$52 Cheap Flights from Athens (ATH) to Sofia (SOF)

View $52 flight on Mon, Dec 1, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Athens to Sofia (ATH-SOF)

Prices were available within the past 7 days and start at $52 for one-way flights and $93 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aegean
Mon, Dec 1 - Fri, Dec 5
ATH
Athens
SOF
Sofia
$93 Roundtrip, found 4 days ago
$93
Roundtrip
found 4 days ago
Select Aegean flight, departing Mon, Dec 1 from Athens to Sofia, returning Fri, Dec 5, priced at $93 found 4 days ago
Aegean
Mon, Dec 1 - Fri, Dec 5
ATH
Athens
SOF
Sofia
$103 Roundtrip, found 4 days ago
$103
Roundtrip
found 4 days ago
Select Aegean flight, departing Mon, Dec 1 from Athens to Sofia, returning Fri, Dec 5, priced at $103 found 4 days ago
SKY express
Thu, Jun 5 - Sun, Jun 8
ATH
Athens
SOF
Sofia
$103 Roundtrip, found 18 hours ago
$103
Roundtrip
found 18 hours ago
Select SKY express flight, departing Thu, Jun 5 from Athens to Sofia, returning Sun, Jun 8, priced at $103 found 18 hours ago
SKY express
Wed, Jul 23 - Wed, Aug 6
ATH
Athens
SOF
Sofia
$106 Roundtrip, found 1 day ago
$106
Roundtrip
found 1 day ago
Select SKY express flight, departing Wed, Jul 23 from Athens to Sofia, returning Wed, Aug 6, priced at $106 found 1 day ago
SKY express
Thu, Jun 12 - Mon, Jun 16
ATH
Athens
SOF
Sofia
$111 Roundtrip, found 1 day ago
$111
Roundtrip
found 1 day ago
Select SKY express flight, departing Thu, Jun 12 from Athens to Sofia, returning Mon, Jun 16, priced at $111 found 1 day ago
SKY express
Thu, Jun 12 - Sun, Jun 15
ATH
Athens
SOF
Sofia
$117 Roundtrip, found 1 day ago
$117
Roundtrip
found 1 day ago
Select SKY express flight, departing Thu, Jun 12 from Athens to Sofia, returning Sun, Jun 15, priced at $117 found 1 day ago
SKY express
Wed, Jan 7 - Sun, Jan 11
ATH
Athens
SOF
Sofia
$117 Roundtrip, found 2 days ago
$117
Roundtrip
found 2 days ago
Select SKY express flight, departing Wed, Jan 7 from Athens to Sofia, returning Sun, Jan 11, priced at $117 found 2 days ago
Bulgaria Air
Tue, Jun 3 - Fri, Jun 6
ATH
Athens
SOF
Sofia
$144 Roundtrip, found 4 hours ago
$144
Roundtrip
found 4 hours ago
Select Bulgaria Air flight, departing Tue, Jun 3 from Athens to Sofia, returning Fri, Jun 6, priced at $144 found 4 hours ago
Air Serbia
Fri, Jul 25 - Wed, Jul 30
ATH
Athens
SOF
Sofia
$202 Roundtrip, found 3 days ago
$202
Roundtrip
found 3 days ago
Select Air Serbia flight, departing Fri, Jul 25 from Athens to Sofia, returning Wed, Jul 30, priced at $202 found 3 days ago
Austrian Airlines
Mon, Jun 16 - Wed, Jul 9
ATH
Athens
SOF
Sofia
$250 Roundtrip, found 4 days ago
$250
Roundtrip
found 4 days ago
Select Austrian Airlines flight, departing Mon, Jun 16 from Athens to Sofia, returning Wed, Jul 9, priced at $250 found 4 days ago
Flights from Athens (ATH) to Sofia (SOF)
Origin airport
Eleftherios Venizelos
Destination airport
Sofia
Airlines serving
Aegean, Air Serbia, Austrian Airlines, Bulgaria Air, ITA Airways, LOT-Polish Airlines, Lufthansa, SKY express, Swiss International Air Lines, Tarom-Romanian Air Transport, Turkish Airlines
Roundtrip price
$93
Distance
329 mi

Athens to Sofia Flights

The cheapest times to fly from Athens to Sofia

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

The best time to book a flight from Athens to Sofia

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

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 Athens to Sofia in 2025. You can also book with separate airlines for your outbound and return journeys, from $52 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 Athens to Sofia 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 Athens to Sofia 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 Eleftherios Venizelos Airport (ATH) to Sofia Airport (SOF) cost?
You can find cheap return fares from Eleftherios Venizelos Airport (ATH) to Sofia Airport (SOF) starting at $120. Book your seat and be on your way. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Aegean flight leaving ATH on May 21 2025 and touching down at SOF. The price was last updated on April 24 2025 and has not changed since.
What is the cheapest month to fly from ATH to SOF?
The cheapest flights from ATH to SOF are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Eleftherios Venizelos Airport (ATH) to Sofia Airport (SOF)?
Take the express route to Sofia Airport (SOF). 3 carriers operate direct flights from Eleftherios Venizelos Airport (ATH), including:

  • Aegean Airlines
  • Sky Express
  • Bulgaria Air

What is the cheapest airline that flies from ATH to SOF?
At the moment, the cheapest airline operating one-way flights from ATH to SOF is Sky Express. You can jet off on this route from $67. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from ATH on June 5 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from Eleftherios Venizelos Airport (ATH) to Sofia Airport (SOF)?
Each day, an average of 2 direct flights operate from Eleftherios Venizelos Airport (ATH) to Sofia Airport (SOF). Pick the departure time that best suits your travel plans.
What are the most popular departure times for flights from Eleftherios Venizelos Airport (ATH) to Sofia Airport (SOF)?
More travelers fly between ATH and SOF at 6 PM than at any other point in the day. Rather go when it’s quieter? Pick a flight outside the busiest times and it’s possible you’ll save on your ticket as well.
What day of the week has the most flights from ATH to SOF?
If you fly on a Friday, you’ll get the biggest range of choices for flights from Eleftherios Venizelos Airport (ATH) to Sofia Airport (SOF).
What is the earliest flight from Eleftherios Venizelos Airport (ATH) to Sofia Airport (SOF)?
Eleftherios Venizelos Airport (ATH)’s earliest flight to Sofia Airport (SOF) departs at approximately 7:45AM UTC+2. With a total journey time of 1h 45m, you’ll arrive at around 9:30AM UTC+2.
How long does it take to fly from Eleftherios Venizelos Airport (ATH) to Sofia Airport (SOF)?
The average flight duration from ATH to SOF is 1 hour and 26 minutes, covering a distance of 330 mi.
What is the best time to fly from Eleftherios Venizelos Airport (ATH) to Sofia Airport (SOF)?
To avoid potential delays on the Eleftherios Venizelos Airport (ATH) to Sofia Airport (SOF) route, travel before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**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.
What airports do you fly into for Sofia from Eleftherios Venizelos Airport (ATH)?
Sofia Airport (SOF) is the only airport in Sofia with direct flights from Eleftherios Venizelos Airport (ATH). Consider the available options and discover cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Eleftherios Venizelos Airport (ATH) to Sofia Airport (SOF) last-minute?
Booking your flight from ATH to SOF just before your trip is generally more expensive. However, if you’re flexible with your schedule, you could bag a cheap last-minute fare.
Is it cheaper to book an ATH to SOF flight and hotel package?
Compared with arranging hotels and flights separately, booking an ATH to SOF flight and hotel package with Expedia could result in significant savings. What’s more, having everything in one convenient place will take the hassle out of planning your trip. Simply secure your flights and choose from our extensive range of hotels, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Eleftherios Venizelos Airport (ATH) to Sofia Airport (SOF)?
In most instances, you’re able to reschedule or cancel your ATH to SOF flight. However, there may be additional fees, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline’s policies and fees on flight changes, or if you need further information, head to our Customer Service portal.

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*Available to One Key members.