UA3904 ChicagoORD WashingtonIAD
UA3904 by United Airlines flies from Chicago (ORD) to Washington (IAD).
scheduled from ORD
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at ORD and IAD 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 Chicago to Washington flights today
same route · United AirlinesIf UA3904 is cancelled, these are the other United Airlines nonstop flights from Chicago to Washington on the same day, with scheduled departure times in ORD local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA3904 actually runs
Pro Flight Search has tracked every published board update for UA3904 across the ORD and IAD boards: schedule changes, gate pushes and actual clocks. Combined risk score: 24.4/100. Based on airport operations, weather, and cached board history at ORD and IAD.
The verdict above is that record speaking, so it reflects how UA3904 operates rather than what the timetable promises. Numbers refresh as new flights operate.
Planning around UA3904? 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 — UA3904 Chicago to Washington on-time performance, measured from the ORD and IAD airport boards.
https://proflightsearch.com/flight/UA3904
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