Flying from Sofia to Istanbul can be expensive. Our search helps you compare cheap flights, airfare deals, and flight tickets across airlines and agencies so you can book at the best price.
We scan trusted travel agencies and airline booking systems for the route Sofia - Istanbul (SOF - IST). We do not sell tickets or add fees - you choose where to buy.
Airfares vary by date, time, and airport. Use filters to find the best option by departure/arrival time, number of stops, airline or alliance, and booking channel.
If your dates are flexible, check the low-fare calendar to find the cheapest days. Booking round-trip in one order often reduces fees, and prices usually rise as departure approaches.
We also recommend you to look through the prices for return tickets from Istanbul to Sofia.
Airfares found by our users in the past 24 hours
The price for these dates could change. Use search to get the best price.
Average round-trip airfares from Sofia to Istanbul by months
| Month | Round-Trip |
|---|---|
| January 2026 | 31.01 - 01.02from $150 |
| February 2026 | 13.02 - 17.02from $83 |
| March 2026 | 28.03 - 13.04from $146 |
| April 2026 | 13.04 - 19.04from $77 |
| May 2026 | 01.05 - 08.05from $111 |
| June 2026 | 02.06 - 19.06from $105 |
| July 2026 | 04.07 - 14.08from $105 |
| August 2026 | 13.08 - 16.08from $115 |
| September 2026 | find now |
| October 2026 | find now |
| November 2026 | find now |
| December 2026 | find now |
Prices shown are based on searches from the last few days. Ticket prices can change and depend on availability at the time of booking.
Airlines are flying from Sofia to Istanbul
| Air Fiji |
Popular flights from Sofia
Frequently asked questions about flights from Sofia to Istanbul
How long does the flight from Sofia to Istanbul take?
Flight duration from Sofia to Istanbul varies by route, airline, and number of stops. Direct flights are faster; connecting flights may take longer. Use our search to compare options and see exact durations for your dates.
Are there direct flights from Sofia to Istanbul?
Availability of direct flights from Sofia to Istanbul depends on the route and season. Use our search and filter by "Direct" or "Non-stop" to see only direct options. We compare offers from many airlines and agencies.
Which airlines fly from Sofia to Istanbul?
Several airlines may operate flights from Sofia to Istanbul. On this page you can see airlines that serve this route. Our search compares prices across airlines and agencies so you can choose the best offer. We do not sell tickets; you book directly with the airline or agency.
What is the cheapest month to fly from Sofia to Istanbul?
Prices from Sofia to Istanbul vary by month and demand. On this page you can see average round-trip prices by month. Use the low-fare calendar and monthly table to find the cheapest dates. Booking in advance and avoiding peak seasons often helps get the best price.