฿19,760 Cheap Flights from London (LHR) to Samui Intl. Airport (USM)

View ฿19,760 flight on Thu, 20 Nov 2025Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Samui Intl. Airport (USM)

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Cheap Flights from London (LHR) to Samui Intl. Airport (USM)

Prices were available within the past 7 days and start at ฿19,760 for one-way flights and ฿29,255 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Tue, 16 Sep - Mon, 17 Nov
LHR
London
USM
Koh Samui
฿29,255 Return, found 1 day ago
฿29,255
Return
found 1 day ago
Select Swiss International Air Lines flight, departing Tue, 16 Sep from London to Koh Samui, returning Mon, 17 Nov, priced at ฿29,255 found 1 day ago
Swiss International Air Lines
Tue, 16 Sep - Mon, 17 Nov
LHR
London
USM
Koh Samui
฿29,365 Return, found 1 day ago
฿29,365
Return
found 1 day ago
Select Swiss International Air Lines flight, departing Tue, 16 Sep from London to Koh Samui, returning Mon, 17 Nov, priced at ฿29,365 found 1 day ago
Austrian Airlines
Tue, 9 Sep - Mon, 17 Nov
LHR
London
USM
Koh Samui
฿29,535 Return, found 1 day ago
฿29,535
Return
found 1 day ago
Select Austrian Airlines flight, departing Tue, 9 Sep from London to Koh Samui, returning Mon, 17 Nov, priced at ฿29,535 found 1 day ago
Austrian Airlines
Tue, 9 Sep - Mon, 17 Nov
LHR
London
USM
Koh Samui
฿29,645 Return, found 1 day ago
฿29,645
Return
found 1 day ago
Select Austrian Airlines flight, departing Tue, 9 Sep from London to Koh Samui, returning Mon, 17 Nov, priced at ฿29,645 found 1 day ago
Swiss International Air Lines
Tue, 23 Sep - Tue, 30 Sep
LHR
London
USM
Koh Samui
฿29,805 Return, found 3 days ago
฿29,805
Return
found 3 days ago
Select Swiss International Air Lines flight, departing Tue, 23 Sep from London to Koh Samui, returning Tue, 30 Sep, priced at ฿29,805 found 3 days ago
Lufthansa
Tue, 16 Sep - Mon, 17 Nov
LHR
London
USM
Koh Samui
฿29,820 Return, found 1 day ago
฿29,820
Return
found 1 day ago
Select Lufthansa flight, departing Tue, 16 Sep from London to Koh Samui, returning Mon, 17 Nov, priced at ฿29,820 found 1 day ago
KLM
Tue, 9 Sep - Mon, 17 Nov
LHR
London
USM
Koh Samui
฿32,970 Return, found 1 day ago
฿32,970
Return
found 1 day ago
Select KLM flight, departing Tue, 9 Sep from London to Koh Samui, returning Mon, 17 Nov, priced at ฿32,970 found 1 day ago
Swiss International Air Lines
Tue, 24 Feb - Mon, 9 Mar
LHR
London
USM
Koh Samui
฿33,455 Return, found 17 hours ago
฿33,455
Return
found 17 hours ago
Select Swiss International Air Lines flight, departing Tue, 24 Feb from London to Koh Samui, returning Mon, 9 Mar, priced at ฿33,455 found 17 hours ago
Lufthansa
Thu, 11 Sep - Sun, 12 Oct
LHR
London
USM
Koh Samui
฿33,720 Return, found 18 hours ago
฿33,720
Return
found 18 hours ago
Select Lufthansa flight, departing Thu, 11 Sep from London to Koh Samui, returning Sun, 12 Oct, priced at ฿33,720 found 18 hours ago
Air France
Tue, 24 Feb - Mon, 9 Mar
LHR
London
USM
Koh Samui
฿34,150 Return, found 17 hours ago
฿34,150
Return
found 17 hours ago
Select Air France flight, departing Tue, 24 Feb from London to Koh Samui, returning Mon, 9 Mar, priced at ฿34,150 found 17 hours ago
Flight from London to Samui Intl. Airport route information
Origin airport
Heathrow
Destination airport
Samui Intl. Airport
Airlines serving
Air France, Austrian Airlines, British Airways, Cathay Pacific, EVA Airways, Etihad Airways, Finnair, Gulf Air, KLM, Lufthansa, Malaysia Airlines, Qatar Airways, Swiss International Air Lines, Thai Airways International, Turkish Airlines
Return price
฿29,255
Distance
9836 km

Perfect flights from London to Samui Intl. Airport

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from London to Samui Intl. Airport. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Heathrow to Samui Intl. Airport ticket options cater to your travel preferences, with incredible one-way fares from ฿19,760 and roundtrip prices from ฿29,255. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Samui Intl. Airport and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Samui Intl. Airport.

Frequently asked questions

How much is a flight from Heathrow Airport to USM?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip flight between London Heathrow and Samui Airport was ฿29,255. Cheap tickets don't hang around, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from LHR to Ko Samui Airport?
This differs from airline to airline, as each has its own set of terms and conditions. Head to the Customer Service Portal, where there are easy instructions on how to cancel online.
How do I find cheap flights from Heathrow Airport (LHR) to Ko Samui Airport (USM) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for London Heathrow to Ko Samui Airport (USM) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from London Heathrow to Ko Samui Airport (USM)?
The distance is around 9,900 kilometres, so fill your carry-on luggage with all you need to make the long journey comfortable. Wondering what to take on board your Hounslow to Koh Samui flight? Earplugs, a sleep mask and a neck pillow are a few essentials.
Which airlines fly direct from Heathrow Airport (LHR) to Ko Samui Airport?
There are no direct flights, so you'll have to make at least one stop between Heathrow Airport and Samui Airport. Make the most of the layover time to stretch your legs and grab a coffee.
Are LHR to Ko Samui Airport (USM) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from LHR to Ko Samui Airport (USM) at the last minute could be your ticket to an awesome deal. However, it could end up costing a great deal more! If you'd rather avoid the risk, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to a year in advance. If your preferred carrier hasn't released tickets yet, check back regularly as deals are updated all the time on Expedia.

Explore a world of travel with Expedia

London Airports

London

London City to Samui Intl. Airport
฿30,980.00
Gatwick to Samui Intl. Airport
฿32,040.00
*Available to Expedia members.