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Flights from Sofia to Istanbul

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 cheapest month to book is November.

Cheapest one-way
HK$436
Pegasus Airlines Pegasus Airlines SOF-IST 1h 15m · Nonstop Tue, Sep 22
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Cheapest round-trip
HK$999
Pegasus Airlines Pegasus Airlines SOF-IST 1h 15m · Nonstop Thu, Aug 20 - Mon, Aug 24
Select flight
Recommended airlines
Pegasus Airlines Pegasus Airlines Cheapest · From HK$436 Pegasus Airlines Pegasus Airlines Most booked
When to travel
May
Cheapest
January
Peak season for travel
Route details
494.78 km
Flight distance
1h 27m
Average flight time

Book direct flights from Sofia to Istanbul: One way flights from HK$436, round trip flights from HK$999. Find flight deals for the next 3 months below.

      • Cheapest nonstop
        SOF 7:55 PM
        1h 15m
        Nonstop
        SAW 9:10 PM
        Sofia - Istanbul | Thu, Aug 20 | Pegasus Airlines
        SAW 11:25 AM
        1h 20m
        Nonstop
        SOF 12:45 PM
        Istanbul - Sofia | Mon, Aug 24 | Pegasus Airlines
        HK$999 HK$1,635
        39% off
        39% off
        HK$1,635 HK$999
      • SOF 1:45 PM
        1h 15m
        Nonstop
        SAW 3:00 PM
        Sofia - Istanbul | Mon, Aug 24 | Pegasus Airlines
        SAW 5:35 PM
        1h 20m
        Nonstop
        SOF 6:55 PM
        Istanbul - Sofia | Thu, Aug 27 | Pegasus Airlines
        HK$1,015 HK$1,635
        38% off
        38% off
        HK$1,635 HK$1,015
      • SOF 1:45 PM
        1h 15m
        Nonstop
        SAW 3:00 PM
        Sofia - Istanbul | Tue, Aug 18 | Pegasus Airlines
        SAW 4:25 PM
        1h 20m
        Nonstop
        SOF 5:45 PM
        Istanbul - Sofia | Sun, Aug 23 | Pegasus Airlines
        HK$1,062 HK$1,635
        35% off
        35% off
        HK$1,635 HK$1,062
      • SOF 1:45 PM
        1h 15m
        Nonstop
        SAW 3:00 PM
        Sofia - Istanbul | Tue, Aug 25 | Pegasus Airlines
        SAW 4:25 PM
        1h 20m
        Nonstop
        SOF 5:45 PM
        Istanbul - Sofia | Sun, Aug 30 | Pegasus Airlines
        HK$1,119
        32% off
        HK$1,635 HK$1,119
      • SOF 1:45 PM
        1h 15m
        Nonstop
        SAW 3:00 PM
        Sofia - Istanbul | Wed, Sep 30 | Pegasus Airlines
        SAW 11:25 AM
        1h 20m
        Nonstop
        SOF 12:45 PM
        Istanbul - Sofia | Wed, Oct 7 | Pegasus Airlines
        HK$1,132
        31% off
        HK$1,635 HK$1,132
      • SOF 6:45 PM
        1h 15m
        Nonstop
        SAW 8:00 PM
        Sofia - Istanbul | Sun, Sep 20 | Pegasus Airlines
        SAW 11:25 AM
        1h 20m
        Nonstop
        SOF 12:45 PM
        Istanbul - Sofia | Wed, Sep 23 | Pegasus Airlines
        HK$1,138
        30% off
        HK$1,635 HK$1,138
      • SOF 1:45 PM
        1h 15m
        Nonstop
        SAW 3:00 PM
        Sofia - Istanbul | Mon, Sep 28 | Pegasus Airlines
        SAW 5:35 PM
        1h 20m
        Nonstop
        SOF 6:55 PM
        Istanbul - Sofia | Thu, Oct 1 | Pegasus Airlines
        HK$1,149
        30% off
        HK$1,635 HK$1,149
      • SOF 1:15 PM
        1h 15m
        Nonstop
        SAW 2:30 PM
        Sofia - Istanbul | Fri, Aug 21 | Pegasus Airlines
        SAW 11:25 AM
        1h 20m
        Nonstop
        SOF 12:45 PM
        Istanbul - Sofia | Mon, Aug 24 | Pegasus Airlines
        HK$1,162
        28% off
        HK$1,635 HK$1,162
      • SOF 7:55 PM
        1h 15m
        Nonstop
        SAW 9:10 PM
        Sofia - Istanbul | Thu, Sep 3 | Pegasus Airlines
        SAW 11:25 AM
        1h 20m
        Nonstop
        SOF 12:45 PM
        Istanbul - Sofia | Mon, Sep 7 | Pegasus Airlines
        HK$1,168
        28% off
        HK$1,635 HK$1,168
      • SOF 7:55 PM
        1h 15m
        Nonstop
        SAW 9:10 PM
        Sofia - Istanbul | Thu, Oct 8 | Pegasus Airlines
        SAW 5:35 PM
        1h 20m
        Nonstop
        SOF 6:55 PM
        Istanbul - Sofia | Thu, Oct 15 | Pegasus Airlines
        HK$1,177
        28% off
        HK$1,635 HK$1,177
      • SOF 1:00 PM
        17h 25m
        1 stop
        IST 2:00 PM
        Sofia - Istanbul | Wed, Aug 19 | Normal Airline
        IST 3:00 PM
        6h
        Nonstop
        SOF 4:00 PM
        Istanbul - Sofia | Fri, Aug 21 | Normal Airline
        Find more flights
        Find more flights
      • Cheapest nonstop
        SOF 1:45 PM
        1h 15m
        Nonstop
        SAW 3:00 PM
        Sofia - Istanbul | Tue, Sep 22 | Pegasus Airlines
        HK$436 HK$707
        38% off
        38% off
        HK$707 HK$436
      • SOF 6:45 PM
        1h 15m
        Nonstop
        SAW 8:00 PM
        Sofia - Istanbul | Sun, Sep 20 | Pegasus Airlines
        HK$489 HK$707
        31% off
        31% off
        HK$707 HK$489
      • SOF 1:45 PM
        1h 15m
        Nonstop
        SAW 3:00 PM
        Sofia - Istanbul | Wed, Sep 9 | Pegasus Airlines
        HK$494 HK$707
        30% off
        30% off
        HK$707 HK$494
      • SOF 1:45 PM
        1h 15m
        Nonstop
        SAW 3:00 PM
        Sofia - Istanbul | Wed, Sep 23 | Pegasus Airlines
        HK$495
        30% off
        HK$707 HK$495
      • SOF 7:55 PM
        1h 15m
        Nonstop
        SAW 9:10 PM
        Sofia - Istanbul | Thu, Oct 8 | Pegasus Airlines
        HK$504
        28% off
        HK$707 HK$504
      • SOF 1:15 PM
        1h 15m
        Nonstop
        SAW 2:30 PM
        Sofia - Istanbul | Fri, Oct 9 | Pegasus Airlines
        HK$504
        28% off
        HK$707 HK$504
      • SOF 1:30 PM
        1h 15m
        Nonstop
        SAW 2:45 PM
        Sofia - Istanbul | Sat, Oct 10 | Pegasus Airlines
        HK$504
        28% off
        HK$707 HK$504
      • SOF 1:45 PM
        1h 15m
        Nonstop
        SAW 3:00 PM
        Sofia - Istanbul | Tue, Sep 15 | Pegasus Airlines
        HK$504
        28% off
        HK$707 HK$504
      • SOF 1:30 PM
        1h 15m
        Nonstop
        SAW 2:45 PM
        Sofia - Istanbul | Sat, Sep 26 | Pegasus Airlines
        HK$506
        28% off
        HK$707 HK$506
      • SOF 7:55 PM
        1h 15m
        Nonstop
        SAW 9:10 PM
        Sofia - Istanbul | Thu, Sep 17 | Pegasus Airlines
        HK$509
        28% off
        HK$707 HK$509
      • SOF 1:00 PM
        17h 25m
        1 stop
        IST 2:00 PM
        Sofia - Istanbul | Wed, Aug 19 | Normal Airline
        Find more flights
        Find more flights

Popular airlines from Sofia to Istanbul

Direct flights available! Find 2 airlines fly direct from Sofia to Istanbul, including Pegasus Airlines, Turkish Airlines, Pegasus Airlines offers the cheapest non stop flights.
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.

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 May, with an average price of HK$836; while the month with the highest flight price is usually March, with an average price of up to HK$1,301.

HK$1,301
HK$1,069
HK$836
HK$604
    Cheapest
  • HK$1,132
    Aug
  • HK$1,078
    Sep
  • HK$919
    Oct
  • HK$1,095
    Nov
  • HK$1,038
    Dec
  • HK$1,062
    Jan
  • HK$883
    Feb
  • HK$1,301
    Mar
  • HK$886
    Apr
  • HK$836
    May
  • HK$864
    Jun
  • HK$925
    Jul

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 March, with an average price of HK$1,578. Conversely, the highest prices are found during January, with an average price of up to HK$3,055.

HK$3,055
HK$2,317
HK$1,578
HK$840
    Cheapest
  • HK$2,180
    Aug
  • HK$1,621
    Sep
  • HK$2,491
    Oct
  • HK$1,917
    Nov
  • HK$2,573
    Dec
  • HK$3,055
    Jan
  • HK$1,782
    Feb
  • HK$1,578
    Mar
  • HK$1,928
    Apr
  • HK$1,598
    May
  • HK$2,040
    Jun
  • HK$2,006
    Jul

When is the cheapest day to fly from Sofia to Istanbul during Labor Day?

Data is based on the lowest one-way price from Sofia to Istanbul during Labor Day on Trip.com in the past 3 days.

Labor Day is scheduled for Sep 7. The cheapest flights from Sofia to Istanbul are available on Sep 7, with fares starting at HK$497.

HK$1,092
HK$795
HK$497
HK$200
    Cheapest
  • HK$1,092
    3
    Sep
  • HK$865
    4
  • HK$946
    5
  • HK$506
    6
  • HK$497
    7
  • HK$501
    8
  • HK$506
    9

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 HK$436 on Cheapest nonstop routes (e.g. SOF to SAW on Tue, Sep 22), while Pegasus Airlines offers Cheapest nonstop round-trips from HK$999 departing on Thu, Aug 20 and returning on Mon, Aug 24.
  • 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: Turkish Airlines: S/M/T/W/T/F/S -- TK1032 (16:33)
  • 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 Tue, Sep 22, with one-way flights priced at just HK$436.
    · 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 August flight calendar, it's currently cheapest to fly from Sofia to Istanbul on August 30, 2026 with Pegasus Airlines, with prices starting at HK$422.
  • You can land at any one of the following hubs in Istanbul, with Sofia Airport to Sabiha Gökçen International Airport (SOF-SAW) 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.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Sofia to Istanbul is HK$1,624. Fares vary by travel date, airline and availability.
  • Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Sofia to Istanbul is HK$2,238. The final price depends on the outbound and return dates, airline and fare conditions.
  • Enter Sofia and Istanbul, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.
  • Pegasus Airlinesare the most popular budget airlines flying from Sofia to Istanbul. Check baggage, seat and payment fees before comparing the final price.

Trip.com airline insights on flights from Sofia to Istanbul

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

Data is based on the average price of all nonstop flights from Sofia to Istanbul on Trip.com in the past 12 months.

Based on Trip.com data from the past 12 months, Pegasus Airlines offers the cheapest nonstop flights from Sofia to Istanbul, with an average price of HK$708.

HK$358
HK$708
HK$1,058
HK$1,408
HK$1,758
Pegasus Airlines
HK$708
Pegasus Airlines
AEGEAN
HK$930
AEGEAN
Tarom
HK$1,480
Tarom
Turkish Airlines
HK$1,531
Turkish Airlines
Air Serbia
HK$1,758
Air Serbia

Which airlines operate the most flights from Sofia to Istanbul?

Data is based on the number of flights from Sofia to Istanbul operated by each airline on Trip.com in the past month.

Based on Trip.com data from the past month, Turkish Airlines operates the most flights from Sofia to Istanbul, with 26 flight per week.

0
7
17
26
Turkish Airlines
26
Turkish Airlines
IndiGo
23
IndiGo
EgyptAir
8
EgyptAir
Royal Jordanian
8
Royal Jordanian
Singapore Airlines
8
Singapore Airlines
Pegasus Airlines
7
Pegasus Airlines

How many flights are there each day from Sofia to Istanbul?

Data is based on the number of flights from Sofia to Istanbul for each day of the week on Trip.com over the last month.

Based on Trip.com data from the past month, the most flights from Sofia to Istanbul depart on Friday, and the fewest flights depart on Monday.

55
47
38
30
Highest
38
Mon
41
Tue
40
Wed
40
Thu
55
Fri
49
Sat
54
Sun

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

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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.