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Flights from Istanbul to Sofia

What to know about flights from Istanbul to Sofia?

The distance between Istanbul and Sofia is approximately 494.78km. The average flight time between Istanbul and Sofia is 1 hour 17 minutes. According to Trip.com data, travel demand is highest in February. December is generally the cheapest month to book.

Cheapest one-way
VND 1,087,000
Pegasus Airlines Pegasus Airlines IST-SOF 1h 20m · Direct Fri, Nov 27
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Cheapest return
VND 2,192,000
Pegasus Airlines Pegasus Airlines IST-SOF 1h 20m · Direct Wed, Nov 18 - Fri, Nov 20
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Best time to book
December
Cheapest
February
Peak season for travel
Route details
494.78km
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 VND 1,087,000 and round-trip from VND 2,192,000. Based on Trip.com's latest 7-day flight data.

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.

Flight.News
There are currently no active weather alerts reported for Sofia as of 12 November 2026. Please stay tuned for local weather updates and official forecasts.
Flights from Istanbul to Sofia operate an average of 5 times per day over the past 7 days, with a 29.0% on-time departure rate and a 93.5% on-time arrival rate.

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

You can choose from 2 airlines flying from Istanbul to Sofia, including Pegasus Airlines, Turkish Airlines and . Pegasus Airlines currently offers the cheapest direct ticket on this route.
Pegasus Airlines logo Pegasus Airlines
Turkish Airlines logo Turkish Airlines
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 Istanbul to Sofia Flights

What is the cheapest month to book a one-way flight from Istanbul to Sofia?

Average price of one-way tickets from Istanbul to Sofia booked on Trip.com over the past 12 months.

For a one-way flight from Istanbul to Sofia, fares are lowest in December (VND 2,678,000) and highest in September (VND 3,709,000).

VND 3,709,000
VND 3,193,500
VND 2,678,000
VND 2,162,500
    Cheapest
  • VND 3,179,000
    Nov
  • VND 2,678,000
    Dec
  • VND 3,003,000
    Jan
  • VND 3,342,000
    Feb
  • VND 3,129,000
    Mar
  • VND 3,204,000
    Apr
  • VND 3,107,000
    May
  • VND 3,609,000
    Jun
  • VND 2,938,000
    Jul
  • VND 3,162,000
    Aug
  • VND 3,709,000
    Sep
  • VND 3,101,000
    Oct

What is the cheapest month to book a return flight from Istanbul to Sofia?

Average price of return tickets from Istanbul to Sofia booked on Trip.com over the past 12 months.

For a return flight from Istanbul to Sofia, fares are lowest in December (VND 5,603,000) and highest in February (VND 10,334,000).

VND 10,334,000
VND 7,968,500
VND 5,603,000
VND 3,237,500
    Cheapest
  • VND 6,979,000
    Nov
  • VND 5,603,000
    Dec
  • VND 7,185,000
    Jan
  • VND 10,334,000
    Feb
  • VND 6,843,000
    Mar
  • VND 6,805,000
    Apr
  • VND 6,045,000
    May
  • VND 6,650,000
    Jun
  • VND 6,195,000
    Jul
  • VND 7,754,000
    Aug
  • VND 5,889,000
    Sep
  • VND 7,150,000
    Oct

During the St Andrew's Day, which day is cheapest to fly from Istanbul to Sofia?

Data is based on the lowest one-way price from Istanbul to Sofia during St Andrew's Day in the Trip.com database over the past three days.

St Andrew's Day is scheduled for Nov 30. The lowest flight fares from Istanbul to Sofia are available on Nov 27, starting from VND 1,113,000.

VND 2,773,000
VND 1,943,000
VND 1,113,000
VND 283,000
  • VND 2,773,000
    26
    Nov
  • VND 1,113,000
    27
  • VND 1,718,000
    28
  • VND 2,627,000
    29
  • VND 2,115,000
    30
  • VND 1,803,000
    1
    Dec
  • VND 1,803,000
    2

Flight FAQs

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

    Based on Trip.com data, Pegasus Airlines offers Cheapest nonstop one-way flights from VND 1,087,000 (for example, SAW–SOF on Fri, Nov 27). For a Cheapest nonstop return flight, Pegasus Airlines offers fares from VND 2,192,000, departing on Wed, Nov 18 and returning on Fri, Nov 20.
  • At the moment, you can catch a direct flight from Istanbul to Sofia 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.
  • A flight from Istanbul (IST) to Sofia (SOF) takes an average of 1 hour 17 minutes.
  • 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.
  • On average, 32 direct flights operate each week between Istanbul and Sofia. See below the schedules of the main airlines serving this route:
    Turkish Airlines: S/M/T/W/T/F/S – TK1031 (departure at 15:05)
  • Here are some tips for finding the best flight deals from Istanbul to Sofia on Trip.com:
    · Be flexible with your travel dates. The cheapest flight is currently on Fri, Nov 27, with one-way fares from just VND 1,087,000.
    · Compare airlines. Pegasus Airlines currently offers the lowest fares on this route.
    · Set up a price alert to track fare changes without searching every day.
    · Check Trip.com regularly for flight deals and available promo codes.
    · Avoid peak season or book early. February is generally the busiest month for travel to Sofia.
    · Get exclusive promo codes on the Trip.com app.
  • The cheapest month to book a flight from Istanbul to Sofia is usually December, when demand 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 VND 1,087,000.
  • Flights to Sofia can arrive at: Sofia Airport (SOF). The most common route connects Sabiha Gökçen International Airport and Sofia Airport (SAW–SOF).
  • The time difference between Sofia and Istanbul 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.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Istanbul to Sofia is VND 5,516,000. Fares vary by travel date, airline and availability.
  • Based on Trip.com data for flights departing in the next 30 days, the average return fare from Istanbul to Sofia is VND 6,050,000. Fares vary by travel date, airline and availability.
  • 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 traveller 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 the estimated lowest prices and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed on this page are all-inclusive (including taxes, fuel surcharges, civil aviation development fund, etc.), with all fees confirmed before payment. Fees for luggage, meals, Wi-Fi, 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 have been updated within the last 24 hours—sometimes even in real time. The more popular the route, the more accurate the data.

Change & Cancellation Policy

Trip.com shows the cancellation and change policies for each flight ticket during the booking process, including any fees and applicable conditions. Please check 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 according to the airline's ticket policy.
Cancellation/change due to a flight schedule change:
If the flight schedule has changed 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 visit the customer support pages.