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Cheap flights from Sofia to Istanbul Airport from £68

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 25/5. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — IST
23 May — 30 May1
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 23 April 2026.

Sat 6/616:00
SOF
-
IST
1 stop23h 00m
Air Serbia
Mon 8/604:30
IST
-
SOF
1 stop11h 00m
Air Serbia
Deal found 20/4£138
Tue 19/516:00
SOF
-
IST
1 stop23h 00m
Air Serbia
Thu 21/504:30
IST
-
SOF
1 stop22h 30m
Air Serbia
Deal found 20/4£139
Tue 2/616:00
SOF
-
IST
1 stop23h 00m
Air Serbia
Tue 9/604:30
IST
-
SOF
1 stop11h 00m
Air Serbia
Deal found 21/4£140
Sat 6/620:55
SOF
-
IST
1 stop11h 50m
Multiple Airlines
Sat 13/613:45
IST
-
SOF
Nonstop1h 15m
Multiple Airlines
Deal found 22/4£141
Wed 24/615:00
SOF
-
IST
1 stop22h 10m
Multiple Airlines
Mon 6/709:25
IST
-
SOF
1 stop5h 35m
Multiple Airlines
Deal found 22/4£147
Thu 25/606:00
SOF
-
IST
1 stop13h 35m
Multiple Airlines
Sun 5/709:25
IST
-
SOF
1 stop5h 40m
Multiple Airlines
Deal found 22/4£152
Thu 4/615:50
SOF
-
IST
Nonstop1h 30m
Turkish Airlines
Thu 11/613:45
IST
-
SOF
Nonstop1h 15m
Turkish Airlines
Deal found 20/4£155
Wed 20/516:00
SOF
-
IST
1 stop23h 55m
Air Serbia
Tue 9/604:30
IST
-
SOF
1 stop11h 00m
Air Serbia
Deal found 23/4£159
Wed 3/616:00
SOF
-
IST
1 stop11h 40m
Air Serbia
Wed 10/604:30
IST
-
SOF
1 stop11h 00m
Air Serbia
Deal found 19/4£160
Sat 6/621:05
SOF
-
IST
Nonstop1h 30m
Turkish Airlines
Sat 13/613:45
IST
-
SOF
Nonstop1h 15m
Turkish Airlines
Deal found 22/4£161
Thu 4/610:55
SOF
-
IST
1 stop9h 00m
Multiple Airlines
Thu 11/613:45
IST
-
SOF
Nonstop1h 15m
Multiple Airlines
Deal found 20/4£167

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 23 April 2026.

Round-trip from

£138

One-way from

£68

Popular in

February

Cheapest in

October

Average price

£115

Good round-trip deal

£532 or less

Good one-way deal

£259 or less
Air Serbia
  • Air Serbia
  • 6/6-8/6
  • 2 total stops
  • 34h 00m total
  • Sofia to Istanbul
Search Deals
Air Serbia
  • Air Serbia
  • 25/5
  • 1 total stop
  • 23h 55m total
  • Sofia to Istanbul
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£5 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£2 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Sofia to Istanbul.
Search Deals
Price to beat on a one-way flight from Sofia to Istanbul.
Search Deals

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 23 April 2026.
Use the filters below to find and compare flights from Sofia to Istanbul Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Sat 6/6

16:00-15:00

1 stop23h 00m

Istanbul

Mon 8/6

04:30-15:30

1 stop11h 00m

£139

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Tue 19/5

16:00-15:00

1 stop23h 00m

Istanbul

Thu 21/5

04:30-03:00

1 stop22h 30m

£139

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Sat 23/5

16:00-03:40

1 stop11h 40m

Istanbul

Wed 10/6

04:30-15:30

1 stop11h 00m

£139

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Tue 2/6

16:00-03:40

1 stop11h 40m

Istanbul

Tue 9/6

04:30-15:30

1 stop11h 00m

£140

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Tue 1/9

16:00-15:00

1 stop23h 00m

Istanbul

Fri 4/9

15:45-03:00

1 stop11h 15m

£140

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Thu 10/9

16:00-15:00

1 stop23h 00m

Istanbul

Sun 13/9

04:30-03:00

1 stop22h 30m

£140

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Wed 3/6

16:00-15:55

1 stop23h 55m

Istanbul

Wed 10/6

04:30-15:30

1 stop11h 00m

£140

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Sat 6/6

20:55-08:45

1 stop11h 50m

Istanbul

Sat 13/6

13:45-15:00

Nonstop1h 15m

£141
Fastest return journey

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Wed 24/6

15:50-17:20

Nonstop1h 30m

Istanbul

Mon 6/7

13:45-15:00

Nonstop1h 15m

£155

SofiaIstanbul

SOF - IST

SOFIST

Sofia

Thu 4/6

10:55-19:55

1 stop9h 00m

Istanbul

Thu 11/6

13:45-15:00

Nonstop1h 15m

£167

Flights are sorted by cheapest return flights first.

Deals found on 18/4

Showing 1-10 of 18 resultsSorted by cheapest first
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 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

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 £84). Flying from Sofia to Istanbul Airport in February is currently the most expensive (average of £120). 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 23 April 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Sofia to Istanbul Airport as you normally would.

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 23 April 2026.
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.
Turkish Airlines
7.4
Good
4,326 reviews
Check prices

Entertainment

7.5

Crew

7.8

Comfort

7.3

Food

7.5

Boarding

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Scout,Mar 2026

UBN - IST

The boarding process is definitely not as smooth as some Asian airlines. But Turkish Airlines pleasantly surprised me with the quality of food - even vegetarian options - and the staff were so attentive and eager to please. Not the most comfortable seats, but luckily it was not a full flight and the staff were happy for us to spread and be comfortable.
Turkish Airlines
7.4
Good
4,326 reviews
Turkish Airlines
7.4
Good
4,326 reviews
Check prices

Entertainment

7.5

Crew

7.8

Comfort

7.3

Food

7.5

Boarding

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Scout,Mar 2026

UBN - IST

The boarding process is definitely not as smooth as some Asian airlines. But Turkish Airlines pleasantly surprised me with the quality of food - even vegetarian options - and the staff were so attentive and eager to please. Not the most comfortable seats, but luckily it was not a full flight and the staff were happy for us to spread and be comfortable.
Pegasus Airlines
6.7
Okay
640 reviews
Turkish Airlines
7.4
Good
4,326 reviews
Check prices

Entertainment

7.5

Crew

7.8

Comfort

7.3

Food

7.5

Boarding

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Scout,Mar 2026

UBN - IST

The boarding process is definitely not as smooth as some Asian airlines. But Turkish Airlines pleasantly surprised me with the quality of food - even vegetarian options - and the staff were so attentive and eager to please. Not the most comfortable seats, but luckily it was not a full flight and the staff were happy for us to spread and be comfortable.

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 8 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?

    Air Serbia can get you from Sofia to Istanbul Airport in just under 23h. Your travel time can differ by up to . The distance between Sofia and Istanbul Airport is about 291 mi.

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

    Currently priced at £64, 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 £102. You may be able to fly from Sofia to Istanbul Airport for 37% 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 Lufthansa (100%), Turkish Airlines (81%) and IndiGo (74%).

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

    The cheapest flight price from Sofia to Istanbul Airport is £184. On average you can expect to pay £511. The most popular route, (Sofia - Istanbul), can usually be booked for £87.

  • 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 £84). Flying from Sofia to Istanbul Airport in February is currently the most expensive (average of £120). 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

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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 858,174 searches. Data last updated 23 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Pegasus AirlinesCheapest£64Average£86FlexibilityNo cancel feeOn-time82%
Search Pegasus Airlines flights
Turkish AirlinesCheapest£102Average£142FlexibilityNo 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.

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