SOF - IST

$76 Find Cheap Flights from Sofia to Istanbul

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sofia to Istanbul departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Istanbul Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sofia to Istanbul, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sofia to Istanbul, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Sofia to Istanbul (SOF-IST)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sofia to Istanbul that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sofia to Istanbul

Tue, Jul 22 - Tue, Jul 29
Turkish Airlines Logo
3:35 pm - 5:10 pmSOF-IST
1h 35mnonstop
Turkish Airlines Logo
1:20 pm - 2:45 pmIST-SOF
1h 25mnonstop
$141Turkish Airlines
Find Deal
Mon, Jul 21 - Mon, Jul 28
Turkish Airlines Logo
3:35 pm - 5:10 pmSOF-IST
1h 35mnonstop
Turkish Airlines Logo
1:20 pm - 2:45 pmIST-SOF
1h 25mnonstop
$142Turkish Airlines
Find Deal
Thu, Sep 18 - Mon, Sep 22
Turkish Airlines Logo
3:35 pm - 5:10 pmSOF-IST
1h 35mnonstop
Turkish Airlines Logo
1:20 pm - 2:45 pmIST-SOF
1h 25mnonstop
$143Turkish Airlines
Find Deal
Wed, Aug 27 - Wed, Sep 3
Turkish Airlines Logo
3:35 pm - 5:10 pmSOF-IST
1h 35mnonstop
Turkish Airlines Logo
1:20 pm - 2:45 pmIST-SOF
1h 25mnonstop
$144Turkish Airlines
Find Deal
Thu, Aug 7 - Sun, Aug 10
Turkish Airlines Logo
3:35 pm - 5:10 pmSOF-IST
1h 35mnonstop
Turkish Airlines Logo
7:20 am - 8:35 amIST-SOF
1h 15mnonstop
$148Turkish Airlines
Find Deal
Thu, Aug 7 - Sun, Aug 10
Turkish Airlines Logo
3:35 pm - 5:10 pmSOF-IST
1h 35mnonstop
Turkish Airlines Logo
7:20 am - 8:35 amIST-SOF
1h 15mnonstop
$153Turkish Airlines
Find Deal
Sun, Jul 20 - Thu, Jul 24
Turkish Airlines Logo
3:35 pm - 5:10 pmSOF-IST
1h 35mnonstop
Turkish Airlines Logo
1:20 pm - 2:45 pmIST-SOF
1h 25mnonstop
$156Turkish Airlines
Find Deal
Sun, Jul 20 - Mon, Jul 28
Turkish Airlines Logo
9:15 pm - 10:45 pmSOF-IST
1h 30mnonstop
Turkish Airlines Logo
1:20 pm - 2:45 pmIST-SOF
1h 25mnonstop
$159Turkish Airlines
Find Deal
Sat, Aug 23 - Sun, Aug 24
 Logo
11:15 pm - 8:30 amSOF-IST
9h 15m1 stop
 Logo
1:20 pm - 2:45 pmIST-SOF
1h 25mnonstop
Mon, Sep 1 - Sun, Sep 7
Aegean Airlines Logo
9:15 pm - 9:50 amSOF-IST
12h 35m1 stop
Aegean Airlines Logo
8:50 pm - 10:00 amIST-SOF
13h 10m1 stop
$221Aegean Airlines
Find Deal
Useful Info

KAYAK's insights & trends for Sofia to Istanbul flights

Get data-powered insights and trends into flights from Sofia to Istanbul to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Sofia to Istanbul?

The average price of all round-trip flights from Sofia to Istanbul Airport clicked on KAYAK for each day over the last 12 months.

For Sofia to Istanbul, Wednesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Istanbul back to Sofia, the best deals are generally found on Tuesday, with Monday being the most expensive.

What is the cheapest month to fly from Sofia to Istanbul Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sofia to Istanbul Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sofia to Istanbul Airport is March, where tickets cost $101 (return) on average. On the other hand, the most expensive months are November and September, where the average cost of round-trip tickets is $244 and $237 respectively.

How far in advance should I book a flight from Sofia to Istanbul Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Sofia to Istanbul Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Sofia to Istanbul Airport, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$76
Best time to beat the crowds with an average 34% drop in price.
Most popular time to fly with an average 26% increase in price.
Flight from Sofia to Istanbul

When to book flights from Sofia to Istanbul

Are your dates flexible? Find out the best times to travel from Sofia to Istanbul based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Sofia to Istanbul flights

  • What is the cheapest flight from Sofia to Istanbul Airport?

    In the last 3 days, the lowest price for a flight from Sofia to Istanbul Airport was $76 for a one-way ticket and $141 for a round-trip.

  • Do I need a passport to fly between Sofia and Istanbul?

    A passport is required to fly from Sofia to Istanbul.

  • Which airports will I be using when flying from Sofia to Istanbul?

    Sofia airport is called Sofia and the only airport in Istanbul is Istanbul.

  • Which airlines offer Wi-Fi service onboard planes from Sofia to Istanbul?

    flydubai, and Emirates offer inflight Wi-Fi service on the Sofia to Istanbul flight route.

  • Which aircraft models fly most regularly from Sofia to Istanbul?

    The Airbus A321-100/200 is the aircraft model that flies most regularly on the Sofia to Istanbul flight route.

  • Which airline alliances offer flights from Sofia to Istanbul?

    Star Alliance, and oneworld are the airline alliances operating flights between Sofia and Istanbul, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Sofia to Istanbul?

    There are nonstop flights from Sofia to Istanbul on a daily basis.

  • How does KAYAK find such low prices on flights from Sofia to Istanbul?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sofia to Istanbul.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sofia to Istanbul?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Istanbul from Sofia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sofia to Istanbul?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Istanbul with an airline and back to Sofia with another airline. Booking your flights between Sofia and IST can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sofia to Istanbul?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Istanbul from Sofia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Sofia to Istanbul Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $199 or less one-way and $627 or less round-trip.

Prefer to fly direct from Sofia to Istanbul?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Sofia to Istanbul.
Find which airlines fly direct from Sofia Airport to Istanbul Airport, which days they fly and book direct flights.

Direct departures

Sofia to Istanbul

Monday

Egyptair, IndiGo, Royal Jordanian, +2 more

Egyptair, IndiGo, +3 more

Tuesday

Egyptair, IndiGo, Royal Jordanian, +2 more

Egyptair, IndiGo, +3 more

Wednesday

Egyptair, IndiGo, Royal Jordanian, +2 more

Egyptair, IndiGo, +3 more

Thursday

Egyptair, IndiGo, Royal Jordanian, +2 more

Egyptair, IndiGo, +3 more

Friday

Egyptair, IndiGo, Royal Jordanian, +2 more

Egyptair, IndiGo, +3 more

Saturday

Egyptair, IndiGo, Royal Jordanian, +2 more

Egyptair, IndiGo, +3 more

Sunday

Egyptair, IndiGo, Royal Jordanian, +2 more

Egyptair, IndiGo, +3 more

See more direct flights

Direct returns

Istanbul to Sofia

Monday

Egyptair, IndiGo, Royal Jordanian, +2 more

Egyptair, IndiGo, +3 more

Tuesday

Egyptair, IndiGo, Royal Jordanian, +2 more

Egyptair, IndiGo, +3 more

Wednesday

Egyptair, IndiGo, Royal Jordanian, +2 more

Egyptair, IndiGo, +3 more

Thursday

Egyptair, IndiGo, Royal Jordanian, +2 more

Egyptair, IndiGo, +3 more

Friday

Egyptair, IndiGo, Royal Jordanian, +2 more

Egyptair, IndiGo, +3 more

Saturday

Egyptair, IndiGo, Royal Jordanian, +2 more

Egyptair, IndiGo, +3 more

Sunday

Egyptair, IndiGo, Royal Jordanian, +2 more

Egyptair, IndiGo, +3 more

See more direct flights

Reviews of the top airlines flying from Sofia to Istanbul

 
See real verified KAYAK customer reviews for airlines flying from Sofia to Istanbul. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sofia to Istanbul? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
Turkish AirlinesOverall score based on 3896 reviews
7.4Food
7.3Boarding
7.3Comfort
7.4Entertainment
7.7Crew
Airline reviews

Except for spending an extra day in Istanbul due to late departure from Athens on Saturday and missing the connection flight TK0044 to Cape Town and again arriving 45 min late on Monday in Cape Town, it was all good.

8.0 ExcellentAnonymous, Jul 2025ATH - IST
Read more Turkish Airlines reviews

Except for spending an extra day in Istanbul due to late departure from Athens on Saturday and missing the connection flight TK0044 to Cape Town and again arriving 45 min late on Monday in Cape Town, it was all good.

The best food I’ve ever been served on an airplane. The security at the gate was frustrating as was the heavy editing of the films and television shows offered.

The 2 agents on the check in counter were super nice , helpful and very polite. Boarding was like a 1 2 3, I would recommend Turkish airlines for your next trip.

It was an old airline with the old configuration of business class seats. Not really what we signed up for for the longest leg of the trip. Disappointing.

flight with heavy turbulence old boeing 777 rest wasnt clean dashboard doesn’t work

Very bad overall. The comfort level was undeniably uncomfortable. The in-flight entertainment was no good because my screen froze and “wasn’t able to reset”. The staff were rude and non-helpful. Instead of offering me an upgrade for all inconveniences for the ticket, and seat I paid extra for, I was offered a downgraded seat all the way at the back of the aircraft. The flight was delayed for so long, making the experience at the layover airport that much more unpleasant.

Food wasn’t nice and doesn’t have halal option

Light and recline did not work on my seat. Very uncomfortable and could not read in the dark

great. I could have used a bottle of water or two instead of having to ask everytime. great service. very comfortable

Turkish airlines have improved a lot, please keep up the good work.

Not because when i try to do check in there is only in turkish language i can not select other language

https://www.instagram.com/reel/DGVSRsasQcG/?igsh=dmkxa2s1eHNlbHZs

Don't fly Pegasus, terrible service at the airport and boarding was really bad. Both flights I took with them were significantly late. This flight had us all changing the gate at the last moment and it was chaos.withour explanation or apology. The planes have seats that don't recline and seats are really hard. The crew on board was good both flights, but that is the only positive thing I can say about this airline. It's not worth it and I won't be flying them again.

The airport staff were some of the worst I've ever flown, and I fly at least 50x every year. From the staff at the gate, to the check in staff, to the ticketing sales staff. My experience in Instanbul was so bad Ill.never fly Pegasus again. They were incredibly rude, dismissive and not helpful whatsoever. This is the worst of the worst if you want to fly a budget airline I'd go elsewhere. The airplane seats are really uncomfortable and don't recline at all, you get charged for every single thing so in the end you will pay more flying with them. The crew on the plane were the only kind people we encountered with Pegasus.

Pegasus Airlines which is the most efficient and cost worth low cost airline all over the Europe

Flight from London was delayed and we had to hurry up to catch the connecting flight to Riyadh

The crew were outstandingly kind and cheerful. We carried our cat and they offered help.

Late departure. No announcements. Boarding was a disaster. Some kind of technical issue scanning boarding passes.

Pegasus is a very efficient airline. Passengers, however are sometimes unruly. Getting up right after take off. Getting up right when we land and before getting to the gate. Switching seats to the front so she can get a better seat. It is unfair for those that actually paid for seats. Flight attendants seem to not enforce it. One or two bad actors ruins it. Overall, the airline is great.

Pegasus is not a very comfortable airline. They’re not in any way hospitable

Everything you need to know for your flight from Sofia to Istanbul

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