AA3857 BostonBOS · 12:32 ColumbusCMH · 14:46
AA3857 by American Airlines flies from Boston (BOS) to Columbus (CMH) for the Tue, Sep 8 departure.
departs BOS · on schedule
board checked 7m ago · checking again in 45s
Where the minutes go
last 4 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at BOS and CMH 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.
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 Boston to Columbus flights today
same route · American AirlinesIf AA3857 is cancelled, these are the other American Airlines nonstop flights from Boston to Columbus on the same day, with scheduled departure times in BOS local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How AA3857 actually runs
Pro Flight Search has tracked every published board update for AA3857 across the BOS and CMH boards: schedule changes, gate pushes and actual clocks. Usually departs ~36 min late. Based on 4 confirmed departures · 2/4 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how AA3857 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 BOS and CMH published them.
Planning around AA3857? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — AA3857 Boston to Columbus on-time performance, measured from the BOS and CMH airport boards.
https://proflightsearch.com/flight/AA3857
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