UA3999 HartfordBDL WashingtonIAD
UA3999 by United Airlines flies from Hartford (BDL) to Washington (IAD).
scheduled from BDL
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at BDL 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.
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 Hartford to Washington flights today
same route · United AirlinesIf UA3999 is cancelled, these are the other United Airlines nonstop flights from Hartford to Washington on the same day, with scheduled departure times in BDL local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA3999 actually runs
Pro Flight Search has tracked every published board update for UA3999 across the BDL and IAD boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at BDL and IAD.
The verdict above is that record speaking, so it reflects how UA3999 operates rather than what the timetable promises. Numbers refresh as new flights operate.
Planning around UA3999? 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 — UA3999 Hartford to Washington on-time performance, measured from the BDL and IAD airport boards.
https://proflightsearch.com/flight/UA3999
.