Airlines operating flights from Sofia to Istanbul

Choose from 1 airlines flying from Sofia to Istanbul, including Pegasus Airlines, and . Pegasus Airlines currently offers the cheapest ticket on this route.
Pegasus Airlines logo Pegasus Airlines
Airlines are determined based on actual purchased flight tickets from Sofia to Istanbul according to previous 12 months data from Trip.com.

Find the cheapest direct flight options from Sofia to Istanbul over the next three months. Book one-way tickets from €38 and round-trip tickets from €83.

Displayed flight fares from Sofia to Istanbul are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight details for Sofia to Istanbul

The distance between Sofia and Istanbul is 494.78km. It takes around 1 hour 28 minutes on average to fly from Sofia to Istanbul. Based on Trip.com's data, travel demand peaks in January. The off-season for travel is November.

Cheapest one-way flight price€38
Cheapest return ticket price€83
Off-season travel monthNovember
Peak season for travelJanuary
Flight distance494.78km
Average flight time1 hour 28 minutes
Popular airlinePegasus Airlines
Flight statistics for the Sofia–Istanbul route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com price insights on flights from Sofia to Istanbul

What is the cheapest month for one-way flights from Sofia to Istanbul?

The average one way ticket price paid by Trip.com users from Sofia to Istanbul in each month over the past 12 months.

Based on Trip.com data, the cheapest month to fly from Sofia to Istanbul is June, with an average price of €91. The most expensive month is usually November, with average prices reaching €118.

€118
€105
€91
€78
    Cheapest
  • €115
    Mar
  • €97
    Apr
  • €103
    May
  • €91
    Jun
  • €93
    Jul
  • €111
    Aug
  • €117
    Sep
  • €99
    Oct
  • €118
    Nov
  • €112
    Dec
  • €115
    Jan
  • €96
    Feb

What is the cheapest month for return flights from Sofia to Istanbul?

Average price of return flights from Sofia to Istanbul purchased by Trip.com users by month over the past 12 months

Based on Trip.com's historical data, May is often the cheapest month for fly from Sofia to Istanbul, with an average price of €122. January is usually the most expensive period, with prices averaging as high as €330.

€330
€226
€122
€18
    Cheapest
  • €172
    Mar
  • €297
    Apr
  • €122
    May
  • €140
    Jun
  • €177
    Jul
  • €227
    Aug
  • €175
    Sep
  • €269
    Oct
  • €207
    Nov
  • €278
    Dec
  • €330
    Jan
  • €193
    Feb

Which day of the week is cheapest to fly from Sofia to Istanbul?

Data is based on the past 12 months and shows the average weekly airfare from Sofia to Istanbul on different days of the week according to Trip.com.

Based on Trip.com data from the past 12 months, the cheapest day to fly from Sofia to Istanbul is Friday. The average fare on this day is usually lower than on other days. Try to avoid flying on Sunday as fares are usually the highest.

€124
€104
€84
€64
    Cheapest
  • €106
    Mon
  • €102
    Tue
  • €99
    Wed
  • €106
    Thu
  • €84
    Fri
  • €107
    Sat
  • €124
    Sun

Flight FAQs

  • Which airlines offer the cheapest flights from Sofia (SOF) to Istanbul (IST)?

    Based on Trip.com data, Pegasus Airlines offers one-way fares as low as €38 on Cheapest nonstop routes (e.g. SOF to SAW on Fri, Mar 13), while Pegasus Airlines offers Cheapest nonstop round-trips from €83 departing on Fri, Mar 20 and returning on Sun, Mar 22.
  • At the moment, you can catch a direct flight from Sofia to Istanbul with the following airlines, including: Pegasus Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes about 1 hour 28 minutes to fly from Sofia (SOF) to Istanbul (IST).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Sofia to Istanbul 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.
  • Based on Trip.com data in the past 4 weeks, there is 28 flight per week flying from Sofia to Istanbul. You can check the weekly schedule for popular airlines on this route below: Pegasus Airlines: S/M/T/W/T/F/S -- PC272 (16:37)
  • To find best deals on flights from Sofia to Istanbul, 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 Fri, Mar 13, with one-way flights priced at just €38.
    · 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 Istanbul travel is around January.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Sofia to Istanbul is November, when demand for travel is lower.
  • After crunching the numbers on our March flight calendar, it's currently cheapest to fly from Sofia to Istanbul on March 14, 2026 with Pegasus Airlines, with prices starting at €41.
  • You can land at any one of the following hubs in Istanbul, with Sofia International Airport to Sabiha Gokcen International Airport (SOF-SAW) is by far the most common option on this route: Ataturk Airport (ISL) Istanbul Airport (IST) Sabiha Gokcen International Airport (SAW).
  • The time difference between Istanbul and Sofia is 1h.
  • Tickets can only be changed or cancelled 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.

Trip.com airline insights on flights from Sofia to Istanbul

Which airlines offer the cheapest direct flights from Sofia to Istanbul?

Data is based on the past 12 months and reflects the average fare of all direct flights from Sofia to Istanbul on Trip.com.

Based on Trip.com data from the past 12 months, the airline offering the cheapest direct flights from Sofia to Istanbul is Pegasus Airlines, with an average fare of €74.

€34
€74
€114
€154
€194
Pegasus Airlines
€74
Pegasus Airlines
AEGEAN
€83
AEGEAN
Tarom
€160
Tarom
Turkish Airlines
€164
Turkish Airlines
Air Serbia
€194
Air Serbia

Which airlines operate the most flights from Sofia to Istanbul?

The data is based on the past month and shows the number of flights each airline has from Sofia to Istanbul on Trip.com.

According to Trip.com data from the past month, the airline with the most flights from Sofia to Istanbul is Turkish Airlines/IndiGo, operating 23 flights per week.

1
8
16
23
Turkish Airlines
23
Turkish Airlines
IndiGo
23
IndiGo
Pegasus Airlines
10
Pegasus Airlines
Royal Jordanian
8
Royal Jordanian
EgyptAir
8
EgyptAir
Singapore Airlines
8
Singapore Airlines

How many flights fly from Sofia to Istanbul each day?

The data is based on the past month and shows the number of flights per day of the week from Sofia to Istanbul on Trip.com.

Based on Trip.com data from the past month, flights from Sofia to Istanbul are most frequent on Friday/Sunday, while the fewest flights operate on Monday/Tuesday/Wednesday/Thursday.

55
48
40
33
Highest
40
Mon
40
Tue
40
Wed
40
Thu
55
Fri
50
Sat
55
Sun