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Flights from Istanbul to Sofia

Hi, I've summed up all the key info for Istanbul to Sofia flights

Cheapest one-way

US$ 50
Pegasus Airlines Fri, Oct 16

76% below next 30d avg. (US$205)

Cheapest round-trip

US$ 118
Pegasus Airlines Fri, Nov 6

59% below next 30d avg. (US$291)

When to fly

October Cheapest month
January Peak month

Fastest flight

1h 20m Avg: 1h 19m

Recommended airlines

With a lowest one-way fare of US$50 , travelers can expect an average price of US$205 for upcoming trips, while round-trip tickets start at US$118 . Flights typically take around 1h 19m , but the fastest nonstop option completes the journey in just 1h 20m minutes. There are 29 flights weekly on this route. You can land at any one of the following hubs in Sofia: Sofia Airport (SOF) . Flying from Istanbul Airport to Sofia Airport (IST-SOF) is by far the most common option on this route. To secure the best rates, booking 40 days in advance is recommended, and the cheapest travel days are Tuesday, Wednesday, and Saturday .

Updated 3d ago · This content is an AI-powered summary based on Trip.com data. Prices and availability are subject to change. Please refer to actual prices, availability, and travel conditions.

Explore the cheapest one-way and round-trip flights from Istanbul to Sofia over the next 90 days, with one-way fares from US$50 and round-trip from US$118. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        SAW 13:00
        1h 20m
        Nonstop
        SOF 13:20
        Istanbul - Sofia | Fri, Nov 6 | Pegasus Airlines
        SOF 12:30
        1h 15m
        Nonstop
        SAW 14:45
        Sofia - Istanbul | Tue, Nov 10 | Pegasus Airlines
        US$118 US$130
        9% off
        9% off
        US$130 US$118
      • SAW 11:40
        1h 20m
        Nonstop
        SOF 12:00
        Istanbul - Sofia | Mon, Nov 9 | Pegasus Airlines
        SOF 12:55
        1h 15m
        Nonstop
        SAW 15:10
        Sofia - Istanbul | Sat, Nov 14 | Pegasus Airlines
        US$118 US$130
        9% off
        9% off
        US$130 US$118
      • SAW 11:15
        1h 20m
        Nonstop
        SOF 11:35
        Istanbul - Sofia | Tue, Oct 27 | Pegasus Airlines
        SOF 12:30
        1h 15m
        Nonstop
        SAW 14:45
        Sofia - Istanbul | Tue, Nov 3 | Pegasus Airlines
        US$119 US$130
        8% off
        8% off
        US$130 US$119
      • SAW 11:40
        1h 20m
        Nonstop
        SOF 12:00
        Istanbul - Sofia | Sat, Oct 31 | Pegasus Airlines
        SOF 12:55
        1h 15m
        Nonstop
        SAW 15:10
        Sofia - Istanbul | Sat, Nov 7 | Pegasus Airlines
        US$120
        8% off
        US$130 US$120
      • SAW 13:00
        1h 20m
        Nonstop
        SOF 13:20
        Istanbul - Sofia | Fri, Oct 30 | Pegasus Airlines
        SOF 14:15
        1h 15m
        Nonstop
        SAW 16:30
        Sofia - Istanbul | Fri, Nov 6 | Pegasus Airlines
        US$120
        8% off
        US$130 US$120
      • SAW 11:40
        1h 20m
        Nonstop
        SOF 12:00
        Istanbul - Sofia | Sat, Nov 7 | Pegasus Airlines
        SOF 12:30
        1h 15m
        Nonstop
        SAW 14:45
        Sofia - Istanbul | Tue, Nov 10 | Pegasus Airlines
        US$120
        8% off
        US$130 US$120
      • SAW 11:40
        1h 20m
        Nonstop
        SOF 12:00
        Istanbul - Sofia | Sun, Nov 8 | Pegasus Airlines
        SOF 12:55
        1h 15m
        Nonstop
        SAW 15:10
        Sofia - Istanbul | Sat, Nov 14 | Pegasus Airlines
        US$120
        8% off
        US$130 US$120
      • SAW 11:15
        1h 20m
        Nonstop
        SOF 11:35
        Istanbul - Sofia | Tue, Nov 3 | Pegasus Airlines
        SOF 12:30
        1h 15m
        Nonstop
        SAW 14:45
        Sofia - Istanbul | Tue, Nov 10 | Pegasus Airlines
        US$120
        8% off
        US$130 US$120
      • SAW 11:40
        1h 20m
        Nonstop
        SOF 12:00
        Istanbul - Sofia | Sun, Nov 1 | Pegasus Airlines
        SOF 12:55
        1h 15m
        Nonstop
        SAW 15:10
        Sofia - Istanbul | Sun, Nov 8 | Pegasus Airlines
        US$120
        8% off
        US$130 US$120
      • SAW 11:40
        1h 20m
        Nonstop
        SOF 12:00
        Istanbul - Sofia | Thu, Nov 5 | Pegasus Airlines
        SOF 12:55
        1h 15m
        Nonstop
        SAW 15:10
        Sofia - Istanbul | Mon, Nov 9 | Pegasus Airlines
        US$120
        8% off
        US$130 US$120
      • IST 13:00
        17h 25m
        1 stop
        SOF 14:00
        Istanbul - Sofia | Mon, Sep 14 | Normal Airline
        SOF 15:00
        6h
        Nonstop
        IST 16:00
        Sofia - Istanbul | Wed, Sep 16 | Normal Airline
        More cheap flights
        More cheap flights
      • Cheapest nonstop
        SAW 11:00
        1h 20m
        Nonstop
        SOF 12:20
        Istanbul - Sofia | Fri, Oct 16 | Pegasus Airlines
        US$50 US$67
        25% off
        25% off
        US$67 US$50
      • SAW 11:40
        1h 20m
        Nonstop
        SOF 12:00
        Istanbul - Sofia | Mon, Nov 9 | Pegasus Airlines
        US$60 US$67
        10% off
        10% off
        US$67 US$60
      • SAW 17:35
        1h 20m
        Nonstop
        SOF 18:55
        Istanbul - Sofia | Thu, Oct 1 | Pegasus Airlines
        US$61 US$67
        9% off
        9% off
        US$67 US$61
      • SAW 17:35
        1h 20m
        Nonstop
        SOF 18:55
        Istanbul - Sofia | Thu, Oct 15 | Pegasus Airlines
        US$61
        9% off
        US$67 US$61
      • SAW 11:25
        1h 20m
        Nonstop
        SOF 12:45
        Istanbul - Sofia | Wed, Oct 7 | Pegasus Airlines
        US$61
        9% off
        US$67 US$61
      • SAW 11:40
        1h 20m
        Nonstop
        SOF 12:00
        Istanbul - Sofia | Wed, Nov 11 | Pegasus Airlines
        US$62
        7% off
        US$67 US$62
      • SAW 16:25
        1h 20m
        Nonstop
        SOF 17:45
        Istanbul - Sofia | Sun, Oct 18 | Pegasus Airlines
        US$62
        7% off
        US$67 US$62
      • SAW 11:00
        1h 20m
        Nonstop
        SOF 12:20
        Istanbul - Sofia | Fri, Oct 23 | Pegasus Airlines
        US$62
        7% off
        US$67 US$62
      • SAW 11:40
        1h 20m
        Nonstop
        SOF 12:00
        Istanbul - Sofia | Wed, Oct 28 | Pegasus Airlines
        US$62
        7% off
        US$67 US$62
      • SAW 11:15
        1h 20m
        Nonstop
        SOF 11:35
        Istanbul - Sofia | Tue, Nov 3 | Pegasus Airlines
        US$62
        7% off
        US$67 US$62
      • IST 13:00
        17h 25m
        1 stop
        SOF 14:00
        Istanbul - Sofia | Mon, Sep 14 | Normal Airline
        More cheap flights
        More cheap flights

Flight.News
Flights from Istanbul to Sofia operate an average of 10 times per day over the past 7 days, with a 25.0% on-time departure rate and a 91.3% on-time arrival rate.

Which airlines are the most popular for Istanbul to Sofia flights?

You can pick from 2 carriers that fly from Istanbul to Sofia including Turkish Airlines, Pegasus Airlines, , with Pegasus Airlines serving cheapest direct ticket on this route.
Turkish Airlines logo Turkish Airlines
Pegasus Airlines logo Pegasus Airlines
Airlines are determined based on actual purchased flight tickets from Istanbul to Sofia according to previous 12 months data from Trip.com.

Istanbul to Sofia Flight Information

The distance between Istanbul and Sofia is about 494.78 km. The average flying time from Istanbul to Sofia is around 1 hour 19 minutes. Based on Trip.com's latest data, travel demand is highest in January. The off-season for travel is October.

Cheapest one-way flight price US$50
Cheapest return ticket price US$118
Cheapest month October
Peak season for travel January
Flight distance 494.78 km
Average flight time 1 hour 19 minutes
Popular airline Turkish Airlines
Frequency ～18/week
Flight statistics for the Istanbul–Sofia route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com Price Trends on Flights from Istanbul to Sofia

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

Average monthly one-way flight prices from Istanbul to Sofia, based on bookings made by Trip.com users over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from Istanbul to Sofia is September, with an average price of US$101; while the month with the highest flight price is usually June, with an average price of up to US$140.

US$140
US$121
US$101
US$82
  • US$101
    Sep
  • US$110
    Oct
  • US$133
    Nov
  • US$104
    Dec
  • US$117
    Jan
  • US$130
    Feb
  • US$122
    Mar
  • US$125
    Apr
  • US$121
    May
  • US$140
    Jun
  • US$114
    Jul
  • US$123
    Aug

Which month has the cheapest round-trip flights from Istanbul to Sofia?

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

Based on data from Trip.com, the lowest prices for round-trip flights from Istanbul to Sofia are found during October, with an average price of US$194. Conversely, the highest prices are found during February, with an average price of up to US$401.

US$401
US$298
US$194
US$91
    Cheapest
  • US$347
    Sep
  • US$194
    Oct
  • US$285
    Nov
  • US$217
    Dec
  • US$279
    Jan
  • US$401
    Feb
  • US$265
    Mar
  • US$264
    Apr
  • US$234
    May
  • US$258
    Jun
  • US$240
    Jul
  • US$301
    Aug

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 US$50 on Cheapest nonstop routes (e.g. SAW to SOF on Fri, Oct 16), while Pegasus Airlines offers Cheapest nonstop round-trips from US$118 departing on Fri, Nov 6 and returning on Tue, Nov 10.
  • 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.
  • It takes about 1 hour 19 minutes to fly 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.
  • Based on Trip.com data in the past 4 weeks, there is 29 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 (14:00)
  • 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 Fri, Oct 16, with one-way flights priced at just US$50.
    · 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.
  • The cheapest months to fly from Istanbul to Sofia is October, when demand for travel is lower.
  • After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Istanbul to Sofia on September 20, 2026 with Pegasus Airlines, with prices starting at US$52.
  • You can land at any one of the following hubs in Sofia: Sofia Airport (SOF). Flying from Istanbul Airport to Sofia Airport (IST-SOF) is by far the most common option on this route.
  • The time difference between Sofia and Istanbul 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 Istanbul to Sofia is US$205. 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 Istanbul to Sofia is US$291. The final price depends on the outbound and return dates, airline and fare conditions.
  • Enter Istanbul and Sofia, 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 Istanbul to Sofia. Check baggage, seat and payment fees before comparing the final price.

Trip.com Airline Insights on Flights from Istanbul to Sofia

Which airline offers the cheapest direct flights from Istanbul to Sofia?

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

Based on Trip.com’s data from the past 12 months, Pegasus Airlines provides the lowest-priced direct flights from Istanbul to Sofia, with fares starting at US$91.

US$64
US$91
US$119
US$146
US$173
Pegasus Airlines
US$91
Pegasus Airlines
AEGEAN
US$150
AEGEAN
LOT Polish Airlines
US$166
LOT Polish Airlines
Air Serbia
US$169
Air Serbia
Turkish Airlines
US$173
Turkish Airlines

Which airline operates the most flights from Istanbul to Sofia?

Total flights from Istanbul to Sofia across all airlines. (Based on Trip.com data from the past month)

Based on Trip.com’s data from the past month, Turkish Airlines operates the most frequent flights from Istanbul to Sofia, with 26 flights 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 fly from Istanbul to Sofia daily?

The data is based on the flight numbers for each day of the week from Istanbul to Sofia within the Trip.com database over the past month.

Based on the past month's historical data from Trip.com, the number of flights from Istanbul to Sofia is the highest on Friday and the lowest on Monday/Tuesday/Wednesday/Thursday.

55
48
40
33
Highest
40
Mon
40
Tue
40
Wed
40
Thu
55
Fri
49
Sat
53
Sun

Explore More Popular Flights

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

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.