Cheap Flights from London (LHR) to Samui Intl. Airport (USM) from HK$4,191~

View HK$4,191 flight on Wed, 18 Mar 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at HK$4,191 for one-way flights and HK$8,056 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Austrian Airlines
Sun, 8 Feb - Tue, 17 Feb
LHR
London
USM
Koh Samui
HK$8,056 Return, found 6 days ago
HK$8,056
Return
found 6 days ago
Select Austrian Airlines flight, departing Sun, 8 Feb from London to Koh Samui, returning Tue, 17 Feb, priced at HK$8,056 found 6 days ago
Etihad Airways
Sat, 21 Feb - Sun, 8 Mar
LHR
London
USM
Koh Samui
HK$8,518 Return, found 1 day ago
HK$8,518
Return
found 1 day ago
Select Etihad Airways flight, departing Sat, 21 Feb from London to Koh Samui, returning Sun, 8 Mar, priced at HK$8,518 found 1 day ago
Etihad Airways
Sun, 5 Jul - Wed, 15 Jul
LHR
London
USM
Koh Samui
HK$8,699 Return, found 3 hours ago
HK$8,699
Return
found 3 hours ago
Select Etihad Airways flight, departing Sun, 5 Jul from London to Koh Samui, returning Wed, 15 Jul, priced at HK$8,699 found 3 hours ago
Lufthansa
Wed, 18 Mar - Thu, 16 Apr
LHR
London
USM
Koh Samui
HK$8,763 Return, found 21 hours ago
HK$8,763
Return
found 21 hours ago
Select Lufthansa flight, departing Wed, 18 Mar from London to Koh Samui, returning Thu, 16 Apr, priced at HK$8,763 found 21 hours ago
Austrian Airlines
Wed, 18 Mar - Thu, 16 Apr
LHR
London
USM
Koh Samui
HK$8,770 Return, found 21 hours ago
HK$8,770
Return
found 21 hours ago
Select Austrian Airlines flight, departing Wed, 18 Mar from London to Koh Samui, returning Thu, 16 Apr, priced at HK$8,770 found 21 hours ago
Austrian Airlines
Sun, 8 Feb - Tue, 17 Feb
LHR
London
USM
Koh Samui
HK$8,798 Return, found 6 days ago
HK$8,798
Return
found 6 days ago
Select Austrian Airlines flight, departing Sun, 8 Feb from London to Koh Samui, returning Tue, 17 Feb, priced at HK$8,798 found 6 days ago
Etihad Airways
Sat, 21 Feb - Sun, 8 Mar
LHR
London
USM
Koh Samui
HK$8,818 Return, found 1 day ago
HK$8,818
Return
found 1 day ago
Select Etihad Airways flight, departing Sat, 21 Feb from London to Koh Samui, returning Sun, 8 Mar, priced at HK$8,818 found 1 day ago
Austrian Airlines
Sun, 8 Feb - Tue, 17 Feb
LHR
London
USM
Koh Samui
HK$8,822 Return, found 6 days ago
HK$8,822
Return
found 6 days ago
Select Austrian Airlines flight, departing Sun, 8 Feb from London to Koh Samui, returning Tue, 17 Feb, priced at HK$8,822 found 6 days ago
Swiss International Air Lines
Sat, 6 Dec - Sat, 20 Dec
LHR
London
USM
Koh Samui
HK$8,910 Return, found 6 days ago
HK$8,910
Return
found 6 days ago
Select Swiss International Air Lines flight, departing Sat, 6 Dec from London to Koh Samui, returning Sat, 20 Dec, priced at HK$8,910 found 6 days ago
Singapore Airlines
Sat, 21 Feb - Sun, 8 Mar
LHR
London
USM
Koh Samui
HK$9,022 Return, found 1 day ago
HK$9,022
Return
found 1 day ago
Select Singapore Airlines flight, departing Sat, 21 Feb from London to Koh Samui, returning Sun, 8 Mar, priced at HK$9,022 found 1 day ago
London to Samui Intl. Airport route information
Origin airport
Heathrow
Destination airport
Samui Intl. Airport
Airlines serving
Air France, Austrian Airlines, British Airways, EVA Airways, Etihad Airways, Lufthansa, Qatar Airways, Singapore Airlines, Swiss International Air Lines, Thai Airways International, Turkish Airlines
Return price
HK$8,056
Distance
9836 km

Flights from London to Koh Samui

Book cheap flights from London (LHR) to Koh Samui (USM) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from London (LHR) to Koh Samui (USM) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your London (LHR) to Koh Samui (USM) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your Koh Samui flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in Koh Samui and things to do in Koh Samui for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to Koh Samui more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Koh Samui is HK$4,191 now!

 

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 HK$8,056. 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 kilometers, 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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