Cheap Flights from London (LHR) to Samui Intl. Airport (USM) from HK$4,735~

View HK$4,735 flight on Mon, 2 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$4,735 for one-way flights and HK$8,042 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Singapore Airlines
Mon, 2 Mar - Tue, 12 May
LHR
London
USM
Koh Samui
HK$8,042 Return, found 3 days ago
HK$8,042
Return
found 3 days ago
Select Singapore Airlines flight, departing Mon, 2 Mar from London to Koh Samui, returning Tue, 12 May, priced at HK$8,042 found 3 days ago
Singapore Airlines
Mon, 2 Mar - Tue, 12 May
LHR
London
USM
Koh Samui
HK$8,332 Return, found 3 days ago
HK$8,332
Return
found 3 days ago
Select Singapore Airlines flight, departing Mon, 2 Mar from London to Koh Samui, returning Tue, 12 May, priced at HK$8,332 found 3 days ago
Singapore Airlines
Mon, 2 Mar - Tue, 12 May
LHR
London
USM
Koh Samui
HK$8,702 Return, found 3 days ago
HK$8,702
Return
found 3 days ago
Select Singapore Airlines flight, departing Mon, 2 Mar from London to Koh Samui, returning Tue, 12 May, priced at HK$8,702 found 3 days ago
Singapore Airlines
Mon, 2 Mar - Tue, 12 May
LHR
London
USM
Koh Samui
HK$8,992 Return, found 3 days ago
HK$8,992
Return
found 3 days ago
Select Singapore Airlines flight, departing Mon, 2 Mar from London to Koh Samui, returning Tue, 12 May, priced at HK$8,992 found 3 days ago
Singapore Airlines
Fri, 20 Feb - Fri, 6 Mar
LHR
London
USM
Koh Samui
HK$8,994 Return, found 3 days ago
HK$8,994
Return
found 3 days ago
Select Singapore Airlines flight, departing Fri, 20 Feb from London to Koh Samui, returning Fri, 6 Mar, priced at HK$8,994 found 3 days ago
Austrian Airlines
Mon, 2 Mar - Tue, 12 May
LHR
London
USM
Koh Samui
HK$9,116 Return, found 3 days ago
HK$9,116
Return
found 3 days ago
Select Austrian Airlines flight, departing Mon, 2 Mar from London to Koh Samui, returning Tue, 12 May, priced at HK$9,116 found 3 days ago
Swiss International Air Lines
Mon, 2 Mar - Tue, 12 May
LHR
London
USM
Koh Samui
HK$9,131 Return, found 3 days ago
HK$9,131
Return
found 3 days ago
Select Swiss International Air Lines flight, departing Mon, 2 Mar from London to Koh Samui, returning Tue, 12 May, priced at HK$9,131 found 3 days ago
Lufthansa
Thu, 11 Dec - Tue, 16 Dec
LHR
London
USM
Koh Samui
HK$9,145 Return, found 2 days ago
HK$9,145
Return
found 2 days ago
Select Lufthansa flight, departing Thu, 11 Dec from London to Koh Samui, returning Tue, 16 Dec, priced at HK$9,145 found 2 days ago
Lufthansa
Thu, 11 Dec - Tue, 16 Dec
LHR
London
USM
Koh Samui
HK$9,162 Return, found 2 days ago
HK$9,162
Return
found 2 days ago
Select Lufthansa flight, departing Thu, 11 Dec from London to Koh Samui, returning Tue, 16 Dec, priced at HK$9,162 found 2 days ago
Gulf Air
Thu, 11 Dec - Tue, 16 Dec
LHR
London
USM
Koh Samui
HK$9,418 Return, found 2 days ago
HK$9,418
Return
found 2 days ago
Select Gulf Air flight, departing Thu, 11 Dec from London to Koh Samui, returning Tue, 16 Dec, priced at HK$9,418 found 2 days ago
London to Samui Intl. Airport route information
Origin airport
Heathrow
Destination airport
Samui Intl. Airport
Return price
HK$8,042
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$4,735 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$8,042. 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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