AA4521 New YorkLGA · 19:59 BuffaloBUF · 21:31
AA4521 by American Airlines flies from New York (LGA) to Buffalo (BUF) for the Thu, Sep 10 departure.
departs LGA · on schedule
board checked 26m 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 +26 min · 3 cancelled · 13 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at LGA and BUF 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 New York to Buffalo flights today
same route · American AirlinesIf AA4521 is cancelled, these are the other American Airlines nonstop flights from New York to Buffalo on the same day, with scheduled departure times in LGA local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How AA4521 actually runs
Pro Flight Search has tracked every published board update for AA4521 across the LGA and BUF boards: schedule changes, gate pushes and actual clocks. Usually lands ~31 min late. Based on 10 confirmed landings · 5/10 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how AA4521 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: N101HQ, N136HQ, N427YX, N135HQ.
Board clocks recorded as LGA and BUF published them.
Planning around AA4521? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — AA4521 New York to Buffalo on-time performance, measured from the LGA and BUF airport boards.
https://proflightsearch.com/flight/AA4521
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