$708 Cheap Flights from London (STN) to Samui Intl. Airport (USM)

View $708 flight on Thu, May 21, 2026Opens in a new window

Popular airlines from Stansted Airport (STN) to Samui Intl. Airport (USM)

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

Prices were available within the past 7 days and start at $708 for one-way flights and $1,445 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Emirates
Sat, Jul 4 - Sat, Jul 18
STN
London
USM
Koh Samui
$1,445 Roundtrip, found 4 days ago
$1,445
Roundtrip
found 4 days ago
Select Emirates flight, departing Sat, Jul 4 from London to Koh Samui, returning Sat, Jul 18, priced at $1,445 found 4 days ago
Emirates
Sat, Jul 4 - Sat, Jul 18
STN
London
USM
Koh Samui
$1,488 Roundtrip, found 4 days ago
$1,488
Roundtrip
found 4 days ago
Select Emirates flight, departing Sat, Jul 4 from London to Koh Samui, returning Sat, Jul 18, priced at $1,488 found 4 days ago
Emirates
Sun, Apr 5 - Sun, Apr 19
STN
London
USM
Koh Samui
$1,573 Roundtrip, found 2 days ago
$1,573
Roundtrip
found 2 days ago
Select Emirates flight, departing Sun, Apr 5 from London to Koh Samui, returning Sun, Apr 19, priced at $1,573 found 2 days ago
Emirates
Sat, Nov 15 - Sat, Nov 22
STN
London
USM
Koh Samui
$1,644 Roundtrip, found 6 days ago
$1,644
Roundtrip
found 6 days ago
Select Emirates flight, departing Sat, Nov 15 from London to Koh Samui, returning Sat, Nov 22, priced at $1,644 found 6 days ago
Emirates
Thu, Aug 6 - Sat, Aug 22
STN
London
USM
Koh Samui
$1,772 Roundtrip, found 1 day ago
$1,772
Roundtrip
found 1 day ago
Select Emirates flight, departing Thu, Aug 6 from London to Koh Samui, returning Sat, Aug 22, priced at $1,772 found 1 day ago
Emirates
Sat, Nov 15 - Sat, Nov 22
STN
London
USM
Koh Samui
$1,792 Roundtrip, found 6 days ago
$1,792
Roundtrip
found 6 days ago
Select Emirates flight, departing Sat, Nov 15 from London to Koh Samui, returning Sat, Nov 22, priced at $1,792 found 6 days ago
Emirates
Sun, Apr 5 - Sun, Apr 19
STN
London
USM
Koh Samui
$1,809 Roundtrip, found 2 days ago
$1,809
Roundtrip
found 2 days ago
Select Emirates flight, departing Sun, Apr 5 from London to Koh Samui, returning Sun, Apr 19, priced at $1,809 found 2 days ago
Emirates
Sun, Dec 14 - Mon, Dec 22
STN
London
USM
Koh Samui
$2,010 Roundtrip, found 1 day ago
$2,010
Roundtrip
found 1 day ago
Select Emirates flight, departing Sun, Dec 14 from London to Koh Samui, returning Mon, Dec 22, priced at $2,010 found 1 day ago
Emirates
Wed, Jul 22 - Fri, Jul 31
STN
London
USM
Koh Samui
$2,024 Roundtrip, found 1 day ago
$2,024
Roundtrip
found 1 day ago
Select Emirates flight, departing Wed, Jul 22 from London to Koh Samui, returning Fri, Jul 31, priced at $2,024 found 1 day ago
Emirates
Wed, Jul 22 - Fri, Jul 31
STN
London
USM
Koh Samui
$2,025 Roundtrip, found 1 day ago
$2,025
Roundtrip
found 1 day ago
Select Emirates flight, departing Wed, Jul 22 from London to Koh Samui, returning Fri, Jul 31, priced at $2,025 found 1 day ago

Frequently asked questions

How much does a flight from Stansted Airport (STN) to Ko Samui Airport (USM) cost?
Get a cheap one-way flight from $708 or cheap return flight from $1,445 from Stansted Airport (STN) to Ko Samui Airport (USM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Stansted Airport (STN) to Ko Samui Airport (USM)?
July is the cheapest month to fly from STN to USM. Avoiding peak travel times is often the key to finding better deals on flights.
What is the cheapest airline that flies from Stansted Airport (STN) to Ko Samui Airport (USM)?
To find the cheapest airline flying from STN to USM, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Stansted Airport (STN) to Ko Samui Airport (USM)?
Nonstop flights from Stansted Airport (STN) to Ko Samui Airport (USM) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STN to USM?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary based on a number of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Stansted Airport (STN) to Ko Samui Airport (USM)?
To avoid potential delays on the Stansted Airport (STN) to Ko Samui Airport (USM) route, aim to fly before 3 PM. Flights after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Stansted Airport (STN) to Ko Samui Airport (USM) last-minute?
Booking your ticket from STN to USM shortly before your getaway is typically more expensive. But if you're flexible with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book a STN to USM flight and hotel package?
You'll generally save money by securing a STN to USM flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've chosen your ideal flights and accommodations, you can add extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Stansted Airport (STN) to Ko Samui Airport (USM)?
Typically, you can modify or cancel your STN to USM flight. However, there may be additional charges, especially if you booked over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you'd like more information, go to our Customer Service portal.

Travel information

Travel information

Origin airport
Stansted
Destination airport
Samui Intl. Airport
Airlines serving
Emirates
Roundtrip price
$1,444
Distance
6111 mi

Book with confidence

Book with confidence

London to Samui Intl. Airport Flights

The cheapest times to fly from London to Samui Intl. Airport

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from London to Samui Intl. Airport are during the month of July. You can find some of the cheapest flights from London to Samui Intl. Airport with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from London to Samui Intl. Airport

Sunday is one of the best days to book for cheap flights from London to Samui Intl. Airport: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from London to Samui Intl. Airport

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from London to Samui Intl. Airport in 2025. You can also book with separate airlines for your outbound and return journeys, from $708 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap London to Samui Intl. Airport flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your London to Samui Intl. Airport airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

London to Samui Intl. Airport Flights
*Available to One Key members.