UA421 WashingtonIAD · 22:18 ChicagoORD · 23:32
UA421 by United Airlines flies from Washington (IAD) to Chicago (ORD) for the Wed, Oct 21 departure.
estimated arrival at ORD · local time · ~1h 53m from now
position updated 4m ago · checking again in 90s
Live position · flown path, last 5h 0m
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at IAD and ORD 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 Chicago flights today
same route · United AirlinesIf UA421 is cancelled, these are the other United Airlines nonstop flights from Washington to Chicago on the same day, with scheduled departure times in IAD local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA421 actually runs
Pro Flight Search has tracked every published board update for UA421 across the IAD and ORD boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: landed +21 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how UA421 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: N14509, N24516.
Board clocks recorded as IAD and ORD published them.
Planning around UA421? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA421 Washington to Chicago on-time performance, measured from the IAD and ORD airport boards.
https://proflightsearch.com/flight/UA421
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