TK1021 IstanbulIST · 07:25 SarajevoSJJ · 08:20
TK1021 by Turkish Airlines flies from Istanbul (IST) to Sarajevo (SJJ) for the Wed, Sep 23 departure.
arrival expected at SJJ · on schedule
board checked 33m ago · checking again in 45s
Where the minutes go
last 7 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival −5 min · 0 cancelled · 8 operations tracked
The route today
live boardsWeather lens
Weather-conditioned outlook for this flight right now
Measured, 90-day sampleDriven mainly by IST (Istanbul), currently flying MVFR (marginal visual). For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Istanbul to Sarajevo flights today
same route · Turkish AirlinesIf TK1021 is cancelled, these are the other Turkish Airlines nonstop flights from Istanbul to Sarajevo on the same day, with scheduled departure times in IST local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How TK1021 actually runs
Pro Flight Search has tracked every published board update for TK1021 across the IST and SJJ boards: schedule changes, gate pushes and actual clocks. Usually lands ~5 min early. Based on 6 confirmed landings · 6/6 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how TK1021 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as IST and SJJ published them.
Planning around TK1021? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — TK1021 Istanbul to Sarajevo on-time performance, measured from the IST and SJJ airport boards.
https://proflightsearch.com/flight/TK1021
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