UA2040 BostonBOS ChicagoORD
UA2040 by United Airlines flies from Boston (BOS) to Chicago (ORD).
scheduled from BOS
The route today
live boardsWeather lens
Weather-conditioned outlook for this flight right now
Measured, 90-day sampleDriven mainly by BOS (Boston), currently flying IFR (instrument). 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 Boston to Chicago flights today
same route · United AirlinesIf UA2040 is cancelled, these are the other United Airlines nonstop flights from Boston to Chicago on the same day, with scheduled departure times in BOS local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA2040 actually runs
Pro Flight Search has tracked every published board update for UA2040 across the BOS and ORD boards: schedule changes, gate pushes and actual clocks. Combined risk score: 50.0/100. Based on airport operations, weather, and cached board history at BOS and ORD.
The verdict above is that record speaking, so it reflects how UA2040 operates rather than what the timetable promises. Numbers refresh as new flights operate.
Planning around UA2040? 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 — UA2040 Boston to Chicago on-time performance, measured from the BOS and ORD airport boards.
https://proflightsearch.com/flight/UA2040
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