UA4251United Airlines · GSO → IAD
updated 4h ago
Route confirmed United Airlines

UA4251 GreensboroGSO WashingtonIAD · 07:17

UA4251 by United Airlines flies from Greensboro (GSO) to Washington (IAD).

Right nowNext departure today Operates daily
12:00

scheduled from GSO

Typical arrival−26 minmedian over 3 operations

Where the minutes go

last 3 operations · gate push → arrival
0+30+60+90 min
10-23
−26 arrival
10-22
−29 arrival
10-21
−25 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
GSOGreensboroOn-time likelyGSO delay board →
IADWashingtonOn-time likelyIAD delay board →
GSO→IADevery carrier, schedules and on-time historyRoute intelligence →

Tomorrow at IAD

Forecast

Thu 5 Nov, local date

High23°Clikely 20°C to 25°C
Low17°Clikely 12°C to 19°C
  • 94% chance of rain

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.

How UA4251 actually runs

Pro Flight Search has tracked every published board update for UA4251 across the GSO and IAD boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 3 completed legs so far: landed -7 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how UA4251 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
10-23GSO IAD 07:17 06:51 (−26)
10-22GSO IAD 07:17 06:48 (−29)
10-21GSO IAD 07:17 06:52 (−25)

Aircraft

Recent tails: N11150, N16170, N12142.

Board clocks recorded as GSO and IAD published them.

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: UA4251 Greensboro to Washington on-time performance, measured from the GSO and IAD airport boards.

Canonical URL
https://proflightsearch.com/flight/UA4251
How we measure this →