SOF - IST

$79 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 1/16. 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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Flight 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

Sat, Nov 29 - Sat, Dec 6
Multiple Airlines Logo
6:00 am - 9:05 pmSOF-IST
14h 05m1 stop
Multiple Airlines Logo
8:30 pm - 8:50 pmIST-SOF
1h 20mnonstop
$133Multiple Airlines
Find Deal
Sat, Nov 22 - Mon, Nov 24
Multiple Airlines Logo
6:00 am - 9:05 pmSOF-IST
14h 05m1 stop
Multiple Airlines Logo
8:30 pm - 8:50 pmIST-SOF
1h 20mnonstop
$134Multiple Airlines
Find Deal
Sat, Dec 6 - Sun, Dec 7
Multiple Airlines Logo
6:00 am - 9:05 pmSOF-IST
14h 05m1 stop
Multiple Airlines Logo
2:50 pm - 3:10 pmIST-SOF
1h 20mnonstop
$139Multiple Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
Turkish Airlines Logo
4:00 pm - 6:30 pmSOF-IST
1h 30mnonstop
Turkish Airlines Logo
2:50 pm - 3:10 pmIST-SOF
1h 20mnonstop
$142Turkish Airlines
Find Deal
Sat, Dec 6 - Sun, Dec 7
Turkish Airlines Logo
4:00 pm - 6:30 pmSOF-IST
1h 30mnonstop
Turkish Airlines Logo
2:50 pm - 3:10 pmIST-SOF
1h 20mnonstop
$143Turkish Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
Aegean Airlines Logo
8:20 pm - 3:10 amSOF-IST
5h 50m1 stop
Aegean Airlines Logo
6:30 am - 7:30 pmIST-SOF
14h 00m1 stop
$193Aegean Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
Aegean Airlines Logo
8:20 pm - 3:10 amSOF-IST
5h 50m1 stop
Aegean Airlines Logo
6:30 am - 7:30 pmIST-SOF
14h 00m1 stop
$194Aegean Airlines
Find Deal
Mon, Apr 13 - Fri, Apr 24
Air Serbia Logo
4:05 pm - 3:30 amSOF-IST
11h 25m1 stop
Air Serbia Logo
4:20 am - 2:55 amIST-SOF
22h 35m1 stop
$202Air Serbia
Find Deal
Fri, Dec 12 - Tue, Dec 16
Air Serbia Logo
5:00 am - 3:55 pmSOF-IST
9h 55m1 stop
Air Serbia Logo
5:35 pm - 3:30 pmIST-SOF
22h 55m1 stop
$203Air Serbia
Find Deal
Tue, Feb 10 - Sun, Feb 15
TAROM Logo
10:05 am - 11:25 pmSOF-IST
12h 20m1 stop
TAROM Logo
11:40 am - 7:15 pmIST-SOF
8h 35m1 stop
$223TAROM
Find Deal

Everything you should know

Top airlines
Turkish Airlines
Cheapest • from $142 (round-trip)
Turkish Airlines
Best reviews • 7.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
March
Cheapest • 26% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$133
Overall average: $201
Multiple Airlines
Sat 11/29Sat 12/6
SOF - IST • 1 stop
Cheapest non-stop
$142
Typical prices: $96-$295
Turkish Airlines
Fri 11/7Tue 11/11
SOF - IST • Non-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Istanbul!
Booking Insights

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, Tuesday 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 April, where the average cost of round-trip tickets is $201 and $177 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 1 week before departure. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$79
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 5% lower on average.
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 $79 for a one-way ticket and $133 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 is the only airline alliance operating flights between Sofia and Istanbul.

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

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

  • Which is the best airline for flights from Sofia to Istanbul, Turkish Airlines or Pegasus Airlines?

    The two airlines most popular with KAYAK users for flights from Sofia to Istanbul are Turkish Airlines and Pegasus Airlines. With an average price for the route of $245 and an overall rating of 7.3, Turkish Airlines is the most popular choice. Pegasus Airlines is also a great choice for the route, with an average price of $110 and an overall rating of 6.7.

  • 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 $238 or less one-way and $614 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

Turkish Airlines

Turkish Airlines

Tuesday

Turkish Airlines

Turkish Airlines

Wednesday

Turkish Airlines

Turkish Airlines

Thursday

Turkish Airlines

Turkish Airlines

Friday

Turkish Airlines

Turkish Airlines

Saturday

Turkish Airlines

Turkish Airlines

Sunday

Turkish Airlines

Turkish Airlines

See more direct flights

Direct returns

Istanbul to Sofia

Monday

Turkish Airlines

Turkish Airlines

Tuesday

Turkish Airlines

Turkish Airlines

Wednesday

Turkish Airlines

Turkish Airlines

Thursday

Turkish Airlines

Turkish Airlines

Friday

Turkish Airlines

Turkish Airlines

Saturday

Turkish Airlines

Turkish Airlines

Sunday

Turkish Airlines

Turkish Airlines

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 4009 reviews
7.4Food
7.3Boarding
7.4Entertainment
7.3Comfort
7.7Crew
Airline reviews

On the Boeing 777-300 aircraft there is no personalized climate control for passengers. Every time I've ever flown on this type of airplane I've been uncomfortably warm. For shorter flights (less than 5 hours) this isn't a big deal, but on longer flights where a nap is required to stay comfortable it turns into a nightmare. I love turkish airlines, but I really fo hope they upgrade their fleet. I've flown turkish air once on a newer model and had a fantastic time, so I think its the plane more than the airline.

6.0 GoodEmmett, Oct 2025ATH - IST
Read more Turkish Airlines reviews

On the Boeing 777-300 aircraft there is no personalized climate control for passengers. Every time I've ever flown on this type of airplane I've been uncomfortably warm. For shorter flights (less than 5 hours) this isn't a big deal, but on longer flights where a nap is required to stay comfortable it turns into a nightmare. I love turkish airlines, but I really fo hope they upgrade their fleet. I've flown turkish air once on a newer model and had a fantastic time, so I think its the plane more than the airline.

This is my 2nd time with the Turkish airline. Would definitely recommend. In stability we connected to Indiago would not recommend, very cramped seating. No inflight entertainment..service was inferior.

Staff friendly. Business class but issue with flat bed. Incoming Turkish flight delayed. Made connection due to fast buggy but luggage did not make it. Confusion at Delhi airport

I wouldn't know what the flight was like. AI canceled my flight reservation!! There's no way to speak to an actual human to fix the issue! NEVER AGAIN! ALWAYS BOOK YOUR FLIGHT DIRECTLY WITH THE AIRLINE NEVER GO THROUGH KAYAK OR JUSTFLY.COM!!

I really enjoyed the food, only bad part on one of my flights my screen was a bit buggy but it wasn't a big deal it was one of their older planes so I understand that happens

Paying extra for premium seats was wasted. Turkish Airlines takes 2 seats for bassinet. The lady next to me had a baby with bassinet Bassinet was in front of my seat

What I did not like was that the airline changed my seat in Bodrum to one that was not in business class. Up until that moment I was in seat 1A. Then suddenly they told me I was in seat 1K and my "tablet was not working". - meaning my tv screen. I said that was not ok and they said go tell them in Istanbul. Each Turkish Air rep that I consulted told me there were no available seats in Business class. Finally I talked to the 4 airline representatives outside the lounge. When I talked to a woman and explained I wanted to change my seat back to what I had, A lady consulted something, asked me if I signed anything, then turned to a man nearby and spoke in Turkish. The man consulted someone and spoke in Turkish to the woman. Then she said my seat was now A1. Why was my seat changed out of business class in the first place? What would have happened if I had not talked to someone at the lounge? I am totally confused.

THE SEATS ARE A JOKE!!!! YOU CALL THIS BUSINESS CLASS SEATS ? ITS A DISGRACE.. NARROW, CLAUSTRIPHOBIC SEATS CAN NEVER BE COMPENSATED FOR BY FOCUSING ON BETTER WUALITY FOOD SERVED....... THE CONFORT OF THE SEATS AND THE WIDTH & PITCH OF THE SEATS ARE WAY MORE IMP. THAN FOOD THAT TK IS FOCUSING ON... WILL NEVER FLY AGAIN EVEN IF THE PRICE OF BUSINESS CLASS SEAT IS SAME AS ECONOMY CLASS..... JAL/ QATAR/ EMIRATES HAS WAYYYY MORE COMFY SEATS

Rude staff. I would avoid using the word racist but definitely partially or discriminatory. My 72 yrs old mother who is also disabled was traveling on this flight. She was the second passenger boarded to the plane. The First elderly couple ahead of my mother were allowed to use the airplane bathroom but my mother was denied entry stating it was for safety reasons. My mother objected the the couple in front of her were allowed but hostess still stated that due to the flight safety reasons she can’t use it. Even my mother explained that he is using blood pressure medication that’s why she have to use the restroom frequently but the crew continued arguing her. At one point the Mae attendent even suggested that if that’s the case my mother can urinate in her seat. The level of disrespect against an elderly lady is beyond my comprehension. This matter will be taken to the social media to shame the employees involved.

my experience was great with Turkish airlines . the problem i encountered was with kayak booking. When I booked . it showed that im allowed a bag . and when I got to the airport, i had to pay $165 for one bag.

You adjourned my flight by 1h 30 mns and only updated me 1h30 mns before the new scheduled flight. I submitted an email to Kayak asking for a refund. It was the most stressful experience I've had.

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.

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

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