UA3980 WashingtonIAD · 12:55 LouisvilleSDF · 14:39
UA3980 by United Airlines flies from Washington (IAD) to Louisville (SDF) for the Sun, Oct 11 departure.
arrival expected at SDF · on schedule
board checked 454m ago · checking again in 45s
The route today
live boardsWeather lens
Weather-conditioned outlook for this flight right now
Measured, 90-day sampleDriven mainly by IAD (Washington), currently flying MVFR (marginal visual). 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 Louisville flights today
same route · United AirlinesIf UA3980 is cancelled, these are the other United Airlines nonstop flights from Washington to Louisville 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 UA3980 actually runs
Pro Flight Search has tracked every published board update for UA3980 across the IAD and SDF boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: departed +76 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how UA3980 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: N57862.
Board clocks recorded as IAD and SDF published them.
Planning around UA3980? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA3980 Washington to Louisville on-time performance, measured from the IAD and SDF airport boards.
https://proflightsearch.com/flight/UA3980
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