Cheap flights from Sofia to Istanbul Airport from £53

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 18/12. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — IST
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sofia to Istanbul

Enter your travel dates to find the best prices.

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 12 December 2025.

Wed 31/1216:00SOF - IST
1 stop11h 10mAir Serbia
Fri 2/105:20IST - SOF
1 stop22h 45mAir Serbia
Deal found 10/12£182
Fri 12/1216:00SOF - IST
Nonstop1h 30mTurkish Airlines
Tue 16/1220:30IST - SOF
Nonstop1h 20mTurkish Airlines
Deal found 10/12£229
Fri 12/1205:00SOF - IST
1 stop9h 55mAir Serbia
Tue 16/1217:35IST - SOF
1 stop22h 55mAir Serbia
Deal found 11/12£247
Fri 12/1209:35SOF - IST
Nonstop1h 30mTurkish Airlines
Sun 14/1214:50IST - SOF
Nonstop1h 20mTurkish Airlines
Deal found 11/12£703

Find 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 12 December 2025.

Round-trip from

£104

One-way from

£53

Popular in

April

Cheapest in

January

Average price

£101

Good round-trip deal

£665 or less

Good one-way deal

£265 or less
Turkish Airlines
  • Turkish Airlines
  • 8/1-15/1
  • Nonstop
  • 2h 50m total
  • Sofia to Istanbul
18/12
  • 18/12
  • 1 total stop
  • 6h 20m total
  • Sofia to Istanbul
Highest demand for flights based on searches. 3% potential increase in price (£2 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£3 potential savings vs. average return price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from Sofia to Istanbul.
Price to beat on a one-way flight from Sofia to Istanbul.

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 12 December 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

Thu 8/1

09:35-12:05

Nonstop1h 30m

Istanbul

Thu 15/1

20:30-20:50

Nonstop1h 20m

£104

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Sat 14/2

09:35-12:05

Nonstop1h 30m

Istanbul

Sun 22/2

20:30-20:50

Nonstop1h 20m

£106

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Sat 2/5

15:50-17:20

Nonstop1h 30m

Istanbul

Wed 6/5

18:55-20:15

Nonstop1h 20m

£106

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Thu 5/2

16:00-18:30

Nonstop1h 30m

Istanbul

Mon 9/2

20:30-20:50

Nonstop1h 20m

£128

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Thu 8/1

16:00-04:10

1 stop11h 10m

Istanbul

Thu 15/1

14:50-15:10

Nonstop1h 20m

£131

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Fri 30/1

09:35-12:05

Nonstop1h 30m

Istanbul

Mon 2/2

14:50-15:10

Nonstop1h 20m

£140

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Fri 23/1

16:00-18:30

Nonstop1h 30m

Istanbul

Sun 25/1

20:30-20:50

Nonstop1h 20m

£145

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Mon 11/5

05:00-15:55

1 stop10h 55m

Istanbul

Tue 12/5

04:20-15:35

1 stop11h 15m

£151

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Sat 2/5

05:00-15:55

1 stop10h 55m

Istanbul

Wed 6/5

15:40-02:55

1 stop11h 15m

£152

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Thu 18/12

12:10-19:30

1 stop6h 20m

£60

Flights are sorted by cheapest return flights first.

Deals found on 10/12

Showing 1-10 of 21 results
1
2
3

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 return 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 return flight from Sofia to Istanbul. Price data was last updated on 5 December 2025.

Booking 31 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 £53). Flying from Sofia to Istanbul Airport in April is currently the most expensive (average of £75). 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 12 December 2025.

It’s typically best to fly out from Sofia to Istanbul Airport at midday. Doing so could potentially save you 86% on the flight price compared to flying in the evening, which is usually more expensive.

How much does it cost for a return flight from Sofia to Istanbul Airport?

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 12 December 2025.
See what other customers who have flown with Turkish Airlines and Pegasus Airlines from Sofia to Istanbul Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.3

Boarding

7.3

Food

7.4

Crew

7.8

Entertainment

7.4

Overall

7.3

Reviews

1 / 20
6.0
Good

Chandra,Nov 2025

ATL - IST

TV was not available in Indigo from Istanbul to Delhi. Seat was not moving back. It was jammed.

Comfort

7.3

Boarding

7.3

Food

7.4

Crew

7.8

Entertainment

7.4

Overall

7.3

Reviews

1 / 20
6.0
Good

Chandra,Nov 2025

ATL - IST

TV was not available in Indigo from Istanbul to Delhi. Seat was not moving back. It was jammed.

Comfort

7.3

Boarding

7.3

Food

7.4

Crew

7.8

Entertainment

7.4

Overall

7.3

Reviews

1 / 20
6.0
Good

Chandra,Nov 2025

ATL - IST

TV was not available in Indigo from Istanbul to Delhi. Seat was not moving back. It was jammed.

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?

    Sofia (SOF) is the airport you will fly out of if you book a flight from Sofia to Istanbul. You should not have trouble finding flights to Istanbul from Sofia; the airport handles an average of 5 outbound flights to Istanbul per day. You should also have plenty of airline options to choose from since 2 airlines have flights from the Sofia airport to Istanbul. It is only a 4.2 mi journey to Sofia (SOF) 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 between Sofia and Istanbul Airport is about 291 mi. Most flights are nonstop.

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

    Currently priced at £65, 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 £78. You may be able to fly from Sofia to Istanbul Airport for 33% less than the average price by searching for these airlines.

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

    The top 3 most reliable airlines when flying from Sofia to Istanbul Airport are Turkish Airlines (72%), IndiGo (72%) and Royal Jordanian (63%).

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

    The cheapest flight price from Sofia to Istanbul Airport is £163. On average you can expect to pay £520. The most popular route, (Sofia - Istanbul), can usually be booked for £122.

  • 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 holiday 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 £53). Flying from Sofia to Istanbul Airport in April is currently the most expensive (average of £75). 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

Travelling to a place near Istanbul Airport?

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

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.

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 858,174 searches. Data last updated 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Pegasus AirlinesCheapest£65Average£83FlexibilityNo cancel feeOn-time82%
Search Pegasus Airlines flights
Turkish AirlinesCheapest£78Average£141FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Sofia to Istanbul?

Cheapflights makes it easy to find Sofia to Istanbul flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Sofia to Istanbul?

Cheapflights simply makes it quick and affordable to book flights from Sofia to Istanbul by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Sofia to Istanbul with no change fees?

Yes, we can. To see specific flights from Sofia to Istanbul with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Sofia to Istanbul become cheaper?

Yes, Cheapflights offers price alerts on Sofia to Istanbul flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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.