$740 Cheap Flights from Lisbon (LIS) to Samui Intl. Airport (USM)

View $740 flight on Wed, Nov 5, 2025Opens in a new window

Popular airlines from Humberto Delgado Airport (LIS) to Samui Intl. Airport (USM)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Lisbon to Samui Intl. Airport (LIS-USM)

Prices were available within the past 7 days and start at $740 for one-way flights and $1,333 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Mon, Jan 5 - Mon, Jan 19
LIS
Lisbon
USM
Koh Samui
$1,333 Roundtrip, found 3 days ago
$1,333
Roundtrip
found 3 days ago
Select Etihad Airways flight, departing Mon, Jan 5 from Lisbon to Koh Samui, returning Mon, Jan 19, priced at $1,333 found 3 days ago
Etihad Airways
Mon, Jan 5 - Mon, Jan 19
LIS
Lisbon
USM
Koh Samui
$1,375 Roundtrip, found 3 days ago
$1,375
Roundtrip
found 3 days ago
Select Etihad Airways flight, departing Mon, Jan 5 from Lisbon to Koh Samui, returning Mon, Jan 19, priced at $1,375 found 3 days ago
Etihad Airways
Mon, Jan 5 - Mon, Jan 19
LIS
Lisbon
USM
Koh Samui
$1,383 Roundtrip, found 3 days ago
$1,383
Roundtrip
found 3 days ago
Select Etihad Airways flight, departing Mon, Jan 5 from Lisbon to Koh Samui, returning Mon, Jan 19, priced at $1,383 found 3 days ago
Qatar Airways
Tue, Dec 16 - Wed, Feb 4
LIS
Lisbon
USM
Koh Samui
$1,394 Roundtrip, found 1 day ago
$1,394
Roundtrip
found 1 day ago
Select Qatar Airways flight, departing Tue, Dec 16 from Lisbon to Koh Samui, returning Wed, Feb 4, priced at $1,394 found 1 day ago
Qatar Airways
Mon, Jan 5 - Mon, Jan 19
LIS
Lisbon
USM
Koh Samui
$1,407 Roundtrip, found 3 days ago
$1,407
Roundtrip
found 3 days ago
Select Qatar Airways flight, departing Mon, Jan 5 from Lisbon to Koh Samui, returning Mon, Jan 19, priced at $1,407 found 3 days ago
Qatar Airways
Mon, Jan 5 - Mon, Jan 19
LIS
Lisbon
USM
Koh Samui
$1,408 Roundtrip, found 3 days ago
$1,408
Roundtrip
found 3 days ago
Select Qatar Airways flight, departing Mon, Jan 5 from Lisbon to Koh Samui, returning Mon, Jan 19, priced at $1,408 found 3 days ago
Qatar Airways
Tue, Dec 16 - Wed, Feb 4
LIS
Lisbon
USM
Koh Samui
$1,465 Roundtrip, found 1 day ago
$1,465
Roundtrip
found 1 day ago
Select Qatar Airways flight, departing Tue, Dec 16 from Lisbon to Koh Samui, returning Wed, Feb 4, priced at $1,465 found 1 day ago
British Airways
Mon, Jan 5 - Mon, Jan 19
LIS
Lisbon
USM
Koh Samui
$1,472 Roundtrip, found 3 days ago
$1,472
Roundtrip
found 3 days ago
Select British Airways flight, departing Mon, Jan 5 from Lisbon to Koh Samui, returning Mon, Jan 19, priced at $1,472 found 3 days ago
Lufthansa
Tue, Dec 16 - Wed, Feb 4
LIS
Lisbon
USM
Koh Samui
$1,577 Roundtrip, found 1 day ago
$1,577
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Tue, Dec 16 from Lisbon to Koh Samui, returning Wed, Feb 4, priced at $1,577 found 1 day ago
Swiss International Air Lines
Tue, Dec 16 - Wed, Feb 4
LIS
Lisbon
USM
Koh Samui
$1,609 Roundtrip, found 1 day ago
$1,609
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Tue, Dec 16 from Lisbon to Koh Samui, returning Wed, Feb 4, priced at $1,609 found 1 day ago

Frequently asked questions

How much does a flight from Humberto Delgado Airport (LIS) to Ko Samui Airport (USM) cost?
Get a cheap one-way flight from $740 or cheap return flight from $1,333 from Humberto Delgado Airport (LIS) to Ko Samui Airport (USM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Humberto Delgado Airport (LIS) to Ko Samui Airport (USM)?
The cheapest month to fly from LIS to USM is January, when there's less demand. Off-peak months are usually when airlines offer better prices between these airports.
What is the cheapest airline that flies from Humberto Delgado Airport (LIS) to Ko Samui Airport (USM)?
To find the cheapest airline that'll fly you from LIS to USM, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Humberto Delgado Airport (LIS) to Ko Samui Airport (USM)?
You'll have to hop on a flight with a layover if you're traveling from Humberto Delgado Airport (LIS) to Ko Samui Airport (USM). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from LIS to USM?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Humberto Delgado Airport (LIS) to Ko Samui Airport (USM)?
To arrive at Ko Samui Airport (USM) on schedule, select a flight that leaves Humberto Delgado Airport (LIS) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Humberto Delgado Airport (LIS) to Ko Samui Airport (USM) last-minute?
Booking your flight from LIS to USM right before your getaway is generally more expensive. But if you're flexible with your itinerary, you could score a cheap last-minute fare.
Is it cheaper to book a LIS to USM flight and hotel package?
Opting for a LIS to USM flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Pick from our wide range of accommodations and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Humberto Delgado Airport (LIS) to Ko Samui Airport (USM)?
If you booked your LIS to USM flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

Travel information

Travel information

Origin airport
Humberto Delgado
Destination airport
Samui Intl. Airport
Airlines serving
British Airways, Etihad Airways, Lufthansa, Qatar Airways, Swiss International Air Lines
Roundtrip price
$1,332
Distance
6809 mi

Book with confidence

Book with confidence

Lisbon to Samui Intl. Airport Flights

The cheapest times to fly from Lisbon 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 Lisbon to Samui Intl. Airport are during the month of January. You can find some of the cheapest flights from Lisbon to Samui Intl. Airport with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Lisbon 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 Lisbon 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 Lisbon to Samui Intl. Airport in 2025. You can also book with separate airlines for your outbound and return journeys, from $740 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 Lisbon 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 Lisbon 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.

 

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