TK1421 IstanbulIST · 06:50 TallinnTLL · 10:20
TK1421 by Turkish Airlines flies from Istanbul (IST) to Tallinn (TLL) for the Wed, Aug 19 departure.
arrival expected at TLL · on schedule
board checked 36m ago · checking again in 45s
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at IST and TLL are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.
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 Tallinn flights today
same route · Turkish AirlinesIf TK1421 is cancelled, this is the other Turkish Airlines nonstop flight from Istanbul to Tallinn 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 TK1421 actually runs
Pro Flight Search has tracked every published board update for TK1421 across the IST and TLL boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: left a little late (~10 min) but landed about 26 min early. Not enough to call it.
The verdict above is that record speaking, so it reflects how TK1421 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 TLL published them.
Planning around TK1421? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — TK1421 Istanbul to Tallinn on-time performance, measured from the IST and TLL airport boards.
https://proflightsearch.com/flight/TK1421
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