Istanbul to Sofia (IST-SOF): nonstop upgrade & award space

Turkish Airlines flies nonstop between Istanbul (IST) and Sofia (SOF), roughly 23 times a week. With Turkish Airlines running most of the schedule, the shape of a week is predictable, which makes an open premium seat on a given date easy to spot and quick to lose. 2LNR tracks award seats on Turkish Airlines across every IST to SOF date, so you can see whether a seat exists before you move points.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

See IST to SOF on the interactive map Get started free
23
Nonstop flights a week
303 mi
Nonstop distance
Free
To get started

Istanbul to Sofia flight schedule

Scheduled nonstop departures for IST to SOF, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Istanbul (IST) to Sofia (SOF)
Date Flight Airline Departs IST Arrives SOF Duration Aircraft
TK 1027Turkish Airlines07:3008:451h 15m32Q
TK 1031Turkish Airlines13:4515:001h 15m32B
TK 1029Turkish Airlines18:5520:201h 25m32B
TK 1027Turkish Airlines07:3008:451h 15m32Q
TK 1031Turkish Airlines13:4515:001h 15m321
TK 1029Turkish Airlines18:5520:201h 25m321
TK 1027Turkish Airlines07:3008:451h 15m32Q
TK 1031Turkish Airlines13:4515:001h 15m32B
TK 1029Turkish Airlines18:5520:201h 25m32B
TK 1027Turkish Airlines07:3008:451h 15m32B
TK 1127Turkish Airlines10:3011:451h 15m73H
TK 1031Turkish Airlines13:4515:001h 15m73H
TK 1029Turkish Airlines18:5520:201h 25m32B
TK 1027Turkish Airlines07:3008:451h 15m32Q
TK 1031Turkish Airlines13:4515:001h 15m32B
TK 1029Turkish Airlines18:5520:201h 25m32B
TK 1027Turkish Airlines07:3008:451h 15m32Q
TK 1127Turkish Airlines11:0012:151h 15m73H
TK 1031Turkish Airlines13:4515:001h 15m32B
TK 1029Turkish Airlines18:5520:201h 25m32B
TK 1027Turkish Airlines07:3008:451h 15m7M9
TK 1031Turkish Airlines13:4515:001h 15m32B
TK 1029Turkish Airlines18:5520:201h 25m32B

Showing all 23 scheduled IST to SOF departures across the next 7 days with service. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every IST to SOF date on the interactive map

Award seats on IST to SOF departures

2LNR tracks award seats on Turkish Airlines, date by date. Open the calendar for Istanbul to Sofia to see whether a seat exists before you move points, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each IST to SOF departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See IST to SOF on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Istanbul to Sofia nonstop

Carriers operating IST to SOF nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See IST to SOF on the interactive map →

Frequently asked questions about IST to SOF

How far is Sofia from Istanbul?
IST to SOF covers about 303 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from IST to SOF?
Turkish Airlines is currently the only airline flying IST to SOF nonstop. 2LNR tracks award seats on Turkish Airlines.
How many flights a week are there from IST to SOF?
About 23 nonstop flights a week run between Istanbul and Sofia in the current schedule, operated by Turkish Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from IST to SOF depart?
Scheduled IST to SOF nonstops in the next 7 days with service leave between 07:30 and 18:55, local time at Istanbul. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
How do I check upgrade or award availability on IST to SOF?
Open the IST to SOF route on the interactive map or the matrix to see award seats by date on Turkish Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss IST to SOF upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

Get started free