HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sofia

$70+ Cheap flights from Istanbul (IST) to Sofia (SOF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
IST — SOF
May 28 — Jun 41
Thu 5/28
Thu 6/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Istanbul to Sofia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Istanbul to Sofia are usually found in December or January, booked 64 days in advance, depart on a Friday or Sunday and return on a Wednesday

Cheap flight deals from Istanbul to Sofia

Cheapest flights from Istanbul to Sofia
Explore the most affordable flight options available from Istanbul to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/91:45 pm
IST
-
SOF
Nonstop1h 15m
Multiple Airlines
Sun 6/149:35 pm
SOF
-
IST
1 stop11h 10m
Multiple Airlines
Deal found 4/23$191
This Air Serbia deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/293:45 pm
IST
-
SOF
1 stop23h 45m
Air Serbia
Tue 6/24:00 pm
SOF
-
IST
1 stop23h 00m
Air Serbia
Deal found 4/27$195
This Air Serbia deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:30 am
IST
-
SOF
1 stop11h 00m
Air Serbia
Sat 11/215:00 am
SOF
-
IST
1 stop10h 55m
Air Serbia
Deal found 4/23$196
This Booking.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/51:45 pm
IST
-
SOF
Nonstop1h 15m
Multiple Airlines
Sun 6/78:20 pm
SOF
-
IST
1 stop12h 10m
Multiple Airlines
Deal found 4/23$202
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/121:45 pm
IST
-
SOF
Nonstop1h 15m
Multiple Airlines
Fri 5/1510:10 pm
SOF
-
IST
1 stop15h 00m
Multiple Airlines
Deal found 4/25$205
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/51:45 pm
IST
-
SOF
Nonstop1h 15m
Turkish Airlines
Wed 5/63:50 pm
SOF
-
IST
Nonstop1h 30m
Turkish Airlines
Deal found 4/27$206
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/51:45 pm
IST
-
SOF
Nonstop1h 15m
Turkish Airlines
Fri 5/89:05 pm
SOF
-
IST
Nonstop1h 30m
Turkish Airlines
Deal found 4/27$207
This Air Serbia deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/164:30 am
IST
-
SOF
1 stop22h 30m
Air Serbia
Mon 9/215:00 am
SOF
-
IST
1 stop22h 40m
Air Serbia
Deal found 4/24$208
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/91:45 pm
IST
-
SOF
Nonstop1h 15m
Turkish Airlines
Sun 6/142:05 pm
SOF
-
IST
Nonstop1h 30m
Turkish Airlines
Deal found 4/23$209
This Booking.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/21:45 pm
IST
-
SOF
Nonstop1h 15m
Turkish Airlines
Sun 5/33:50 pm
SOF
-
IST
Nonstop1h 30m
Turkish Airlines
Deal found 4/27$210
This Air Serbia deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/94:30 am
IST
-
SOF
1 stop11h 00m
Air Serbia
Tue 6/164:00 pm
SOF
-
IST
1 stop11h 40m
Air Serbia
Deal found 4/25$213
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/31:45 pm
IST
-
SOF
Nonstop1h 15m
Turkish Airlines
Wed 5/63:50 pm
SOF
-
IST
Nonstop1h 30m
Turkish Airlines
Deal found 4/27$214

Find flight deals from Istanbul to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Istanbul (IST) to Sofia (SOF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$191
(Kiwi.com)

One-way from

$70
(Kiwi.com)

Popular in

May

Cheapest in

December

Average price

$138

Good round-trip deal

$754 or less

Good one-way deal

$159 or less
Provider with most accurate pricing for Istanbul-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Istanbul-Sofia flights.
Search Deals
From Istanbul to Sofia
Search Deals
One-way flight from Istanbul to Sofia
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Istanbul to Sofia.
Search Deals
Price to beat on a one-way flight from Istanbul to Sofia.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Istanbul to Sofia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2026.
Use the filters below to find and compare flights from Istanbul Airport to Sofia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Tue 6/9

4:30 am-3:30 pm

1 stop11h 00m

Sofia

Tue 6/16

4:00 pm-3:40 am

1 stop11h 40m

$213

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Tue 5/12

4:30 am-3:30 pm

1 stop11h 00m

Sofia

Fri 5/15

5:00 am-3:00 pm

1 stop10h 00m

$216

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Thu 6/4

4:30 am-3:30 pm

1 stop11h 00m

Sofia

Sun 6/7

4:00 pm-3:55 pm

1 stop23h 55m

$220

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Tue 6/9

4:30 am-3:30 pm

1 stop11h 00m

Sofia

Sun 6/14

4:00 pm-3:40 am

1 stop11h 40m

$221

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Fri 6/5

3:45 pm-3:30 pm

1 stop23h 45m

Sofia

Sun 6/7

4:00 pm-3:55 pm

1 stop23h 55m

$221

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Fri 6/12

4:30 am-3:30 pm

1 stop11h 00m

Sofia

Sat 6/27

4:00 pm-3:40 am

1 stop11h 40m

$221

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Wed 7/8

3:45 pm-3:30 pm

1 stop23h 45m

Sofia

Wed 7/22

4:00 pm-3:40 am

1 stop11h 40m

$228
Quickest round-trip

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Sat 6/20

1:45 pm-3:00 pm

Nonstop1h 15m

Sofia

Sat 7/18

3:50 pm-5:20 pm

Nonstop1h 30m

$232

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Sat 7/4

4:30 am-3:30 pm

1 stop11h 00m

Sofia

Tue 7/14

4:00 pm-3:40 am

1 stop11h 40m

$242

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Wed 7/1

3:45 pm-3:30 pm

1 stop23h 45m

Sofia

Tue 7/14

4:00 pm-3:40 am

1 stop11h 40m

$242

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Compare providers for flights from Istanbul to Sofia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Istanbul to Sofia in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Istanbul Airport-Sofia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Istanbul Airport-Sofia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Istanbul Airport-Sofia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Istanbul Airport-Sofia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Istanbul Airport-Sofia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Istanbul to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from Istanbul with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Istanbul Airport to Sofia

How far ahead should I book a flight from Istanbul Airport to Sofia?

The price you pay for your flight from Istanbul Airport to Sofia may vary depending on when you book. For the best chance of a lower fare, look to book 63 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Istanbul Airport to Sofia?

Currently, December is the cheapest month in which you can book a flight from Istanbul Airport to Sofia (average of $112). Flying from Istanbul Airport to Sofia in May is currently the most expensive (average of $229). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IST to SOF?

Find hourly flight availability from Istanbul to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 28, 2026.

It’s typically best to fly out from Istanbul Airport to Sofia in the evening. Doing so could potentially save you 43% on the flight price compared to flying in the afternoon, which is usually more expensive.

How much does it cost to fly round-trip from Istanbul Airport to Sofia?

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sofia. Reviews last updated April 28, 2026.
Peruse reviews from past customers who have flown with Turkish Airlines and Pegasus Airlines from Istanbul Airport to Sofia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Turkish Airlines
7.4
Good
4,341 reviews

Boarding

7.3

Entertainment

7.5

Comfort

7.3

Food

7.5

Crew

7.8

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Assia,Nov 2025

IST - YUL

Wide chairs, wide screen, possibility to pair our cellphone with the screen. Tasty food.
Turkish Airlines
7.4
Good
4,341 reviews
Turkish Airlines
7.4
Good
4,341 reviews

Boarding

7.3

Entertainment

7.5

Comfort

7.3

Food

7.5

Crew

7.8

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Assia,Nov 2025

IST - YUL

Wide chairs, wide screen, possibility to pair our cellphone with the screen. Tasty food.
Pegasus Airlines
6.7
Okay
640 reviews
Turkish Airlines
7.4
Good
4,341 reviews

Boarding

7.3

Entertainment

7.5

Comfort

7.3

Food

7.5

Crew

7.8

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Assia,Nov 2025

IST - YUL

Wide chairs, wide screen, possibility to pair our cellphone with the screen. Tasty food.

Related info for your journey

Find useful and relevant information for your journey from Istanbul to Sofia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sofia from Istanbul?

    Most people fly into Sofia (SOF) if they book a flight to Sofia from Istanbul. On average, Sofia has 8 inbound flights from Istanbul per day from 2 airlines. Sofia is conveniently located just 4.2 mi from Sofia’s city center.

  • How long is the flight from Istanbul Airport to Sofia?

    Air Serbia can get you from Istanbul Airport to Sofia in just under 11h. Your travel time can differ by up to . Airlines will cover a distance of 291 mi.

  • What are the cheapest airlines flying from Istanbul Airport to Sofia round-trip?

    According to our current data, Pegasus Airlines ($93), and Turkish Airlines ($119) offers the cheapest pricing from Istanbul Airport to Sofia. You may be able to fly from Istanbul Airport to Sofia for 41% less than the average price by searching for these airlines.

  • What are the most reliable airlines from Istanbul Airport to Sofia?

    No one likes to see their flight delayed. When booking a flight from Istanbul Airport to Sofia consider choosing Egyptair (89%), Turkish Airlines (88%) or Singapore Airlines (87%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Istanbul Airport to Sofia?

    The cheapest flight price from Istanbul Airport to Sofia is $96. On average you can expect to pay $473. The most popular route, (Istanbul - Sofia), can usually be booked for $112.

  • Can I find deals for flights from Istanbul to Sofia that include hotel bookings?

    Yes. In addition to deals on Istanbul to Sofia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Istanbul to Sofia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Istanbul to Sofia.

  • Can I find deals for business class flights from Istanbul to Sofia?

    Yes. Cheapflights offers flight deals from Istanbul to Sofia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Istanbul Airport to Sofia?

    Currently, December is the cheapest month in which you can book a flight from Istanbul Airport to Sofia (average of $112). Flying from Istanbul Airport to Sofia in May is currently the most expensive (average of $229). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Complete your trip

Complete your trip to Sofia by adding a car rental and/or hotel reservation to your travel itinerary.
Sofia car rentals
Sofia Airport car rentals
Plovdiv Airport car rentals

Top 2 airlines flying from Istanbul to Sofia

Discover the top 2 airlines that operate flights from Istanbul to Sofia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Pegasus AirlinesCheapest$93Average$119FlexibilityNo cancel feeOn-time82%
Turkish AirlinesCheapest$119Average$239FlexibilityNo cancel feeOn-time77%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.