$126 Cheap Flights from Sofia (SOF) to Helsinki (HEL)

View $126 flight on Tue, Sep 23, 2025Opens in a new window

Popular airlines from Sofia Airport (SOF) to Helsinki-Vantaa Airport (HEL)

Cheap Flights from Sofia to Helsinki (SOF-HEL)

Prices were available within the past 7 days and start at $126 for one-way flights and $219 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Baltic
Sat, Sep 20 - Fri, Sep 26
SOF
Sofia
HEL
Helsinki
$219 Roundtrip, found 1 day ago
$219
Roundtrip
found 1 day ago
Select Air Baltic flight, departing Sat, Sep 20 from Sofia to Helsinki, returning Fri, Sep 26, priced at $219 found 1 day ago
Lufthansa
Fri, Oct 31 - Thu, Nov 6
SOF
Sofia
HEL
Helsinki
$246 Roundtrip, found 1 day ago
$246
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Fri, Oct 31 from Sofia to Helsinki, returning Thu, Nov 6, priced at $246 found 1 day ago
Lufthansa
Fri, Oct 31 - Thu, Nov 6
SOF
Sofia
HEL
Helsinki
$256 Roundtrip, found 1 day ago
$256
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Fri, Oct 31 from Sofia to Helsinki, returning Thu, Nov 6, priced at $256 found 1 day ago
Lufthansa
Fri, Sep 5 - Wed, Sep 10
SOF
Sofia
HEL
Helsinki
$264 Roundtrip, found 3 days ago
$264
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Fri, Sep 5 from Sofia to Helsinki, returning Wed, Sep 10, priced at $264 found 3 days ago
Lufthansa
Sat, Sep 20 - Fri, Sep 26
SOF
Sofia
HEL
Helsinki
$265 Roundtrip, found 1 day ago
$265
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Sat, Sep 20 from Sofia to Helsinki, returning Fri, Sep 26, priced at $265 found 1 day ago
Air Baltic
Sat, Sep 20 - Fri, Sep 26
SOF
Sofia
HEL
Helsinki
$272 Roundtrip, found 1 day ago
$272
Roundtrip
found 1 day ago
Select Air Baltic flight, departing Sat, Sep 20 from Sofia to Helsinki, returning Fri, Sep 26, priced at $272 found 1 day ago
Lufthansa
Fri, Sep 5 - Mon, Sep 8
SOF
Sofia
HEL
Helsinki
$281 Roundtrip, found 6 days ago
$281
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Fri, Sep 5 from Sofia to Helsinki, returning Mon, Sep 8, priced at $281 found 6 days ago
Austrian Airlines
Fri, Oct 31 - Thu, Nov 6
SOF
Sofia
HEL
Helsinki
$300 Roundtrip, found 1 day ago
$300
Roundtrip
found 1 day ago
Select Austrian Airlines flight, departing Fri, Oct 31 from Sofia to Helsinki, returning Thu, Nov 6, priced at $300 found 1 day ago
Turkish Airlines
Wed, Oct 1 - Wed, Oct 8
SOF
Sofia
HEL
Helsinki
$423 Roundtrip, found 19 hours ago
$423
Roundtrip
found 19 hours ago
Select Turkish Airlines flight, departing Wed, Oct 1 from Sofia to Helsinki, returning Wed, Oct 8, priced at $423 found 19 hours ago
Aegean
Sat, Sep 6 - Sun, Sep 14
SOF
Sofia
HEL
Helsinki
$432 Roundtrip, found 6 days ago
$432
Roundtrip
found 6 days ago
Select Aegean flight, departing Sat, Sep 6 from Sofia to Helsinki, returning Sun, Sep 14, priced at $432 found 6 days ago

Alternative airports near Helsinki

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Vantaa HEL. Cheapest option available. Average driving time to city center is 22 minutes. Flights from $429
HEL
Vantaa
Cheapest
Average driving time to city center22 min
Flights from $429
Flights from Sofia (SOF) to Helsinki (HEL)
Origin airport
Sofia
Destination airport
Vantaa
Airlines serving
Air France, Austrian Airlines, KLM, LOT-Polish Airlines, Lufthansa, Turkish Airlines
Roundtrip price
$218
Distance
1219 mi

Sofia to Helsinki Flights

The cheapest times to fly from Sofia to Helsinki

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

 

The best time to book a flight from Sofia to Helsinki

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

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 Helsinki in 2025. You can also book with separate airlines for your outbound and return journeys, from $126 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 Helsinki 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 Helsinki 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 Vantaa Airport (HEL) cost?
Secure a cheap one-way flight from $126 or cheap return flight from $219 from Sofia Airport (SOF) to Vantaa Airport (HEL) 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 Sofia Airport (SOF) to Vantaa Airport (HEL)?
The cheapest month to fly from SOF to HEL is September, when there's less demand. Off-peak season is generally when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Sofia Airport (SOF) to Vantaa Airport (HEL)?
To find the cheapest airline that'll fly you from SOF to HEL, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Sofia Airport (SOF) to Vantaa Airport (HEL)?
You'll have to catch a flight with a layover if you're traveling from Sofia Airport (SOF) to Vantaa Airport (HEL). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from SOF to HEL?
Usually you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But this can vary based 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 Sofia Airport (SOF) to Vantaa Airport (HEL)?
To reach Vantaa Airport (HEL) on time, choose a flight that takes off from Sofia Airport (SOF) before 3 PM. The likelihood 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 Vantaa Airport (HEL) last-minute?
Holding off until right before your break to book a flight from SOF to HEL generally means paying more. While you may find some last-minute discounts, there's no guarantee. Be flexible with your travel plans to boost your chances of snagging a bargain.
Is it cheaper to book a SOF to HEL flight and hotel package?
Compared with arranging flights and hotels separately, booking a SOF to HEL flight and hotel package with Expedia could result in significant savings. Better yet, having it all in one place will take the hassle out of planning your trip. Just secure your flights and select from our extensive range of stays, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Sofia Airport (SOF) to Vantaa Airport (HEL)?
In most cases, you're able to cancel or reschedule your SOF to HEL flight. However, additional charges may apply, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you want more details, visit our Customer Service portal.

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*Available to One Key members.