AA3546 St LouisSTL · 08:54 BostonBOS · 12:40
AA3546 by American Airlines flies from St Louis (STL) to Boston (BOS) for the Sun, Sep 20 departure.
departs STL · on schedule
board checked 37m ago · checking again in 45s
Where the minutes go
last 3 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
Early read, sample still buildingConditions at STL and BOS 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 St Louis to Boston flights today
same route · American AirlinesIf AA3546 is cancelled, these are the other American Airlines nonstop flights from St Louis to Boston on the same day, with scheduled departure times in STL local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How AA3546 actually runs
Pro Flight Search has tracked every published board update for AA3546 across the STL and BOS boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 3 completed legs so far: landed -24 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how AA3546 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 STL and BOS published them.
Planning around AA3546? 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 — AA3546 St Louis to Boston on-time performance, measured from the STL and BOS airport boards.
https://proflightsearch.com/flight/AA3546
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