6E4040 San FranciscoSFO · 12:50 IstanbulIST
6E4040 by IndiGo flies from San Francisco (SFO) to Istanbul (IST) for the Tue, Sep 8 departure.
en route from SFO to IST
board checked 26m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 13:12 · typical taxi-out at SFO ≈ 13.1 min. No receiver coverage over open ocean.
Where the minutes go
last 5 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 operation0 cancelled · 5 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at SFO and IST 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.
How 6E4040 actually runs
Pro Flight Search has tracked every published board update for 6E4040 across the SFO and IST boards: schedule changes, gate pushes and actual clocks. Usually departs ~22 min late. Based on 5 confirmed departures · 0/5 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how 6E4040 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 SFO and IST published them.
Planning around 6E4040? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — 6E4040 San Francisco to Istanbul on-time performance, measured from the SFO and IST airport boards.
https://proflightsearch.com/flight/6E4040
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