$69+ Cheap flights from Sofia (SOF) to Istanbul (IST)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/22. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — IST
Oct 19 — Oct 261
Round-trip
1 adult, Economy
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Find cheap flights from Sofia to Istanbul with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Sofia to Istanbul are usually found in October or February, booked 71 days in advance, depart on a Wednesday or Friday and return on a Monday
Cheap flight deals from Sofia to Istanbul
Cheapest
Best
Last-minute
One-way
Cheapest flights from Sofia to IstanbulExplore the most affordable flight options available from Sofia to Istanbul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 19, 2026.
Explore the most affordable flight options available from Sofia to Istanbul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 19, 2026.
This Booking.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:55 am -
Nonstop1h 25m
Sun 11/82:55 pm -
Nonstop1h 15m
Deal found 9/17![Turkish Airlines logo]()
$137
This Mytrip deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/28:40 pm -
1 stop11h 35m
Mon 11/99:55 am -
1 stop9h 00m
Deal found 9/18![Multiple Airlines logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/189:35 pm -
1 stop26h 05m
Sun 10/2510:45 am -
Nonstop1h 20m
Deal found 9/18![Multiple Airlines logo]()
$173
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/304:00 pm -
Nonstop1h 30m
Fri 11/68:30 pm -
Nonstop1h 20m
Deal found 9/15![Turkish Airlines logo]()
$174
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:50 pm -
Nonstop1h 30m
Fri 10/910:30 am -
Nonstop1h 15m
Deal found 9/16![Turkish Airlines logo]()
$175
This Booking.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:50 pm -
Nonstop1h 30m
Sun 10/1111:00 am -
Nonstop1h 15m
Deal found 9/18![Turkish Airlines logo]()
$176
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/133:50 pm -
Nonstop1h 30m
Tue 10/201:45 pm -
Nonstop1h 15m
Deal found 9/15![Turkish Airlines logo]()
$177
This Air Serbia deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/204:00 pm -
1 stop11h 40m
Fri 10/234:25 am -
1 stop11h 05m
Deal found 9/17![Air Serbia logo]()
$178
This Air Serbia deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:00 am -
1 stop9h 55m
Fri 11/65:25 am -
1 stop11h 05m
Deal found 9/15![Air Serbia logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:10 pm -
Nonstop1h 30m
Fri 10/210:30 am -
Nonstop1h 15m
Deal found 9/14![Turkish Airlines logo]()
$180
Best flights from Sofia to IstanbulDiscover carefully curated flight deals from Sofia to Istanbul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 19, 2026.
Discover carefully curated flight deals from Sofia to Istanbul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 19, 2026.
This Turkish Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:55 am -
Nonstop1h 25m
Sun 11/82:55 pm -
Nonstop1h 15m
Deal found 9/16![Turkish Airlines logo]()
$138
This Air Serbia deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/285:00 am -
1 stop11h 00m
Sun 11/294:40 pm -
1 stop23h 50m
Deal found 9/19![Air Serbia logo]()
$176
This Air Serbia deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/24:00 pm -
1 stop24h 00m
Mon 11/95:45 pm -
1 stop22h 45m
Deal found 9/18![Air Serbia logo]()
$177
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/23:50 pm -
Nonstop1h 30m
Tue 10/61:45 pm -
Nonstop1h 15m
Deal found 9/16![Turkish Airlines logo]()
$192
This Air Serbia deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/124:05 pm -
1 stop11h 35m
Tue 2/165:25 am -
1 stop11h 05m
Deal found 9/18![Air Serbia logo]()
$178
This Air Serbia deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/204:00 pm -
1 stop11h 40m
Fri 10/234:25 am -
1 stop11h 05m
Deal found 9/17![Air Serbia logo]()
$178
This Air Serbia deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/274:05 pm -
1 stop23h 55m
Tue 12/15:25 am -
1 stop11h 05m
Deal found 9/17![Air Serbia logo]()
$178
This Air Serbia deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:00 am -
1 stop9h 55m
Fri 11/65:25 am -
1 stop11h 05m
Deal found 9/15![Air Serbia logo]()
$179
This Air Serbia deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/294:00 pm -
1 stop11h 40m
Sat 10/315:45 pm -
1 stop22h 45m
Deal found 9/14![Air Serbia logo]()
$179
Last-minute flights from Sofia to IstanbulDiscover last-minute flight deals from Sofia to Istanbul. Data last updated September 19, 2026 and is based on user searches.
Discover last-minute flight deals from Sofia to Istanbul. Data last updated September 19, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:10 pm -
Nonstop1h 30m
Fri 10/210:30 am -
Nonstop1h 15m
Deal found 9/14![Turkish Airlines logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/293:50 pm -
Nonstop1h 30m
Fri 10/210:30 am -
Nonstop1h 15m
Deal found 9/14![Turkish Airlines logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/303:50 pm -
Nonstop1h 30m
Fri 10/210:30 am -
Nonstop1h 15m
Deal found 9/14![Turkish Airlines logo]()
$184
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:50 pm -
Nonstop1h 30m
Fri 10/910:30 am -
Nonstop1h 15m
Deal found 9/16![Turkish Airlines logo]()
$175
This Booking.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:50 pm -
Nonstop1h 30m
Sun 10/1111:00 am -
Nonstop1h 15m
Deal found 9/18![Turkish Airlines logo]()
$176
This FlightHub deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/111:05 pm -
Nonstop1h 30m
Tue 10/137:30 am -
Nonstop1h 15m
Deal found 9/15![Turkish Airlines logo]()
$181
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/133:50 pm -
Nonstop1h 30m
Tue 10/201:45 pm -
Nonstop1h 15m
Deal found 9/15![Turkish Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/189:35 pm -
1 stop26h 05m
Sun 10/2510:45 am -
Nonstop1h 20m
Deal found 9/18![Multiple Airlines logo]()
$173
This Air Serbia deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/204:00 pm -
1 stop11h 40m
Fri 10/234:25 am -
1 stop11h 05m
Deal found 9/17![Air Serbia logo]()
$178
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/294:00 pm -
Nonstop1h 30m
Sun 11/110:45 am -
Nonstop1h 20m
Deal found 9/16![Turkish Airlines logo]()
$183
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/304:00 pm -
Nonstop1h 30m
Fri 11/68:30 pm -
Nonstop1h 20m
Deal found 9/15![Turkish Airlines logo]()
$174
This Air Serbia deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:00 am -
1 stop9h 55m
Fri 11/65:25 am -
1 stop11h 05m
Deal found 9/15![Air Serbia logo]()
$179
One-way flights from Sofia to IstanbulSearch for one-way flight options from Sofia to Istanbul. Find affordable one-way fares based on user searches. Data last updated September 19, 2026.
Search for one-way flight options from Sofia to Istanbul. Find affordable one-way fares based on user searches. Data last updated September 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2212:25 pm -
1 stop19h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Wizz Air logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1312:25 pm -
1 stop19h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Wizz Air logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/511:40 am -
1 stop12h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Wizz Air logo]()
$85
This Air Serbia deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/294:00 pm -
1 stop22h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Air Serbia logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:40 am -
1 stop12h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Wizz Air logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:20 am -
1 stop16h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$90
This Mytrip deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/222:25 pm -
1 stop7h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Wizz Air logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:35 pm -
1 stop26h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/268:55 pm -
1 stop11h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$99
This Trip.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/224:00 pm -
1 stop24h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Air Serbia logo]()
$100
This Jetabroad deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:10 pm -
Nonstop1h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Turkish Airlines logo]()
$101
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/39:10 pm -
Nonstop1h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Turkish Airlines logo]()
$102
Find flight deals from Sofia to Istanbul
Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to Istanbul (IST). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $137 (Booking.com) |
One-way from | $69 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $187 |
Good round-trip deal | $733 or less |
Good one-way deal | $187 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Sofia to Istanbul that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 19, 2026.
Use the filters below to find and compare flights from Sofia to Istanbul Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SofiaIstanbul
SOF Sofia - IST Istanbul
SOFIST
Sofia
Mon 10/5
11:40 am-11:40 pm
1 stop12h 00m
Istanbul
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$85
SofiaIstanbul
SOF Sofia - IST Istanbul
SOFIST
Sofia
Sun 2/21
4:00 pm-4:40 am
1 stop11h 40m
Istanbul
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$87
SofiaIstanbul
SOF Sofia - IST Istanbul
SOFIST
Sofia
Mon 10/19
11:40 am-11:40 pm
1 stop12h 00m
Istanbul
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$87
Quickest round-trip
SofiaIstanbul
SOF Sofia - IST Istanbul
SOFIST
Sofia
Sun 11/22
4:00 pm-6:30 pm
Nonstop1h 30m
Istanbul
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$103
SofiaIstanbul
SOF Sofia - IST Istanbul
SOFIST
Sofia
Sun 10/18
3:50 pm-5:20 pm
Nonstop1h 30m
Istanbul
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$105
SofiaIstanbul
SOF Sofia - IST Istanbul
SOFIST
Sofia
Mon 10/19
3:50 pm-5:20 pm
Nonstop1h 30m
Istanbul
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$105
SofiaIstanbul
SOF Sofia - IST Istanbul
SOFIST
Sofia
Wed 10/14
9:10 pm-10:40 pm
Nonstop1h 30m
Istanbul
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$109
SofiaIstanbul
SOF Sofia - IST Istanbul
SOFIST
Sofia
Fri 10/23
5:00 am-3:00 pm
1 stop10h 00m
Istanbul
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$113
SofiaIstanbul
SOF Sofia - IST Istanbul
SOFIST
Sofia
Sat 10/10
5:00 am-3:40 am
1 stop22h 40m
Istanbul
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$113
SofiaIstanbul
SOF Sofia - IST Istanbul
SOFIST
Sofia
Sat 12/26
4:00 pm-3:55 pm
1 stop22h 55m
Istanbul
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$113
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Sofia to Istanbul
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sofia to Istanbul in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars |
- Most accurate provider: When it comes to deals on Sofia-Istanbul Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sofia-Istanbul Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sofia-Istanbul Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Sofia-Istanbul Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sofia-Istanbul Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Sofia to Istanbul
Have a flexible travel schedule? Discover the best time to fly to Istanbul from Sofia with our price prediction graph.
SOF-IST
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Sofia to Istanbul Airport
Prices
Airlines
Delays
How far ahead should I book a flight from Sofia to Istanbul Airport?
Booking 70 days in advance of your planned departure date is, on average, the best time to get cheap flights from Sofia to Istanbul Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Sofia to Istanbul Airport?
Currently, October is the cheapest month in which you can book a flight from Sofia to Istanbul Airport (average of $116). Flying from Sofia to Istanbul Airport in June is currently the most expensive (average of $240). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SOF to IST?
Find hourly flight availability from Sofia to Istanbul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 19, 2026.
It’s optimal to fly from Sofia to Istanbul Airport at noon. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the evening.
What is the cheapest day to fly from Sofia to Istanbul Airport?
Use this chart to determine the cheapest time to fly round-trip from Sofia to Istanbul. Price data was last updated on September 19, 2026.
Travelers seeking maximum savings on their Sofia to Istanbul Airport flight should consider departing on Saturday at noon when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from Sofia to Istanbul delayed?
About 9% of weekly flights between Sofia and Istanbul have experienced delays in the past year, with the average delay time being 104 minutes.
What is the most punctual flight time for Sofia to Istanbul flights?
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Friday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Sofia to Istanbul flights?
Over the last year, Turkish Airlines have had the lowest number of delays on this route, with just 9% of flights being delayed.
Reviews of airlines servicing Istanbul
Get insights into the airlines that provide service to Istanbul. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Istanbul. Reviews last updated September 19, 2026.
Get a feel of what it's like to fly with Turkish Airlines and Pegasus Airlines from Sofia to Istanbul Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.5
Comfort
7.3
Boarding
7.3
Entertainment
7.5
Crew
7.8
Overall
7.4
Reviews
1 / 20
6.0
GoodAnonymous,Sep 2026
LAX - IST
Food
7.5
Comfort
7.3
Boarding
7.3
Entertainment
7.5
Crew
7.8
Overall
7.4
Reviews
1 / 20
6.0
GoodAnonymous,Sep 2026
LAX - IST
Food
7.5
Comfort
7.3
Boarding
7.3
Entertainment
7.5
Crew
7.8
Overall
7.4
Reviews
1 / 20
6.0
GoodAnonymous,Sep 2026
LAX - IST
Related info for your journey
Find useful and relevant information for your journey from Sofia to Istanbul. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Istanbul Airport?
Book flights to Istanbul Airport if you plan to visit one of these locationsYalova
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Top 2 airlines flying from Sofia to Istanbul
Discover the top 2 airlines that operate flights from Sofia to Istanbul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$98 | Average$137 | FlexibilityNo cancel fee | On-time82% | |
| Cheapest$136 | Average$215 | FlexibilityNo cancel fee | On-time77% |