UA4584United Airlines · PHL → IAD
live · 18m ago
Route confirmed United Airlines

UA4584 PhiladelphiaPHL WashingtonIAD

UA4584 by United Airlines flies from Philadelphia (PHL) to Washington (IAD).

Right nowNext departure tomorrow Operates daily
15:08

scheduled from PHL

The route today

live boards
PHLPhiladelphiaOn-time likelyPHL delay board →
IADWashingtonOn-time likelyIAD delay board →
PHL→IADevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
34%Chance of 15+ min delay
2.1%Chance of cancellation
+4 minTypical airport delay in this weather

Conditions at PHL and IAD 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 at Philadelphia

Forecast

Tue 10 Nov, local date

High18°Clikely 17°C to 19°C
Low6°Clikely 5°C to 8°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Washington

Forecast

Tue 10 Nov, local date

High21°Clikely 19°C to 22°C
Low3°Clikely 2°C to 5°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Philadelphia to Washington flights today

same route · United Airlines
UA1591departs 06:00
UA3547departs 06:00
UA4494departs 06:00
UA3676departs 10:30
UA4077departs 10:30
UA4402departs 10:30

If UA4584 is cancelled, these are the other United Airlines nonstop flights from Philadelphia to Washington on the same day, with scheduled departure times in PHL 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 UA4584 actually runs

Pro Flight Search has tracked every published board update for UA4584 across the PHL and IAD boards: schedule changes, gate pushes and actual clocks. Combined risk score: 1.0/100. Based on airport operations, weather, and cached board history at PHL and IAD.

The verdict above is that record speaking, so it reflects how UA4584 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA4584? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: UA4584 Philadelphia to Washington on-time performance, measured from the PHL and IAD airport boards.

Canonical URL
https://proflightsearch.com/flight/UA4584
How we measure this →