Find cheap airlines flights from Sofia to Istanbul

You can choose from 2 airlines that fly from Sofia to Istanbul, including Pegasus Airlines, Turkish Airlines, Pegasus Airlines has lowest fares on this route.
Pegasus Airlines logo Pegasus Airlines
Turkish Airlines logo Turkish Airlines
Airlines are determined based on actual purchased flight tickets from Sofia to Istanbul according to previous 12 months data from Trip.com.

Book direct flights from Sofia to Istanbul: One way flights from $54, round trip flights from $98. Find flight deals for the next 3 months below.

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 Info | Sofia to Istanbul

The distance between Sofia and Istanbul is approximately 494.78 km. It takes around 1 hour 27 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$54
Cheapest round-trip ticket price$98
Off-season for travelNovember
Peak season for travelJanuary
Flight distance494.78 km
Average flight time1 hour 27 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

Which month has the cheapest one-way flights from Sofia to Istanbul?

The average price of one-way flights from Sofia to Istanbul purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from Sofia to Istanbul is June, with an average price of $106; while the month with the highest flight price is usually March, with an average price of up to $164.

$164
$135
$106
$77
    Cheapest
  • $115
    Apr
  • $121
    May
  • $106
    Jun
  • $108
    Jul
  • $130
    Aug
  • $136
    Sep
  • $116
    Oct
  • $138
    Nov
  • $131
    Dec
  • $134
    Jan
  • $111
    Feb
  • $164
    Mar

What is the cheapest month for round-trip flights from Sofia to Istanbul?

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

According to historical data from Trip.com, the lowest prices for flights from Sofia to Istanbul are found during May, with an average price of $142. Conversely, the highest prices are found during January, with an average price of up to $384.

$384
$263
$142
$21
    Cheapest
  • $346
    Apr
  • $142
    May
  • $163
    Jun
  • $207
    Jul
  • $265
    Aug
  • $204
    Sep
  • $314
    Oct
  • $241
    Nov
  • $324
    Dec
  • $384
    Jan
  • $224
    Feb
  • $199
    Mar

Frequently Asked Questions

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

    Based on Trip.com data, Pegasus Airlines offers one-way fares as low as $54 on Cheapest nonstop routes (e.g. SOF to SAW on Thu, May 14), while Pegasus Airlines offers Cheapest nonstop round-trips from $98 departing on Tue, May 19 and returning on Thu, May 21.
  • At the moment, you can catch a nonstop flight from Sofia to Istanbul with the following airlines, including: Pegasus Airlines Turkish Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes around 1 hour 27 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 29 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 (14:09)
  • 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 Thu, May 14, with one-way flights priced at just $54.
    · 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 April flight calendar, it's currently cheapest to fly from Sofia to Istanbul on April 28, 2026 with Pegasus Airlines, with prices starting at $48.
  • You can land at any one of the following hubs in Istanbul, with Sofia International Airport to Istanbul Airport (SOF-IST) is by far the most common option on this route: Istanbul Airport (IST) Sabiha Gökçen International Airport (SAW) Ataturk Airport (ISL).
  • The time difference between Istanbul and Sofia is 1h.
  • 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.

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
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.
Cancellation/change due to a flight schedule change:
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.