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

View $83 flight on Wed, Feb 18, 2026Opens in a new window

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

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 $145 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Turkish Airlines
Thu, Oct 30 - Wed, Nov 5
IST
Istanbul
SOF
Sofia
$145 Roundtrip, found 1 day ago
$145
Roundtrip
found 1 day ago
Select Turkish Airlines flight, departing Thu, Oct 30 from Istanbul to Sofia, returning Wed, Nov 5, priced at $145 found 1 day ago
Turkish Airlines
Sat, Oct 4 - Wed, Oct 8
IST
Istanbul
SOF
Sofia
$154 Roundtrip, found 23 hours ago
$154
Roundtrip
found 23 hours ago
Select Turkish Airlines flight, departing Sat, Oct 4 from Istanbul to Sofia, returning Wed, Oct 8, priced at $154 found 23 hours ago
Aegean
Fri, Jan 23 - Fri, Jan 30
IST
Istanbul
SOF
Sofia
$162 Roundtrip, found 2 days ago
$162
Roundtrip
found 2 days ago
Select Aegean flight, departing Fri, Jan 23 from Istanbul to Sofia, returning Fri, Jan 30, priced at $162 found 2 days ago
Air Serbia
Mon, Nov 3 - Tue, Nov 4
IST
Istanbul
SOF
Sofia
$223 Roundtrip, found 1 day ago
$223
Roundtrip
found 1 day ago
Select Air Serbia flight, departing Mon, Nov 3 from Istanbul to Sofia, returning Tue, Nov 4, priced at $223 found 1 day ago
Lufthansa
Thu, Apr 16 - Sun, Apr 26
IST
Istanbul
SOF
Sofia
$233 Roundtrip, found 4 days ago
$233
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Thu, Apr 16 from Istanbul to Sofia, returning Sun, Apr 26, priced at $233 found 4 days ago
LOT-Polish Airlines
Sat, Oct 4 - Wed, Oct 8
IST
Istanbul
SOF
Sofia
$254 Roundtrip, found 23 hours ago
$254
Roundtrip
found 23 hours ago
Select LOT-Polish Airlines flight, departing Sat, Oct 4 from Istanbul to Sofia, returning Wed, Oct 8, priced at $254 found 23 hours ago
SKY express
Fri, Sep 19 - Sun, Sep 21
IST
Istanbul
SOF
Sofia
$279 Roundtrip, found 3 days ago
$279
Roundtrip
found 3 days ago
Select SKY express flight, departing Fri, Sep 19 from Istanbul to Sofia, returning Sun, Sep 21, priced at $279 found 3 days ago
Tarom-Romanian Air Transport
Tue, Dec 30 - Wed, Dec 31
IST
Istanbul
SOF
Sofia
$365 Roundtrip, found 2 days ago
$365
Roundtrip
found 2 days ago
Select Tarom-Romanian Air Transport flight, departing Tue, Dec 30 from Istanbul to Sofia, returning Wed, Dec 31, priced at $365 found 2 days ago
ITA Airways
Fri, Oct 31 - Tue, Nov 4
IST
Istanbul
SOF
Sofia
$520 Roundtrip, just found
$520
Roundtrip
just found
Select ITA Airways flight, departing Fri, Oct 31 from Istanbul to Sofia, returning Tue, Nov 4, priced at $520 just found

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

February is typically the cheapest month to fly

From $90 - $260 per traveler.

Graph displaying average flight prices per month

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 $221
SOF
Sofia Airport
CheapestClosest
Average driving time to city center11 min
Flights from $221
Flights from Istanbul (IST) to Sofia (SOF)
Origin airport
Istanbul
Destination airport
Sofia
Airlines serving
Aegean, Air Serbia, ITA Airways, LOT-Polish Airlines, Lufthansa, SKY express, Tarom-Romanian Air Transport, Turkish Airlines
Roundtrip price
$145
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 October. 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 $145 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)?
October 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.

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*Available to One Key members.