174K verified reviews | Excellent 4.4/5 rating on Trustpilot
Earn Trip Coins and airline miles, all in one booking
All-inclusive prices (incl. taxes, fuel, luggage) without hidden fees
Support 24/7, in 24+ languages

What to know about flights from Istanbul to Sofia?

The distance between Istanbul and Sofia is approximately 494.78 km. It takes around 1 hour 17 minutes on average to fly from Istanbul to Sofia. Based on Trip.com's data, travel demand peaks in February. The cheapest month to book is December.

Cheapest one-way
PLN 169
Pegasus Airlines Pegasus Airlines IST-SOF 1h 20m · Nonstop Fri, Nov 27
Select flight
Cheapest round-trip
PLN 340
Pegasus Airlines Pegasus Airlines IST-SOF 1h 20m · Nonstop Wed, Nov 18 - Fri, Nov 20
Select flight
Flight news

Weather update for Sofia as of November 13, 2026: No active weather alerts or warnings are currently in effect.

Updated 12h ago

When to travel
December
Cheapest
February
Peak season for travel
Route details
494.78 km
Flight distance
1h 17m
Average flight time

Explore the cheapest one-way and round-trip flights from Istanbul to Sofia over the next 90 days, with one-way fares from PLN 169 and round-trip from PLN 340. Based on Trip.com's latest 7-day flight data.

Book flights to China and enjoy exclusive perks!View details

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

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

Direct flights available! Find 2 airlines fly direct from Istanbul to Sofia, including Turkish Airlines, Pegasus Airlines, Pegasus Airlines offers the cheapest non stop flights.
Airlines are determined based on actual purchased flight tickets from Istanbul to Sofia according to previous 12 months data from Trip.com.

Trip.com price insights on flights from Istanbul to Sofia

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

Average price of round-trip flights from Istanbul to Sofia 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 Istanbul to Sofia are found during December, with an average price of PLN 869. Conversely, the highest prices are found during February, with an average price of up to PLN 1,603.

PLN 1,603
PLN 1,236
PLN 869
PLN 502
    Cheapest
  • PLN 1,083
    Nov
  • PLN 869
    Dec
  • PLN 1,115
    Jan
  • PLN 1,603
    Feb
  • PLN 1,062
    Mar
  • PLN 1,056
    Apr
  • PLN 938
    May
  • PLN 1,032
    Jun
  • PLN 961
    Jul
  • PLN 1,203
    Aug
  • PLN 914
    Sep
  • PLN 1,109
    Oct

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

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

Based on Trip.com’s data, the cheapest month for flights from Istanbul to Sofia is December, with an average price of PLN 416; while the month with the highest flight price is usually September, with an average price of up to PLN 576.

PLN 576
PLN 496
PLN 416
PLN 336
    Cheapest
  • PLN 493
    Nov
  • PLN 416
    Dec
  • PLN 466
    Jan
  • PLN 519
    Feb
  • PLN 486
    Mar
  • PLN 497
    Apr
  • PLN 482
    May
  • PLN 560
    Jun
  • PLN 456
    Jul
  • PLN 491
    Aug
  • PLN 576
    Sep
  • PLN 481
    Oct

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

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

Thanksgiving Day is scheduled for Nov 26. The cheapest flights from Istanbul to Sofia are available on Nov 25, with fares starting at PLN 174.

PLN 359
PLN 267
PLN 174
PLN 82
    Cheapest
  • PLN 279
    23
    Nov
  • PLN 177
    24
  • PLN 174
    25
  • PLN 281
    26
  • PLN 184
    27
  • PLN 359
    28

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 PLN 169 on Cheapest nonstop routes (e.g. SAW to SOF on Fri, Nov 27), while Pegasus Airlines offers Cheapest nonstop round-trips from PLN 340 departing on Wed, Nov 18 and returning on Fri, Nov 20.
  • 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 around 1 hour 17 minutes to fly from Istanbul (IST) to Sofia (SOF).
  • 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 32 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 (15:05)
  • 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, Nov 27, with one-way flights priced at just PLN 169.
    · 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 February.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Istanbul to Sofia is December, when demand for travel is lower.
  • After crunching the numbers on our November flight calendar, it's currently cheapest to fly from Istanbul to Sofia on Fri, Nov 27 with Pegasus Airlines, with prices starting at PLN 169.
  • You can arrive at any of the following airports in Sofia: Sofia Airport (SOF). Flights from Istanbul Airport to Sofia Airport (IST-SOF) are by far the most popular option for 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 PLN 856. 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 PLN 919. 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 Airlines and SKY expressare the most popular budget airlines flying from Istanbul to Sofia. Check baggage, seat and payment fees before comparing the final price.

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.