UA4506 St LouisSTL · 08:40 WashingtonIAD · 11:54
UA4506 by United Airlines flies from St Louis (STL) to Washington (IAD) for the Sun, Sep 13 departure.
departs STL · on schedule
board checked 104m ago · checking again in 45s
⚖ UA4506 typically leaves +17 and lands −17. 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 −17 min · 0 cancelled · 15 operations tracked
The route today
live boardsWeather lens
Weather-conditioned outlook for this flight right now
Measured, 90-day sampleDriven mainly by STL (St Louis), currently flying VFR (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 St Louis to Washington flights today
same route · United AirlinesIf UA4506 is cancelled, these are the other United Airlines nonstop flights from St Louis to Washington on the same day, with scheduled departure times in STL local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA4506 actually runs
Pro Flight Search has tracked every published board update for UA4506 across the STL and IAD boards: schedule changes, gate pushes and actual clocks. Usually lands ~15 min early. Based on 14 confirmed landings · 13/14 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 UA4506 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: N547GJ, N554GJ, N540GJ, N579GJ.
Board clocks recorded as STL and IAD published them.
Planning around UA4506? 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 — UA4506 St Louis to Washington on-time performance, measured from the STL and IAD airport boards.
https://proflightsearch.com/flight/UA4506
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