Cheap flights from Istanbul to Sofia from $70

The cheapest month to fly to Sofia from Istanbul is in December. Flight prices, which tend to average around $112, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of December, then book flights to Sofia from Istanbul during January instead. Flights to Sofia in January, while not as cheap as those in December, still average around $124.

According to our data, Friday is the cheapest day to fly to Sofia from Istanbul. The lowest ticket price found for a Friday departure recently was $156. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Istanbul to Sofia on a Saturday will generally be more expensive and average around $325. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the afternoon is the cheapest time of day to fly from Istanbul to Sofia when you can find flight prices for as low as $122. Flying to Sofia in the afternoon is an ideal time because this is during off-peak travel hours. At noon is when there is more demand to fly to Sofia, so prices are often more expensive at around $245 per ticket.

Fly from Istanbul Sabiha Gokcen to Sofia for the best Istanbul - Sofia flight prices

You are more likely to see cheaper flights to Sofia from Istanbul when booking weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $154 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from Istanbul for as low as $116 on momondo.

There are 3 cabin classes available to choose from on Istanbul to Sofia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 12% of flights between Istanbul and Sofia have experienced a delay on any given week. The average delay length over the past 12 months has been 92 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, Turkish Airlines have had the least number of delays on this route over the last 12 months; with about 12% of their flights experiencing any sort of delay.

As of March 2026, there are 5 flights per day flying from Istanbul to Sofia. The most common time of day flights depart is 8:00PM, with 40% of flights taking off in the evening.

35 flights are operational weekly from Istanbul to Sofia as of March 2026. The most popular departure day for this route is Tue, with 26% of flights per week taking off on this day.