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$65+ 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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
IST — SOF
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Istanbul to Sofia are usually found in October or September, booked 64 days in advance, depart on a Friday or Tuesday and return on a Wednesday

Cheap 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 September 11, 2025.

Round-trip from

$128
(Booking.com)

One-way from

$65
(Booking.com)

Popular in

November

Cheapest in

October

Average price

$147

Good round-trip deal

$754 or less

Good one-way deal

$74 or less
From Istanbul to Sofia
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One-way flight from Istanbul to Sofia
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Istanbul to Sofia.
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Price to beat on a one-way flight from Istanbul to Sofia.
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Find 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 September 11, 2025.

This Booking.com deal was found by Cheapflights users on 9/10. 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.
Tue 10/211:20 pmIST - SOF
Nonstop1h 25mTurkish Airlines
Thu 10/233:35 pmSOF - IST
Nonstop1h 35mTurkish Airlines
Deal found 9/10$128
This Turkish Airlines deal was found by Cheapflights users on 9/10. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/151:20 pmIST - SOF
Nonstop1h 25mTurkish Airlines
Thu 10/233:35 pmSOF - IST
Nonstop1h 35mTurkish Airlines
Deal found 9/10$141
This Booking.com deal was found by Cheapflights users on 9/9. 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 11/12:50 pmIST - SOF
Nonstop1h 20mMultiple Airlines
Sun 11/28:20 pmSOF - IST
1 stop12h 10mMultiple Airlines
Deal found 9/9$150
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/219:10 amIST - SOF
1 stop14h 05mMultiple Airlines
Thu 10/233:35 pmSOF - IST
Nonstop1h 35mMultiple Airlines
Deal found 9/10$163
This SmartFares deal was found by Cheapflights users on 9/10. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/91:20 pmIST - SOF
Nonstop1h 25mTurkish Airlines
Sun 10/123:35 pmSOF - IST
Nonstop1h 35mTurkish Airlines
Deal found 9/10$168
This Mytrip deal was found by Cheapflights users on 9/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:00 pmIST - SOF
Nonstop1h 25mMultiple Airlines
Mon 10/2710:05 amSOF - IST
1 stop9h 55mMultiple Airlines
Deal found 9/9$169
This Air Serbia deal was found by Cheapflights users on 9/9. 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.
Thu 10/234:35 pmIST - SOF
1 stop23h 00mAir Serbia
Sun 10/264:00 pmSOF - IST
1 stop11h 25mAir Serbia
Deal found 9/9$177
This Mytrip deal was found by Cheapflights users on 9/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:20 amIST - SOF
Nonstop1h 15mMultiple Airlines
Sun 10/269:00 pmSOF - IST
1 stop12h 35mMultiple Airlines
Deal found 9/11$181
This Turkish Airlines deal was found by Cheapflights users on 9/10. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:00 pmIST - SOF
Nonstop1h 25mTurkish Airlines
Sun 10/53:35 pmSOF - IST
Nonstop1h 35mTurkish Airlines
Deal found 9/10$183
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/91:20 pmIST - SOF
Nonstop1h 25mMultiple Airlines
Sun 10/129:25 amSOF - IST
2 stops18h 25mMultiple Airlines
Deal found 9/10$187

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 September 11, 2025.
Use the filters below to find and compare flights from Istanbul Airport to Sofia that are best for you.

Fly from

Istanbul

Fly to

Sofia

Route

Depart

Return

Price

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Tue 10/21

1:20 pm-2:45 pm

Nonstop1h 25m

Sofia

Thu 10/23

3:35 pm-5:10 pm

Nonstop1h 35m

$128

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Wed 10/15

1:20 pm-2:45 pm

Nonstop1h 25m

Sofia

Thu 10/23

3:35 pm-5:10 pm

Nonstop1h 35m

$141

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Sat 11/1

2:50 pm-3:10 pm

Nonstop1h 20m

Sofia

Sun 11/2

8:20 pm-9:30 am

1 stop12h 10m

$150

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Tue 10/21

9:10 am-11:15 pm

1 stop14h 05m

Sofia

Thu 10/23

3:35 pm-5:10 pm

Nonstop1h 35m

$163

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Sun 11/9

4:40 pm-3:00 am

1 stop11h 20m

Sofia

Sat 11/15

5:00 am-4:50 pm

1 stop10h 50m

$177

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Thu 10/23

4:35 pm-3:35 pm

1 stop23h 00m

Sofia

Sun 10/26

4:00 pm-4:25 am

1 stop11h 25m

$177

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Thu 10/23

4:20 am-3:35 pm

1 stop11h 15m

Sofia

Mon 10/27

4:00 pm-4:50 pm

1 stop23h 50m

$178

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Thu 10/30

2:50 pm-3:10 pm

Nonstop1h 20m

$65

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Fri 10/31

8:30 pm-8:50 pm

Nonstop1h 20m

$65

IstanbulSofia

IST - SOF

ISTSOF

Istanbul

Wed 2/18

8:30 pm-8:50 pm

Nonstop1h 20m

$65

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 18 results
1
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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?

Use this chart to determine the optimal time to book a round-trip flight from Istanbul to Sofia. Price data was last updated on August 29, 2025.

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 64 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, November is the cheapest month in which you can book a flight from Istanbul Airport to Sofia (average of $632). Flying from Istanbul Airport to Sofia in June is currently the most expensive (average of $1,185). 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 September 11, 2025.

It’s typically best to fly out from Istanbul Airport to Sofia in the afternoon. Doing so could potentially save you 55% on the flight price compared to flying in the evening, 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 September 11, 2025.
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
7.3
Good
3,968 reviews

Boarding

7.3

Crew

7.7

Entertainment

7.4

Overall

7.3

Comfort

7.3

Food

7.4

Reviews

1 / 20
4.0
Okay

Leslie,Feb 2025

IST - LAX

Food and staff were nice but difficulty with WIFI, console sound not working. X-cover insurance a scam. Denying purchase of insurance even with proof. Ridiculous.
Turkish Airlines
7.3
Good
3,968 reviews
Turkish Airlines
7.3
Good
3,968 reviews

Boarding

7.3

Crew

7.7

Entertainment

7.4

Overall

7.3

Comfort

7.3

Food

7.4

Reviews

1 / 20
4.0
Okay

Leslie,Feb 2025

IST - LAX

Food and staff were nice but difficulty with WIFI, console sound not working. X-cover insurance a scam. Denying purchase of insurance even with proof. Ridiculous.
Pegasus Airlines
6.8
Okay
639 reviews
Turkish Airlines
7.3
Good
3,968 reviews

Boarding

7.3

Crew

7.7

Entertainment

7.4

Overall

7.3

Comfort

7.3

Food

7.4

Reviews

1 / 20
4.0
Okay

Leslie,Feb 2025

IST - LAX

Food and staff were nice but difficulty with WIFI, console sound not working. X-cover insurance a scam. Denying purchase of insurance even with proof. Ridiculous.

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 5 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?

    Turkish Airlines and Air Serbia can get you from Istanbul Airport to Sofia in just under 1h 25m. Your travel time can differ by up to 9h 55m. Airlines will cover a distance of 291 mi. This flight may include one or multiple stops.

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

    According to our current data, Pegasus Airlines ($88), 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 53% 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 Royal Jordanian (89%), Turkish Airlines (81%) or IndiGo (81%) 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 $66. On average you can expect to pay $431. The most popular route, (Istanbul - Sofia), can usually be booked for $141.

  • 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, November is the cheapest month in which you can book a flight from Istanbul Airport to Sofia (average of $632). Flying from Istanbul Airport to Sofia in June is currently the most expensive (average of $1,185). 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

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Complete your trip

Complete your trip to Sofia by adding a car rental and/or hotel reservation to your travel itinerary.
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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Pegasus AirlinesCheapest$88Average$131FlexibilityNo cancel feeOn-time82%
Turkish AirlinesCheapest$119Average$250FlexibilityNo cancel feeOn-time77%

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