UA4451 WashingtonIAD · 08:30 BurlingtonBTV · 10:07
UA4451 by United Airlines flies from Washington (IAD) to Burlington (BTV) for the Mon, Oct 12 departure.
departs IAD · on schedule
board checked 7m ago · checking again in 45s
⚖ UA4451 typically leaves +13 and lands −18. The air wins minutes back.Where the minutes go
last 7 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival −18 min · 0 cancelled · 14 operations tracked
The route today
live boardsWeather lens
Weather-conditioned outlook for this flight right now
Early read, sample still buildingDriven mainly by IAD (Washington), currently flying MVFR (marginal visual). 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 Washington to Burlington flights today
same route · United AirlinesIf UA4451 is cancelled, these are the other United Airlines nonstop flights from Washington to Burlington 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 UA4451 actually runs
Pro Flight Search has tracked every published board update for UA4451 across the IAD and BTV boards: schedule changes, gate pushes and actual clocks. Usually lands ~17 min early. Based on 12 confirmed landings · 11/12 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how UA4451 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: N538GJ, N554GJ, N515GJ, N511GJ.
Board clocks recorded as IAD and BTV published them.
Planning around UA4451? 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 — UA4451 Washington to Burlington on-time performance, measured from the IAD and BTV airport boards.
https://proflightsearch.com/flight/UA4451
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