AA4373 WashingtonDCA · 12:59 BostonBOS · 14:42
AA4373 by American Airlines flies from Washington (DCA) to Boston (BOS) for the Fri, Aug 21 departure.
en route from DCA to BOS
board checked 122m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 15:03 · typical taxi-out at DCA ≈ 7 min.
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 +0 min · 0 cancelled · 14 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at DCA 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.
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 Washington to Boston flights today
same route · American AirlinesIf AA4373 is cancelled, these are the other American Airlines nonstop flights from Washington to Boston on the same day, with scheduled departure times in DCA local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How AA4373 actually runs
Pro Flight Search has tracked every published board update for AA4373 across the DCA and BOS boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 14 confirmed landings · 8/14 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how AA4373 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: N411YX, N107HQ, N437YX, N106HQ.
Board clocks recorded as DCA and BOS published them.
Planning around AA4373? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — AA4373 Washington to Boston on-time performance, measured from the DCA and BOS airport boards.
https://proflightsearch.com/flight/AA4373
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