USM.

  • Make the most of the filters to find your ideal journey. To see the 'Cheapest,' 'Best' or 'Fastest' flights from London to Koh Samui Airport, use the 'Sort by' function. You can also filter by departure and arrival times, airline, and journey duration.

The best time to fly from London to Koh Samui Airport (USM)

  • August is the most popular month for flights from London to Koh Samui Airport. To escape the crowds, travel to Chaweng Beach in February when things are quieter.

More about Chaweng Beach

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Plan the rest of your trip from London to Koh Samui

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