Skyscanner

Cheap flights from London to Samui International

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 round-trip flight from London to Samui International? Find the lowest prices on one-way and round-trip tickets right here.
Koh Samui.$754 per passenger.Departing Mon, Nov 3, returning Mon, Nov 10.Round-trip flight with Ryanair and Bangkok Airways.Outbound indirect flight with Ryanair, departing from London Stansted on Mon, Nov 3, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departing from Samui International on Mon, Nov 10, arriving in London Gatwick.Price includes taxes and charges.From $754, select.
Koh Samui.$766 per passenger.Departing Mon, Sep 8, returning Mon, Sep 15.Round-trip flight with Wizz Air UK and Bangkok Airways.Outbound indirect flight with Wizz Air UK, departing from London Gatwick on Mon, Sep 8, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departing from Samui International on Mon, Sep 15, arriving in London Heathrow.Price includes taxes and charges.From $766, select.
Koh Samui.$785 per passenger.Departing Sat, Apr 25, returning Thu, May 7.Round-trip flight with easyJet and Scoot.Outbound indirect flight with easyJet, departing from London Gatwick on Sat, Apr 25, arriving in Samui International.Inbound indirect flight with Scoot, departing from Samui International on Thu, May 7, arriving in London Gatwick.Price includes taxes and charges.From $785, select.
Koh Samui.$788 per passenger.Departing Sun, Sep 7, returning Mon, Oct 27.Round-trip flight with Wizz Air UK and Bangkok Airways.Outbound indirect flight with Wizz Air UK, departing from London Gatwick on Sun, Sep 7, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departing from Samui International on Mon, Oct 27, arriving in London Gatwick.Price includes taxes and charges.From $788, select.
Koh Samui.$788 per passenger.Departing Sun, May 3, returning Tue, May 12.Round-trip flight with easyJet and Scoot.Outbound indirect flight with easyJet, departing from London Gatwick on Sun, May 3, arriving in Samui International.Inbound indirect flight with Scoot, departing from Samui International on Tue, May 12, arriving in London Gatwick.Price includes taxes and charges.From $788, select.
Koh Samui.$788 per passenger.Departing Wed, Oct 22, returning Wed, Oct 29.Round-trip flight with Wizz Air Malta and Bangkok Airways.Outbound indirect flight with Wizz Air Malta, departing from London Gatwick on Wed, Oct 22, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departing from Samui International on Wed, Oct 29, arriving in London Gatwick.Price includes taxes and charges.From $788, select.
Koh Samui.$807 per passenger.Departing Fri, Aug 29, returning Sat, Sep 13.Round-trip flight with Wizz Air Malta and Bangkok Airways.Outbound indirect flight with Wizz Air Malta, departing from London Gatwick on Fri, Aug 29, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departing from Samui International on Sat, Sep 13, arriving in London Heathrow.Price includes taxes and charges.From $807, select.
Koh Samui.$835 per passenger.Departing Tue, Oct 28, returning Mon, Nov 10.Round-trip flight with Norse Atlantic Airways (UK) and Bangkok Airways.Outbound indirect flight with Norse Atlantic Airways (UK), departing from London Gatwick on Tue, Oct 28, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departing from Samui International on Mon, Nov 10, arriving in London Gatwick.Price includes taxes and charges.From $835, 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 November.
Jun
from $921
Jul
from $965
Aug
from $1,035
Sep
from $766
Oct
from $788
Nov
from $754
Dec
from $895
Jan
from $861
Feb
from $894
Mar
from $849
Apr
from $912
May
from $788

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 found$754
Cheapest month to flyNovember

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

The best price we found for a round-trip flight from London to Samui International is $754. 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 $754.
There are no flights flying from London to Samui International, as of June 2025.
The cheapest month to fly from London to Samui International is usually June 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 Monday, November 3, 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.

Traveling from London to Koh Samui Airport (USM): What you need to know

  • London has plenty of airports to fly out of. Explore your departure options from London Heathrow Airport (LHR) and London Gatwick Airport (LGW) when planning your flight from London to Koh Samui Airport (USM). Stansted Airport (STN), London Luton Airport (LTN) and London City Airport (LCY) are the city's other main bases.

  • The timezone in Koh Samui is UTC+7, which is seven hours ahead of London. Koh Samui Airport is located in Koh Samui.

  • To ensure you get on your flight from London to USM, allow plenty of time for things like check-in and baggage drop. Turning up two hours before international departures and an hour before domestic flights is the standard rule.

  • Delays at check-in and security are more likely if you're heading away during high season, so give yourself a little extra breathing room. The recommendation for peak times? Arrive up to four hours early for international flights and at least two hours for domestic departures.

Airports in London

London Heathrow Airport (LHR)

  • We make it a piece of cake to find cheap flights from London to USM that include a stopover. To explore all the options departing from London Heathrow Airport (LHR), deselect 'Direct flights only.' Then, pick a flight with a stop long enough to tour your chosen city. Some popular stopovers between LHR and USM include:

    • Suvarnabhumi Airport (BKK)

    • Changi International Airport (SIN)

    • Hong Kong International Airport (HKG)

  • Located around 31 kilometers from the center of London, LHR can be reached in about 55 minutes by car, depending on traffic. The journey by public transport will take roughly 1 hour.

  • Looking for a convenient hotel near London Heathrow Airport? If you're catching an early flight from London to Koh Samui Airport, these stays will put you conveniently close to check-in:

  • Of all flights departing from London Heathrow Airport, 68.18% arrive as scheduled at their destination.

London Gatwick Airport (LGW)

  • Maximize your vacation with a stopover on your flight from London to Koh Samui Airport. Suvarnabhumi Airport (BKK) is one of the main options between London Gatwick Airport and USM.

  • With public transport, you can travel from central London to LGW in about 30 minutes. The terminal is roughly 80 kilometers away, and getting there by car takes approximately 1 hour 20 minutes.

  • Got an early start? You might like to check in to one of these hotels near London Gatwick Airport the day before your London to USM flight:

  • 69.26% of flights departing London Gatwick Airport stick to their scheduled arrival time.

Stansted Airport (STN)

  • From the center of London, STN is around 64 kilometers away. It takes roughly 1 hour to reach the airport by car and 1 hour 25 minutes or so if you take public transport.

  • Skip the morning rush on departure day — stay near Stansted Airport and know you'll get to your gate with time to spare. Get settled at one of these hotels the day before if you've booked an early London to Koh Samui Airport flight:

  • Airports have an on-time performance rating that measures how often flights arrive at their destinations without delays. At STN, that figure is 64.73%.

About Koh Samui Airport (USM)

  • If you're coming in on a late flight from London to Koh Samui Airport, nothing beats the convenience of staying near the terminal. Grab your luggage from the carousel and then be showered and sleeping soon after at one of these options near USM:

  • Fast-track your adventure by picking up a Koh Samui Airport rental car. Grab your wheels from asap car rental, Hertz or Drive Car Rental and experience the lesser-explored corners of Koh Samui and beyond.

  • To get the best deal, reserve your vehicle around four weeks in advance of your London to Koh Samui Airport flight.

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

  • $323 is currently the best price for a one-way ticket from London to Koh Samui Airport. A return flight starts from $754. These fares can change depending on demand.

  • Booking in advance is often the key to scoring a cheap flight from London to USM. Prices tend to rise as demand increases, so the closer your departure date, the more you'll likely pay.

  • Affordable London to Koh Samui Airport tickets are easier to find when you have flexibility in your schedule. Try using the 'Whole month' tool to compare fares throughout the month and then choose the cheapest day.

  • Finding a cheap plane ticket from London to USM couldn't be easier with Price Alerts. Simply set up one of these automatic alerts and we'll get in touch when there's a price drop.

  • Filters make it easier to dig up a deal for your flight from London to Koh Samui Airport. Choose the airlines, flight times and number of stops that line up with your plans. Then sort the results by 'Cheapest' to zero in on the cheapest fare fast.

Explore more of Thailand

  • Nakhon Si Thammarat is just one of the many cities in Thailand waiting to be explored once you've seen Koh Samui. Around 129 kilometers away to the south, check out popular attractions including Wat Phra Phrom, Wat Pho Sadet and Wat Yai Chai Mongkol.

  • Phuket is another well-known destination in Thailand and is around 257 kilometers south-west of Koh Samui. No trip is complete without dropping by V.MarineTour- Phi Phi Islands Day Trip - Private Boat Charters, Sunrise Beach and Paradise Beach.

More travel options

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.