$239 Cheap Flights from Sofia (SOF) to Ermoupolis (JSY)

View $239 flight on Wed, Sep 24, 2025Opens in a new window

Popular airlines from Sofia Airport (SOF) to Ermoupolis (JSY-Syros Island National)

Cheap Flights from Sofia to Ermoupolis (SOF-JSY)

Prices were available within the past 7 days and start at $239 for one-way flights and $267 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

SKY express
Sun, Nov 23 - Fri, Dec 12
SOF
Sofia
JSY
Ermoupoli
$267 Roundtrip, found 4 days ago
$267
Roundtrip
found 4 days ago
Select SKY express flight, departing Sun, Nov 23 from Sofia to Ermoupoli, returning Fri, Dec 12, priced at $267 found 4 days ago
SKY express
Sun, Nov 30 - Wed, Dec 17
SOF
Sofia
JSY
Ermoupoli
$279 Roundtrip, found 4 days ago
$279
Roundtrip
found 4 days ago
Select SKY express flight, departing Sun, Nov 30 from Sofia to Ermoupoli, returning Wed, Dec 17, priced at $279 found 4 days ago
SKY express
Sun, Nov 9 - Fri, Nov 28
SOF
Sofia
JSY
Ermoupoli
$283 Roundtrip, found 4 days ago
$283
Roundtrip
found 4 days ago
Select SKY express flight, departing Sun, Nov 9 from Sofia to Ermoupoli, returning Fri, Nov 28, priced at $283 found 4 days ago
SKY express
Sun, Oct 26 - Wed, Nov 12
SOF
Sofia
JSY
Ermoupoli
$294 Roundtrip, found 4 days ago
$294
Roundtrip
found 4 days ago
Select SKY express flight, departing Sun, Oct 26 from Sofia to Ermoupoli, returning Wed, Nov 12, priced at $294 found 4 days ago
SKY express
Sun, Oct 26 - Fri, Nov 14
SOF
Sofia
JSY
Ermoupoli
$310 Roundtrip, found 4 days ago
$310
Roundtrip
found 4 days ago
Select SKY express flight, departing Sun, Oct 26 from Sofia to Ermoupoli, returning Fri, Nov 14, priced at $310 found 4 days ago
SKY express
Mon, Oct 20 - Fri, Nov 7
SOF
Sofia
JSY
Ermoupoli
$368 Roundtrip, found 4 days ago
$368
Roundtrip
found 4 days ago
Select SKY express flight, departing Mon, Oct 20 from Sofia to Ermoupoli, returning Fri, Nov 7, priced at $368 found 4 days ago
SKY express
Mon, Oct 13 - Fri, Oct 31
SOF
Sofia
JSY
Ermoupoli
$403 Roundtrip, found 4 days ago
$403
Roundtrip
found 4 days ago
Select SKY express flight, departing Mon, Oct 13 from Sofia to Ermoupoli, returning Fri, Oct 31, priced at $403 found 4 days ago
Hahn Air Systems
Mon, Oct 6 - Wed, Oct 22
SOF
Sofia
JSY
Ermoupoli
$480 Roundtrip, found 4 days ago
$480
Roundtrip
found 4 days ago
Select Hahn Air Systems flight, departing Mon, Oct 6 from Sofia to Ermoupoli, returning Wed, Oct 22, priced at $480 found 4 days ago
KLM
Tue, Nov 4 - Fri, Nov 21
SOF
Sofia
JSY
Ermoupoli
$749 Roundtrip, found 4 days ago
$749
Roundtrip
found 4 days ago
Select KLM flight, departing Tue, Nov 4 from Sofia to Ermoupoli, returning Fri, Nov 21, priced at $749 found 4 days ago
LOT-Polish Airlines
Wed, Nov 5 - Mon, Nov 24
SOF
Sofia
JSY
Ermoupoli
$782 Roundtrip, found 4 days ago
$782
Roundtrip
found 4 days ago
Select LOT-Polish Airlines flight, departing Wed, Nov 5 from Sofia to Ermoupoli, returning Mon, Nov 24, priced at $782 found 4 days ago

Alternative airports near Ermoupoli

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

Select flight to Mykonos Island National JMK. Cheapest option available. Average driving time to city center is 5 hours 54 minutes. Flights from $440
JMK
Mykonos Island National
Cheapest
Average driving time to city center5 h 54 min
Flights from $440
Flights from Sofia (SOF) to Ermoupolis (JSY)
Origin airport
Sofia
Destination airport
Syros Island National
Roundtrip price
$266
Distance
372 mi

Sofia to Ermoupolis Flights

The cheapest times to fly from Sofia to Ermoupolis

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

 

The best time to book a flight from Sofia to Ermoupolis

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

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 Ermoupolis in 2025. You can also book with separate airlines for your outbound and return journeys, from $239 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 Ermoupolis 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 Ermoupolis 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 Syros Island National Airport (JSY) cost?
Discover the latest flight deals from SOF to JSY 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 JSY?
The cheapest flights from SOF to JSY 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 JSY?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SOF to JSY. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Sofia Airport (SOF) to Syros Island National Airport (JSY)?
You'll have to book a flight with a layover if you're traveling from Sofia Airport (SOF) to Syros Island National Airport (JSY). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from SOF to JSY?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*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 Syros Island National Airport (JSY)?
To land at Syros Island National Airport (JSY) on time, opt for a flight that leaves Sofia Airport (SOF) before 3 PM. The likelihood 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 Syros Island National Airport (JSY) last-minute?
Last-minute bookings from SOF to JSY are usually more expensive. For the cheapest rates, start looking for flights well in advance. That being said, if you're flexible with your travel plans, you may find a cheap fare right before you leave.
Is it cheaper to book a SOF to JSY flight and hotel package?
Compared with arranging hotels and flights separately, booking a SOF to JSY flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one place takes the hassle out of travel planning. Just secure your flights and choose from our extensive range of hotels, then tailor your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Sofia Airport (SOF) to Syros Island National Airport (JSY)?
Usually, it's possible to reschedule or cancel your SOF to JSY flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.