฿19,340 Cheap Flights from London (LHR) to Samui Intl. Airport (USM)

View ฿19,340 flight on Sun, 15 Mar 2026Opens 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 ฿19,340 for one-way flights and ฿28,685 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Mon, 8 Sep - Mon, 22 Sep
LHR
London
USM
Koh Samui
฿28,685 Return, found 2 days ago
฿28,685
Return
found 2 days ago
Select Swiss International Air Lines flight, departing Mon, 8 Sep from London to Koh Samui, returning Mon, 22 Sep, priced at ฿28,685 found 2 days ago
Swiss International Air Lines
Mon, 8 Sep - Mon, 22 Sep
LHR
London
USM
Koh Samui
฿28,780 Return, found 2 days ago
฿28,780
Return
found 2 days ago
Select Swiss International Air Lines flight, departing Mon, 8 Sep from London to Koh Samui, returning Mon, 22 Sep, priced at ฿28,780 found 2 days ago
Swiss International Air Lines
Mon, 8 Sep - Mon, 22 Sep
LHR
London
USM
Koh Samui
฿29,525 Return, found 2 days ago
฿29,525
Return
found 2 days ago
Select Swiss International Air Lines flight, departing Mon, 8 Sep from London to Koh Samui, returning Mon, 22 Sep, priced at ฿29,525 found 2 days ago
Austrian Airlines
Mon, 8 Sep - Mon, 22 Sep
LHR
London
USM
Koh Samui
฿30,030 Return, found 2 days ago
฿30,030
Return
found 2 days ago
Select Austrian Airlines flight, departing Mon, 8 Sep from London to Koh Samui, returning Mon, 22 Sep, priced at ฿30,030 found 2 days ago
Austrian Airlines
Mon, 8 Sep - Mon, 22 Sep
LHR
London
USM
Koh Samui
฿30,125 Return, found 2 days ago
฿30,125
Return
found 2 days ago
Select Austrian Airlines flight, departing Mon, 8 Sep from London to Koh Samui, returning Mon, 22 Sep, priced at ฿30,125 found 2 days ago
Austrian Airlines
Mon, 8 Sep - Mon, 22 Sep
LHR
London
USM
Koh Samui
฿30,875 Return, found 2 days ago
฿30,875
Return
found 2 days ago
Select Austrian Airlines flight, departing Mon, 8 Sep from London to Koh Samui, returning Mon, 22 Sep, priced at ฿30,875 found 2 days ago
Austrian Airlines
Mon, 1 Sep - Tue, 16 Sep
LHR
London
USM
Koh Samui
฿31,225 Return, found 6 days ago
฿31,225
Return
found 6 days ago
Select Austrian Airlines flight, departing Mon, 1 Sep from London to Koh Samui, returning Tue, 16 Sep, priced at ฿31,225 found 6 days ago
Air France
Mon, 8 Sep - Mon, 22 Sep
LHR
London
USM
Koh Samui
฿33,115 Return, found 2 days ago
฿33,115
Return
found 2 days ago
Select Air France flight, departing Mon, 8 Sep from London to Koh Samui, returning Mon, 22 Sep, priced at ฿33,115 found 2 days ago
Gulf Air
Mon, 8 Sep - Mon, 22 Sep
LHR
London
USM
Koh Samui
฿33,280 Return, found 2 days ago
฿33,280
Return
found 2 days ago
Select Gulf Air flight, departing Mon, 8 Sep from London to Koh Samui, returning Mon, 22 Sep, priced at ฿33,280 found 2 days ago
Etihad Airways
Wed, 3 Sep - Tue, 23 Sep
LHR
London
USM
Koh Samui
฿36,255 Return, found 9 hours ago
฿36,255
Return
found 9 hours ago
Select Etihad Airways flight, departing Wed, 3 Sep from London to Koh Samui, returning Tue, 23 Sep, priced at ฿36,255 found 9 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, KLM, Malaysia Airlines, Qatar Airways, Swiss International Air Lines, Thai Airways International, Turkish Airlines
Return price
฿28,685
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 ฿19,340 and roundtrip prices from ฿28,685. 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 ฿28,685. 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.

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