UA4172 New YorkEWR · 11:00 WashingtonDCA · 12:29
UA4172 by United Airlines flies from New York (EWR) to Washington (DCA) for the Thu, Oct 29 departure.
arrived at DCA · 89 min late
⚖ UA4172 typically leaves −6 and lands −29. 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 −29 min · 0 cancelled · 15 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at EWR and DCA are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records 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 →
Tomorrow on this route
ForecastNew York to Washington with United Airlines · Fri 30 Oct, local date
- Chance a departure is cancelled
- 0.8%0.2× usual
- Chance a departure leaves 60+ min late
- 8.0%0.7× usual
Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 9 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other New York to Washington flights today
same route · United AirlinesIf UA4172 is cancelled, these are the other United Airlines nonstop flights from New York to Washington on the same day, with scheduled departure times in EWR local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →
How UA4172 actually runs
Pro Flight Search has tracked every published board update for UA4172 across the EWR and DCA boards: schedule changes, gate pushes and actual clocks. Usually lands ~10 min early. Based on 14 confirmed landings · 11/14 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA4172 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: N511GJ, N569GJ, N538GJ, N564GJ.
Board clocks recorded as EWR and DCA published them.
Planning around UA4172? 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: UA4172 New York to Washington on-time performance, measured from the EWR and DCA airport boards.
https://proflightsearch.com/flight/UA4172
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