$738 Cheap Flights from Zagreb (ZAG) to Samui Intl. Airport (USM)

View $738 flight on Thu, Sep 18, 2025Opens in a new window

Popular airlines from Zagreb Airport (ZAG) to Samui Intl. Airport (USM)

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Cheap Flights from Zagreb to Samui Intl. Airport (ZAG-USM)

Prices were available within the past 7 days and start at $738 for one-way flights and $921 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Thu, Sep 18 - Sun, Sep 28
ZAG
Zagreb
USM
Koh Samui
$921 Roundtrip, found 2 hours ago
$921
Roundtrip
found 2 hours ago
Select Lufthansa flight, departing Thu, Sep 18 from Zagreb to Koh Samui, returning Sun, Sep 28, priced at $921 found 2 hours ago
Lufthansa
Thu, Sep 18 - Sun, Sep 28
ZAG
Zagreb
USM
Koh Samui
$936 Roundtrip, found 2 hours ago
$936
Roundtrip
found 2 hours ago
Select Lufthansa flight, departing Thu, Sep 18 from Zagreb to Koh Samui, returning Sun, Sep 28, priced at $936 found 2 hours ago
Austrian Airlines
Thu, Sep 18 - Sun, Sep 28
ZAG
Zagreb
USM
Koh Samui
$956 Roundtrip, found 2 hours ago
$956
Roundtrip
found 2 hours ago
Select Austrian Airlines flight, departing Thu, Sep 18 from Zagreb to Koh Samui, returning Sun, Sep 28, priced at $956 found 2 hours ago
KLM
Thu, Sep 18 - Sun, Sep 28
ZAG
Zagreb
USM
Koh Samui
$1,026 Roundtrip, found 2 hours ago
$1,026
Roundtrip
found 2 hours ago
Select KLM flight, departing Thu, Sep 18 from Zagreb to Koh Samui, returning Sun, Sep 28, priced at $1,026 found 2 hours ago
KLM
Thu, Sep 18 - Sun, Sep 28
ZAG
Zagreb
USM
Koh Samui
$1,026 Roundtrip, found 2 hours ago
$1,026
Roundtrip
found 2 hours ago
Select KLM flight, departing Thu, Sep 18 from Zagreb to Koh Samui, returning Sun, Sep 28, priced at $1,026 found 2 hours ago
Lufthansa
Thu, Sep 18 - Sun, Sep 28
ZAG
Zagreb
USM
Koh Samui
$1,029 Roundtrip, found 2 hours ago
$1,029
Roundtrip
found 2 hours ago
Select Lufthansa flight, departing Thu, Sep 18 from Zagreb to Koh Samui, returning Sun, Sep 28, priced at $1,029 found 2 hours ago
KLM
Thu, Sep 18 - Sun, Sep 28
ZAG
Zagreb
USM
Koh Samui
$1,031 Roundtrip, found 2 hours ago
$1,031
Roundtrip
found 2 hours ago
Select KLM flight, departing Thu, Sep 18 from Zagreb to Koh Samui, returning Sun, Sep 28, priced at $1,031 found 2 hours ago
Lufthansa
Thu, Sep 18 - Sun, Sep 28
ZAG
Zagreb
USM
Koh Samui
$1,039 Roundtrip, found 2 hours ago
$1,039
Roundtrip
found 2 hours ago
Select Lufthansa flight, departing Thu, Sep 18 from Zagreb to Koh Samui, returning Sun, Sep 28, priced at $1,039 found 2 hours ago
Air France
Thu, Sep 18 - Sun, Sep 28
ZAG
Zagreb
USM
Koh Samui
$1,056 Roundtrip, found 2 hours ago
$1,056
Roundtrip
found 2 hours ago
Select Air France flight, departing Thu, Sep 18 from Zagreb to Koh Samui, returning Sun, Sep 28, priced at $1,056 found 2 hours ago
Swiss International Air Lines
Sat, Nov 8 - Sat, Nov 15
ZAG
Zagreb
USM
Koh Samui
$1,081 Roundtrip, found 6 days ago
$1,081
Roundtrip
found 6 days ago
Select Swiss International Air Lines flight, departing Sat, Nov 8 from Zagreb to Koh Samui, returning Sat, Nov 15, priced at $1,081 found 6 days ago
Flights from Zagreb (ZAG) to Samui Intl. Airport (USM)
Origin airport
Zagreb
Destination airport
Samui Intl. Airport
Airlines serving
Air France, Austrian Airlines, KLM, Qatar Airways, Swiss International Air Lines, Turkish Airlines
Roundtrip price
$921
Distance
5458 mi

Zagreb to Samui Intl. Airport Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Zagreb 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 Zagreb 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 Zagreb to Samui Intl. Airport in 2025. You can also book with separate airlines for your outbound and return journeys, from $738 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 Zagreb 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 Zagreb 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.

 

Frequently asked questions

How much does a flight from Zagreb Airport (ZAG) to Ko Samui Airport (USM) cost?
Discover the latest flight deals from ZAG to USM by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ZAG to USM?
The cheapest flights from ZAG to USM are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ZAG to USM?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ZAG to USM. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Zagreb Airport (ZAG) to Ko Samui Airport (USM)?
Nonstop flights from Zagreb Airport (ZAG) 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 dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ZAG to USM?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* However, this can change depending on the time of year, airline 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 Zagreb Airport (ZAG) to Ko Samui Airport (USM)?
To avoid potential delays on the Zagreb Airport (ZAG) to Ko Samui Airport (USM) route, aim to fly before 3 PM. Later departures have a 22% higher chance of being 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 Zagreb Airport (ZAG) to Ko Samui Airport (USM) last-minute?
Booking your flight from ZAG to USM just before your getaway is usually more expensive. But if you're flexible with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book a ZAG to USM flight and hotel package?
Compared with arranging hotels and flights separately, booking a ZAG to USM flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one convenient place takes the hassle out of travel planning. Just secure your flights and select from our wide range of hotels, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Zagreb Airport (ZAG) to Ko Samui Airport (USM)?
It's usually possible to cancel or reschedule your ZAG to USM flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.