$152 Cheap Flights from Sofia (SOF) to Billund (BLL)

View $152 flight on Wed, Oct 1, 2025Opens in a new window

Popular airlines from Sofia Airport (SOF) to Billund (BLL)

Cheap Flights from Sofia to Billund (SOF-BLL)

Prices were available within the past 7 days and start at $152 for one-way flights and $197 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Wed, Oct 1 - Mon, Oct 6
SOF
Sofia
BLL
Billund
$197 Roundtrip, found 3 days ago
$197
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Wed, Oct 1 from Sofia to Billund, returning Mon, Oct 6, priced at $197 found 3 days ago
Lufthansa
Wed, Oct 1 - Mon, Oct 6
SOF
Sofia
BLL
Billund
$206 Roundtrip, found 3 days ago
$206
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Wed, Oct 1 from Sofia to Billund, returning Mon, Oct 6, priced at $206 found 3 days ago
Lufthansa
Tue, Aug 12 - Fri, Sep 5
SOF
Sofia
BLL
Billund
$215 Roundtrip, found 2 days ago
$215
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Tue, Aug 12 from Sofia to Billund, returning Fri, Sep 5, priced at $215 found 2 days ago
Lufthansa
Thu, Sep 18 - Mon, Sep 22
SOF
Sofia
BLL
Billund
$217 Roundtrip, found 2 days ago
$217
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Thu, Sep 18 from Sofia to Billund, returning Mon, Sep 22, priced at $217 found 2 days ago
Lufthansa
Mon, Sep 22 - Sun, Sep 28
SOF
Sofia
BLL
Billund
$224 Roundtrip, found 3 days ago
$224
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Mon, Sep 22 from Sofia to Billund, returning Sun, Sep 28, priced at $224 found 3 days ago
Lufthansa
Tue, Aug 12 - Fri, Sep 5
SOF
Sofia
BLL
Billund
$233 Roundtrip, found 2 days ago
$233
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Tue, Aug 12 from Sofia to Billund, returning Fri, Sep 5, priced at $233 found 2 days ago
LOT-Polish Airlines
Mon, Sep 22 - Sun, Sep 28
SOF
Sofia
BLL
Billund
$248 Roundtrip, found 3 days ago
$248
Roundtrip
found 3 days ago
Select LOT-Polish Airlines flight, departing Mon, Sep 22 from Sofia to Billund, returning Sun, Sep 28, priced at $248 found 3 days ago
Turkish Airlines
Wed, Oct 1 - Mon, Oct 6
SOF
Sofia
BLL
Billund
$432 Roundtrip, found 3 days ago
$432
Roundtrip
found 3 days ago
Select Turkish Airlines flight, departing Wed, Oct 1 from Sofia to Billund, returning Mon, Oct 6, priced at $432 found 3 days ago
Air Baltic
Tue, Aug 12 - Fri, Sep 5
SOF
Sofia
BLL
Billund
$482 Roundtrip, found 2 days ago
$482
Roundtrip
found 2 days ago
Select Air Baltic flight, departing Tue, Aug 12 from Sofia to Billund, returning Fri, Sep 5, priced at $482 found 2 days ago
Norwegian Air Shuttle
Sun, Jul 27 - Sat, Aug 23
SOF
Sofia
BLL
Billund
$562 Roundtrip, found 2 days ago
$562
Roundtrip
found 2 days ago
Select Norwegian Air Shuttle flight, departing Sun, Jul 27 from Sofia to Billund, returning Sat, Aug 23, priced at $562 found 2 days ago
Flights from Sofia (SOF) to Billund (BLL)
Origin airport
Sofia
Destination airport
Billund
Roundtrip price
$196
Distance
1103 mi

Sofia to Billund Flights

The cheapest times to fly from Sofia to Billund

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 Billund are during the month of October. You can find some of the cheapest flights from Sofia to Billund with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sofia to Billund

Sunday is one of the best days to book for cheap flights from Sofia to Billund: 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 Billund

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 Billund in 2025. You can also book with separate airlines for your outbound and return journeys, from $152 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 Billund 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 Billund 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 Billund Airport (BLL) cost?
Discover the latest flight deals from SOF to BLL 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 SOF to BLL?
The cheapest flights from SOF to BLL 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 SOF to BLL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SOF to BLL. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Sofia Airport (SOF) to Billund Airport (BLL)?
Nonstop flights from Sofia Airport (SOF) to Billund Airport (BLL) 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 pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SOF to BLL?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary based on a number of factors, such as the time of year and carrier.*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 Billund Airport (BLL)?
To arrive at Billund Airport (BLL) on time, opt for a flight that leaves from Sofia Airport (SOF) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Billund Airport (BLL) last-minute?
Booking your flight from SOF to BLL just before your journey is usually more expensive. However, if you're flexible with your travel dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a SOF to BLL flight and hotel package?
Compared with arranging hotels and flights separately, booking a SOF to BLL flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place takes the hassle out of planning your trip. Just secure your flights and select from our extensive range of hotels, then customize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Sofia Airport (SOF) to Billund Airport (BLL)?
If you reserved your SOF to BLL flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

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*Available to One Key members.