$83 Cheap Flights from Istanbul (IST) to Sofia (SOF)

View $83 flight on Sat, Nov 29, 2025Opens in a new window

Popular airlines from Istanbul Airport (IST) to Sofia Airport (SOF)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Istanbul to Sofia (IST-SOF)

Prices were available within the past 7 days and start at $83 for one-way flights and $162 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Turkish Airlines
Sun, Feb 22 - Tue, Mar 10
IST
Istanbul
SOF
Sofia
$162 Roundtrip, found 4 days ago
$162
Roundtrip
found 4 days ago
Select Turkish Airlines flight, departing Sun, Feb 22 from Istanbul to Sofia, returning Tue, Mar 10, priced at $162 found 4 days ago
Turkish Airlines
Sun, Feb 22 - Mon, Mar 9
IST
Istanbul
SOF
Sofia
$167 Roundtrip, found 4 days ago
$167
Roundtrip
found 4 days ago
Select Turkish Airlines flight, departing Sun, Feb 22 from Istanbul to Sofia, returning Mon, Mar 9, priced at $167 found 4 days ago
Turkish Airlines
Fri, Feb 6 - Wed, Feb 18
IST
Istanbul
SOF
Sofia
$171 Roundtrip, found 2 hours ago
$171
Roundtrip
found 2 hours ago
Select Turkish Airlines flight, departing Fri, Feb 6 from Istanbul to Sofia, returning Wed, Feb 18, priced at $171 found 2 hours ago
Turkish Airlines
Thu, Jan 22 - Thu, Feb 12
IST
Istanbul
SOF
Sofia
$193 Roundtrip, found 2 days ago
$193
Roundtrip
found 2 days ago
Select Turkish Airlines flight, departing Thu, Jan 22 from Istanbul to Sofia, returning Thu, Feb 12, priced at $193 found 2 days ago
Aegean
Sun, Nov 16 - Wed, Nov 19
IST
Istanbul
SOF
Sofia
$194 Roundtrip, found 2 hours ago
$194
Roundtrip
found 2 hours ago
Select Aegean flight, departing Sun, Nov 16 from Istanbul to Sofia, returning Wed, Nov 19, priced at $194 found 2 hours ago
Air Serbia
Fri, Feb 6 - Wed, Feb 18
IST
Istanbul
SOF
Sofia
$223 Roundtrip, found 2 hours ago
$223
Roundtrip
found 2 hours ago
Select Air Serbia flight, departing Fri, Feb 6 from Istanbul to Sofia, returning Wed, Feb 18, priced at $223 found 2 hours ago
Tarom-Romanian Air Transport
Sun, Jan 18 - Mon, Jan 19
IST
Istanbul
SOF
Sofia
$236 Roundtrip, found 2 days ago
$236
Roundtrip
found 2 days ago
Select Tarom-Romanian Air Transport flight, departing Sun, Jan 18 from Istanbul to Sofia, returning Mon, Jan 19, priced at $236 found 2 days ago
SKY express
Tue, Feb 10 - Sun, Feb 22
IST
Istanbul
SOF
Sofia
$247 Roundtrip, found 4 days ago
$247
Roundtrip
found 4 days ago
Select SKY express flight, departing Tue, Feb 10 from Istanbul to Sofia, returning Sun, Feb 22, priced at $247 found 4 days ago
LOT-Polish Airlines
Tue, Mar 10 - Mon, Mar 16
IST
Istanbul
SOF
Sofia
$255 Roundtrip, found 3 days ago
$255
Roundtrip
found 3 days ago
Select LOT-Polish Airlines flight, departing Tue, Mar 10 from Istanbul to Sofia, returning Mon, Mar 16, priced at $255 found 3 days ago
Lufthansa
Wed, Jun 10 - Sat, Jun 13
IST
Istanbul
SOF
Sofia
$260 Roundtrip, found 4 days ago
$260
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Wed, Jun 10 from Istanbul to Sofia, returning Sat, Jun 13, priced at $260 found 4 days ago

Find the cheapest month to fly from Istanbul (IST) to Sofia (SOF)

February is typically the cheapest month to fly

From $90 - $255 per traveler.

Alternative airports near Sofia

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

Select flight to Sofia Airport SOF. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $138
SOF
Sofia Airport
CheapestClosest
Average driving time to city center11 min
Flights from $138
Flights from Istanbul (IST) to Sofia (SOF)
Origin airport
Istanbul
Destination airport
Sofia
Airlines serving
Aegean, Air Serbia, British Airways, ITA Airways, LOT-Polish Airlines, Tarom-Romanian Air Transport, Turkish Airlines
Roundtrip price
$162
Distance
291 mi
Average flight time
1 hour 21 mins

Istanbul to Sofia Flights

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

 

The best time to book a flight from Istanbul to Sofia

Sunday is one of the best days to book for cheap flights from Istanbul 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 Istanbul 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 Istanbul to Sofia in 2025. You can also book with separate airlines for your outbound and return journeys, from $83 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 Istanbul 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 Istanbul 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 Istanbul (IST) to Sofia Airport (SOF) cost?
Get a cheap one-way flight from $83 or cheap return flight from $162 from Istanbul (IST) to Sofia Airport (SOF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Istanbul (IST) to Sofia Airport (SOF)?
February is the most affordable month to fly from IST to SOF. Planning your trip for the off-season is often the key to landing a great deal.
Which airlines fly direct from Istanbul (IST) to Sofia Airport (SOF)?
Direct flights aren't available from Istanbul (IST) to Sofia Airport (SOF). However, you'll find other airports with nonstop flights. Start your journey at Ataturk Intl. Airport (IST) and fly straight to Sofia without layovers.
What is the cheapest airline that flies from Istanbul (IST) to Sofia Airport (SOF)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest IST to SOF flight.
How many flights per day from Istanbul (IST) to Sofia Airport (SOF)?
There aren't any daily direct flights departing from Istanbul (IST) to Sofia Airport (SOF). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way in no time.
What day of the week has the most flights from IST to SOF?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change 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 Istanbul (IST) to Sofia Airport (SOF)?
To avoid possible delays on the Istanbul (IST) to Sofia Airport (SOF) route, travel before 3 PM. Later departures have a 22% higher chance of being canceled.**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 Istanbul (IST) to Sofia Airport (SOF) last-minute?
Booking your ticket from IST to SOF shortly before your journey is generally more expensive. But if there's some wiggle room with your travel dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book an IST to SOF flight and hotel package?
Compared with arranging hotels and flights separately, booking an IST to SOF flight and hotel package with Expedia could lead to significant savings. Better yet, having it all in one place will take the stress out of planning your trip. Just secure your flights and choose from our wide range of stays, then personalize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Istanbul (IST) to Sofia Airport (SOF)?
It's usually possible to reschedule or cancel your IST to SOF flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.