$82 Cheap Flights from Sofia (SOF) to Istanbul (IST)

View $82 flight on Sun, Jan 11, 2026Opens in a new window

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

Cheap Flights from Sofia to Istanbul (SOF-IST)

Prices were available within the past 7 days and start at $82 for one-way flights and $167 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Turkish Airlines
Wed, Dec 17 - Wed, Dec 31
SOF
Sofia
IST
Istanbul
$167 Roundtrip, found 4 days ago
$167
Roundtrip
found 4 days ago
Select Turkish Airlines flight, departing Wed, Dec 17 from Sofia to Istanbul, returning Wed, Dec 31, priced at $167 found 4 days ago
Aegean
Tue, Nov 18 - Thu, Nov 20
SOF
Sofia
IST
Istanbul
$193 Roundtrip, found 2 days ago
$193
Roundtrip
found 2 days ago
Select Aegean flight, departing Tue, Nov 18 from Sofia to Istanbul, returning Thu, Nov 20, priced at $193 found 2 days ago
SKY express
Sun, Jan 11 - Tue, Jan 20
SOF
Sofia
IST
Istanbul
$216 Roundtrip, found 5 hours ago
$216
Roundtrip
found 5 hours ago
Select SKY express flight, departing Sun, Jan 11 from Sofia to Istanbul, returning Tue, Jan 20, priced at $216 found 5 hours ago
Tarom-Romanian Air Transport
Tue, Feb 3 - Wed, Feb 4
SOF
Sofia
IST
Istanbul
$222 Roundtrip, found 1 day ago
$222
Roundtrip
found 1 day ago
Select Tarom-Romanian Air Transport flight, departing Tue, Feb 3 from Sofia to Istanbul, returning Wed, Feb 4, priced at $222 found 1 day ago
Air Serbia
Thu, Jan 22 - Sat, Jan 24
SOF
Sofia
IST
Istanbul
$247 Roundtrip, found 1 hour ago
$247
Roundtrip
found 1 hour ago
Select Air Serbia flight, departing Thu, Jan 22 from Sofia to Istanbul, returning Sat, Jan 24, priced at $247 found 1 hour ago
LOT-Polish Airlines
Thu, Jul 9 - Thu, Jul 16
SOF
Sofia
IST
Istanbul
$259 Roundtrip, found 2 hours ago
$259
Roundtrip
found 2 hours ago
Select LOT-Polish Airlines flight, departing Thu, Jul 9 from Sofia to Istanbul, returning Thu, Jul 16, priced at $259 found 2 hours ago
British Airways
Sat, Nov 29 - Wed, Dec 3
SOF
Sofia
IST
Istanbul
$667 Roundtrip, found 2 days ago
$667
Roundtrip
found 2 days ago
Select British Airways flight, departing Sat, Nov 29 from Sofia to Istanbul, returning Wed, Dec 3, priced at $667 found 2 days ago

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

February is typically the cheapest month to fly

From $89 - $232 per traveler.

Alternative airports near Istanbul

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

Select flight to Istanbul Airport IST. Cheapest option available. Average driving time to city center is 35 minutes. Flights from $238
IST
Istanbul Airport
Cheapest
Average driving time to city center35 min
Flights from $238

Frequently asked questions

How much does a flight from Sofia Airport (SOF) to Istanbul (IST) cost?
Snag a cheap one-way flight from $82 or cheap return flight from $167 from Sofia Airport (SOF) to Istanbul (IST) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Sofia Airport (SOF) to Istanbul (IST)?
Traveling in December is a good way to save, as it's the cheapest month for flights between SOF and IST. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Sofia Airport (SOF) to Istanbul (IST)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest SOF to IST flight.
How many flights per day from Sofia Airport (SOF) to Istanbul (IST)?
You'll have to take a flight with a layover if you're traveling from Sofia Airport (SOF) to Istanbul (IST). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from SOF to IST?
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 Sofia Airport (SOF) to Istanbul (IST)?
To land at Istanbul (IST) without delays, opt for a flight that leaves from Sofia Airport (SOF) before 3 PM. The chance 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 Istanbul (IST) last-minute?
Last-minute fares from SOF to IST are generally more expensive. To secure the lowest prices, start searching for flights early. That being said, if you can play around with your travel dates, it's possible to find a cheap fare right before your journey.
Can I cancel or change the date of my flight from Sofia Airport (SOF) to Istanbul (IST)?
It's generally possible to reschedule or cancel your SOF to IST flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Sofia
Destination airport
Istanbul
Airlines serving
Aegean, Air Serbia, British Airways, LOT-Polish Airlines, SKY express, Tarom-Romanian Air Transport, Turkish Airlines
Roundtrip price
$167
Distance
291 mi
Average flight time
2 hours 31 mins

Book with confidence

Sofia to Istanbul Flights

The cheapest times to fly from Sofia to Istanbul

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

 

The best time to book a flight from Sofia to Istanbul

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

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 Istanbul in 2025. You can also book with separate airlines for your outbound and return journeys, from $82 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 Istanbul 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 Istanbul 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.

 

Sofia to Istanbul Flights

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*Available to One Key members.