$714 Cheap Flights from Sofia (SOF) to Samui Intl. Airport (USM)

View $714 flight on Mon, Jan 26, 2026Opens in a new window

Popular airlines from Sofia Airport (SOF) to Samui Intl. Airport (USM)

Cheap Flights from Sofia to Samui Intl. Airport (SOF-USM)

Prices were available within the past 7 days and start at $714 for one-way flights and $1,157 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Mon, Jan 26 - Mon, Feb 9
SOF
Sofia
USM
Koh Samui
$1,157 Roundtrip, found 5 days ago
$1,157
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Mon, Jan 26 from Sofia to Koh Samui, returning Mon, Feb 9, priced at $1,157 found 5 days ago
Lufthansa
Mon, Jan 26 - Mon, Feb 9
SOF
Sofia
USM
Koh Samui
$1,177 Roundtrip, found 5 days ago
$1,177
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Mon, Jan 26 from Sofia to Koh Samui, returning Mon, Feb 9, priced at $1,177 found 5 days ago
Swiss International Air Lines
Mon, Jan 26 - Mon, Feb 9
SOF
Sofia
USM
Koh Samui
$1,180 Roundtrip, found 5 days ago
$1,180
Roundtrip
found 5 days ago
Select Swiss International Air Lines flight, departing Mon, Jan 26 from Sofia to Koh Samui, returning Mon, Feb 9, priced at $1,180 found 5 days ago
Lufthansa
Mon, Jan 26 - Mon, Feb 9
SOF
Sofia
USM
Koh Samui
$1,215 Roundtrip, found 5 days ago
$1,215
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Mon, Jan 26 from Sofia to Koh Samui, returning Mon, Feb 9, priced at $1,215 found 5 days ago
Swiss International Air Lines
Mon, Jan 26 - Mon, Feb 9
SOF
Sofia
USM
Koh Samui
$1,218 Roundtrip, found 5 days ago
$1,218
Roundtrip
found 5 days ago
Select Swiss International Air Lines flight, departing Mon, Jan 26 from Sofia to Koh Samui, returning Mon, Feb 9, priced at $1,218 found 5 days ago
Lufthansa
Mon, Jan 26 - Mon, Feb 9
SOF
Sofia
USM
Koh Samui
$1,247 Roundtrip, found 5 days ago
$1,247
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Mon, Jan 26 from Sofia to Koh Samui, returning Mon, Feb 9, priced at $1,247 found 5 days ago
Austrian Airlines
Mon, Jan 26 - Mon, Feb 9
SOF
Sofia
USM
Koh Samui
$1,267 Roundtrip, found 5 days ago
$1,267
Roundtrip
found 5 days ago
Select Austrian Airlines flight, departing Mon, Jan 26 from Sofia to Koh Samui, returning Mon, Feb 9, priced at $1,267 found 5 days ago
Lufthansa
Mon, Jan 26 - Mon, Feb 9
SOF
Sofia
USM
Koh Samui
$1,273 Roundtrip, found 5 days ago
$1,273
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Mon, Jan 26 from Sofia to Koh Samui, returning Mon, Feb 9, priced at $1,273 found 5 days ago
Turkish Airlines
Tue, Jan 6 - Thu, Jan 22
SOF
Sofia
USM
Koh Samui
$1,322 Roundtrip, found 1 day ago
$1,322
Roundtrip
found 1 day ago
Select Turkish Airlines flight, departing Tue, Jan 6 from Sofia to Koh Samui, returning Thu, Jan 22, priced at $1,322 found 1 day ago
Qatar Airways
Sat, Feb 14 - Sat, Feb 21
SOF
Sofia
USM
Koh Samui
$1,358 Roundtrip, found 1 day ago
$1,358
Roundtrip
found 1 day ago
Select Qatar Airways flight, departing Sat, Feb 14 from Sofia to Koh Samui, returning Sat, Feb 21, priced at $1,358 found 1 day ago
Flights from Sofia (SOF) to Samui Intl. Airport (USM)
Origin airport
Sofia
Destination airport
Samui Intl. Airport
Airlines serving
Air France, Austrian Airlines, KLM, Lufthansa, Qatar Airways, Turkish Airlines
Roundtrip price
$1,157
Distance
5095 mi

Sofia to Samui Intl. Airport Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Sofia 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 Sofia 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 Sofia to Samui Intl. Airport in 2025. You can also book with separate airlines for your outbound and return journeys, from $714 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 Sofia 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 Sofia 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 Sofia Airport (SOF) to Ko Samui Airport (USM) cost?
Lock in a cheap one-way flight from $714 or cheap return flight from $1,157 from Sofia Airport (SOF) to Ko Samui Airport (USM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Sofia Airport (SOF) to Ko Samui Airport (USM)?
January is the cheapest month to fly from SOF to USM. Traveling during quieter months is often the key to finding better deals on flights.
What is the cheapest airline that flies from Sofia Airport (SOF) to Ko Samui Airport (USM)?
To find the cheapest airline flying from SOF to USM, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Sofia Airport (SOF) to Ko Samui Airport (USM)?
Nonstop flights from Sofia Airport (SOF) to Ko Samui Airport (USM) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SOF to USM?
Usually you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the season, 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 Sofia Airport (SOF) to Ko Samui Airport (USM)?
To land at Ko Samui Airport (USM) without delays, select a flight that takes off from Sofia Airport (SOF) before 3 PM. The chance 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 Sofia Airport (SOF) to Ko Samui Airport (USM) last-minute?
Booking your flight from SOF to USM right before your trip is usually more expensive. However, if you're flexible with your itinerary, you could land a cheap last-minute fare.
Is it cheaper to book a SOF to USM flight and hotel package?
Opting for a SOF to USM flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our impressive range of hotels and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Sofia Airport (SOF) to Ko Samui Airport (USM)?
Typically, you can modify or cancel your SOF to USM flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you need more details, head to our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.