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$64+ Cheap flights from Sofia (SOF) to Istanbul (IST)

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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — IST
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Sofia to Istanbul are usually found in March or January, booked 34 days in advance, depart on a Wednesday or Tuesday and return on a Friday

Cheap flight deals from Sofia to Istanbul

Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to Istanbul (IST). 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

$120
(Booking.com)

One-way from

$64
(Kiwi.com)

Popular in

November

Cheapest in

March

Average price

$146

Good round-trip deal

$603 or less

Good one-way deal

$216 or less
From Sofia to Istanbul
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One-way flight from Sofia to Istanbul
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Highest demand for flights based on searches. 18% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($10 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 Sofia to Istanbul.
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Price to beat on a one-way flight from Sofia to Istanbul.
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Find flight deals from Sofia to Istanbul

Cheapest flights from Sofia to Istanbul
Explore the most affordable flight options available from Sofia to Istanbul. 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.
Thu 11/69:40 pmSOF - IST
Nonstop1h 35mTurkish Airlines
Mon 11/108:30 pmIST - SOF
Nonstop1h 20mTurkish Airlines
Deal found 9/10$120
This Turkish Airlines 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:05 amSOF - IST
Nonstop1h 30mTurkish Airlines
Tue 12/162:50 pmIST - SOF
Nonstop1h 20mTurkish Airlines
Deal found 9/11$133
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 11/66:00 amSOF - IST
1 stop14h 05mMultiple Airlines
Mon 11/102:50 pmIST - SOF
Nonstop1h 20mMultiple Airlines
Deal found 9/10$138
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2710:05 amSOF - IST
Nonstop1h 30mTurkish Airlines
Thu 10/302:50 pmIST - SOF
Nonstop1h 20mTurkish Airlines
Deal found 9/11$146
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/93:35 pmSOF - IST
Nonstop1h 35mTurkish Airlines
Thu 10/167:20 amIST - SOF
Nonstop1h 15mTurkish Airlines
Deal found 9/11$148
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:05 amSOF - IST
Nonstop1h 30mTurkish Airlines
Thu 10/302:50 pmIST - SOF
Nonstop1h 20mTurkish Airlines
Deal found 9/10$152
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.
Sat 10/116:10 amSOF - IST
1 stop13h 15mMultiple Airlines
Sat 10/187:20 amIST - SOF
Nonstop1h 15mMultiple Airlines
Deal found 9/11$161
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/314:00 pmSOF - IST
1 stop11h 25mMultiple Airlines
Mon 11/38:30 pmIST - SOF
Nonstop1h 20mMultiple Airlines
Deal found 9/11$166
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2610:05 amSOF - IST
Nonstop1h 30mTurkish Airlines
Sun 11/22:50 pmIST - SOF
Nonstop1h 20mTurkish Airlines
Deal found 9/11$169
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 10/910:50 amSOF - IST
1 stop17h 00mMultiple Airlines
Thu 10/167:20 amIST - SOF
Nonstop1h 15mMultiple Airlines
Deal found 9/11$171

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sofia to Istanbul 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 Sofia to Istanbul Airport that are best for you.

Fly from

Sofia

Fly to

Istanbul

Route

Depart

Return

Price

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Fri 3/6

10:05 am-12:35 pm

Nonstop1h 30m

Istanbul

Wed 3/11

2:50 pm-3:10 pm

Nonstop1h 20m

$123

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Fri 12/12

4:00 pm-6:30 pm

Nonstop1h 30m

Istanbul

Tue 12/16

2:50 pm-3:10 pm

Nonstop1h 20m

$133

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Thu 10/9

3:35 pm-5:10 pm

Nonstop1h 35m

Istanbul

Thu 10/16

7:20 am-8:35 am

Nonstop1h 15m

$148

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Wed 10/29

10:05 am-12:35 pm

Nonstop1h 30m

Istanbul

Thu 10/30

2:50 pm-3:10 pm

Nonstop1h 20m

$152

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Thu 10/9

1:30 pm-9:55 pm

1 stop8h 25m

Istanbul

Mon 10/13

1:20 pm-2:45 pm

Nonstop1h 25m

$158

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Mon 10/27

10:05 am-9:00 pm

1 stop9h 55m

Istanbul

Thu 10/30

2:50 pm-3:10 pm

Nonstop1h 20m

$169

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Fri 1/30

4:00 pm-6:30 pm

Nonstop1h 30m

Istanbul

Mon 2/2

2:50 pm-3:10 pm

Nonstop1h 20m

$169

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Thu 10/9

10:50 am-3:50 am

1 stop17h 00m

Istanbul

Thu 10/16

7:20 am-8:35 am

Nonstop1h 15m

$171

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Mon 12/1

4:00 pm-6:30 pm

Nonstop1h 30m

$80

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Sat 10/18

3:35 pm-5:10 pm

Nonstop1h 35m

$80

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 18 results
1
2

Best time to book a flight from Sofia to Istanbul

Have a flexible travel schedule? Discover the best time to fly to Istanbul from Sofia 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 Sofia to Istanbul Airport

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

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

Booking 34 days in advance of your planned departure date is, on average, the best time to get cheap flights from Sofia to Istanbul Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, October is the cheapest month in which you can book a flight from Sofia to Istanbul Airport (average of $916). Flying from Sofia to Istanbul Airport in June is currently the most expensive (average of $1,359). 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 SOF to IST?

Find hourly flight availability from Sofia to Istanbul. 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 optimal to fly from Sofia to Istanbul Airport at noon. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the afternoon.

Reviews of airlines servicing Istanbul

Get insights into the airlines that provide service to Istanbul. 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 Istanbul. Reviews last updated September 11, 2025.
Get a feel of what it's like to fly with Turkish Airlines and Pegasus Airlines from Sofia to Istanbul Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Turkish Airlines
7.3
Good
3,968 reviews

Comfort

7.3

Entertainment

7.4

Overall

7.3

Food

7.4

Crew

7.7

Boarding

7.3

Reviews

1 / 20
2.0
Mediocre

Brian,Jul 2025

SEA - IST

Horrible check-in experience in Seattle. Was actually yelled at by a customer service rep and then he intentionally would put us in the back row to make sure our seats would not recline. When I complained to customer service they told me they did not find any issues with how we were treated. The sinks did not drain in the bathroom during the flight and my in-flight entertainment never worked during a 12 hour flight. They said they would reset 3 times but never did. Would never fly them again.
Turkish Airlines
7.3
Good
3,968 reviews
Turkish Airlines
7.3
Good
3,968 reviews

Comfort

7.3

Entertainment

7.4

Overall

7.3

Food

7.4

Crew

7.7

Boarding

7.3

Reviews

1 / 20
2.0
Mediocre

Brian,Jul 2025

SEA - IST

Horrible check-in experience in Seattle. Was actually yelled at by a customer service rep and then he intentionally would put us in the back row to make sure our seats would not recline. When I complained to customer service they told me they did not find any issues with how we were treated. The sinks did not drain in the bathroom during the flight and my in-flight entertainment never worked during a 12 hour flight. They said they would reset 3 times but never did. Would never fly them again.
Pegasus Airlines
6.8
Okay
639 reviews
Turkish Airlines
7.3
Good
3,968 reviews

Comfort

7.3

Entertainment

7.4

Overall

7.3

Food

7.4

Crew

7.7

Boarding

7.3

Reviews

1 / 20
2.0
Mediocre

Brian,Jul 2025

SEA - IST

Horrible check-in experience in Seattle. Was actually yelled at by a customer service rep and then he intentionally would put us in the back row to make sure our seats would not recline. When I complained to customer service they told me they did not find any issues with how we were treated. The sinks did not drain in the bathroom during the flight and my in-flight entertainment never worked during a 12 hour flight. They said they would reset 3 times but never did. Would never fly them again.

Related info for your journey

Find useful and relevant information for your journey from Sofia to Istanbul. 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 from for flights from Sofia to Istanbul?

    Most people fly from Sofia (SOF) if they book a flight from Sofia to Istanbul. On average, Sofia has 4 outbound flights to 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 Sofia to Istanbul Airport?

    Turkish Airlines can get you from Sofia to Istanbul Airport in just under 1h 30m. Your travel time will be generally consistent. The distance from Sofia to Istanbul Airport is about 291 mi. All flights are typically nonstop.

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

    Currently priced at $84, Pegasus Airlines will fly you from Sofia to Istanbul Airport and back. In addition to Pegasus Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Turkish Airlines for as low as $136. Users have found that Pegasus Airlines is 40% cheaper than the other options available to this destination.

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

    No one likes to see their flight delayed. When booking a flight from Sofia to Istanbul Airport consider choosing Egyptair (85%), Royal Jordanian (85%) or Singapore Airlines (85%) as they are the most reliable in getting you off to your destination on time.

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

    The cheapest flight price from Sofia to Istanbul Airport is $128. On average you can expect to pay $1,443. The most popular route, (Sofia - Istanbul), can usually be booked for $91.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sofia to Istanbul 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 Sofia to Istanbul Airport?

    Currently, October is the cheapest month in which you can book a flight from Sofia to Istanbul Airport (average of $916). Flying from Sofia to Istanbul Airport in June is currently the most expensive (average of $1,359). 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

Traveling to a place near Istanbul Airport?

Book flights to Istanbul Airport if you plan to visit one of these locations
Yalova

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Top 2 airlines flying from Sofia to Istanbul

Discover the top 2 airlines that operate flights from Sofia to Istanbul. 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$84Average$109FlexibilityNo cancel feeOn-time82%
Turkish AirlinesCheapest$136Average$247FlexibilityNo cancel feeOn-time77%

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