Cheap Flights from Istanbul to Sofia from €41

Frequently Asked Questions

• What are the cheapest flights from Istanbul to Sofia (IST-SOF)?

  Based on Trip.com data, Pegasus Airlines offers one-way fares as low as €41 on Cheapest nonstop routes (e.g. SAW to SOF on Thu, May 14), while Pegasus Airlines offers Cheapest nonstop round-trips from €88 departing on Sat, May 9 and returning on Mon, May 11.

• Which airlines offer direct flights from Istanbul to Sofia?

  At the moment, you can catch a nonstop flight from Istanbul to Sofia with the following airlines, including: Turkish Airlines Pegasus Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long does it take to fly from Istanbul (IST) to Sofia (SOF) and what is the distance?

  It takes around 1 hour 17 minutes to fly from Istanbul (IST) to Sofia (SOF).

• When is the best time to book flights from Istanbul to Sofia?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Istanbul to Sofia is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Istanbul to Sofia?

  Based on Trip.com data in the past 4 weeks, there is 30 flight per week flying from Istanbul to Sofia. You can check the weekly schedule for popular airlines on this route below: Turkish Airlines: S/M/T/W/T/F/S -- TK1031 (13:56)

• How can I find the best deals on flights from Istanbul to Sofia?

  To find best deals on flights from Istanbul to Sofia, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, May 14, with one-way flights priced at just €41.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Pegasus Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Sofia travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Istanbul (IST) to Sofia (SOF) the cheapest?

  The cheapest months to fly from Istanbul to Sofia is October, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Istanbul to Sofia on?

  After crunching the numbers on our May flight calendar, it's currently cheapest to fly from Istanbul to Sofia on May 28, 2026 with Pegasus Airlines, with prices starting at €40.

• Which airports can I fly to for Sofia from Istanbul?

  You can land at any one of the following hubs in Sofia, with Istanbul Airport to Sofia International Airport (IST-SOF) is by far the most common option on this route: Sofia International Airport (SOF).

• Is there any time difference between Istanbul and Sofia?

  The time difference between Sofia and Istanbul is 1h.

• How do I change or cancel my ticket from Istanbul to Sofia?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.