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

Turkish Airlines flies nonstop between Sofia (SOF) and Istanbul (IST), 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 SOF to IST 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.

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23
Nonstop flights a week
303 mi
Nonstop distance
Free
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Sofia to Istanbul flight schedule

Scheduled nonstop departures for SOF to IST, 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 Sofia (SOF) to Istanbul (IST)
Date Flight Airline Departs SOF Arrives IST Duration Aircraft
TK 1028Turkish Airlines09:3511:051h 30m32Q
TK 1032Turkish Airlines15:5017:201h 30m73H
TK 1030Turkish Airlines21:1022:401h 30m32B
TK 1028Turkish Airlines09:3511:051h 30m32Q
TK 1032Turkish Airlines15:5017:201h 30m321
TK 1030Turkish Airlines21:1022:401h 30m321
TK 1028Turkish Airlines09:3511:051h 30m32Q
TK 1032Turkish Airlines15:5017:201h 30m73H
TK 1030Turkish Airlines21:1022:401h 30m32B
TK 1028Turkish Airlines09:3511:051h 30m32Q
TK 1128Turkish Airlines12:3514:051h 30m32B
TK 1032Turkish Airlines15:5017:201h 30m73H
TK 1030Turkish Airlines21:1022:401h 30m32B
TK 1028Turkish Airlines09:3511:051h 30m32Q
TK 1032Turkish Airlines15:5017:201h 30m32B
TK 1030Turkish Airlines21:1022:401h 30m32B
TK 1028Turkish Airlines09:3511:051h 30m32B
TK 1128Turkish Airlines13:0514:351h 30m73H
TK 1032Turkish Airlines15:5017:201h 30m73H
TK 1030Turkish Airlines21:1022:401h 30m32B
TK 1028Turkish Airlines09:3511:051h 30m32Q
TK 1032Turkish Airlines15:5017:201h 30m32B
TK 1030Turkish Airlines21:1022:401h 30m32B

Showing all 23 scheduled SOF to IST 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 SOF to IST date on the interactive map

Award seats on SOF to IST departures

2LNR tracks award seats on Turkish Airlines, date by date. Open the calendar for Sofia to Istanbul 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 SOF to IST 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 SOF to IST on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Sofia to Istanbul nonstop

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

See SOF to IST on the interactive map →

Frequently asked questions about SOF to IST

How far is Istanbul from Sofia?
SOF to IST 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 SOF to IST?
Turkish Airlines is currently the only airline flying SOF to IST nonstop. 2LNR tracks award seats on Turkish Airlines.
How many flights a week are there from SOF to IST?
About 23 nonstop flights a week run between Sofia and Istanbul 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 SOF to IST depart?
Scheduled SOF to IST nonstops in the next 7 days with service leave between 09:35 and 21:10, local time at Sofia. 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 SOF to IST?
Open the SOF to IST 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 SOF to IST 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