UA4454United Airlines · STL → IAD
updated 2h ago
Route confirmed United Airlines

UA4454 St LouisSTL · 13:09 WashingtonIAD · 16:25

UA4454 by United Airlines flies from St Louis (STL) to Washington (IAD).

Right nowNext departure today Operates daily
10:47

scheduled from STL

Typical gate push+8 minmedian posted departure
Typical arrival−33 minmedian over 3 operations
Wins back in air~41 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 3 operations · gate push → arrival
0+86+173+259 min
11-06
+8 gate · −33 arrival
10-24
+8 gate · +259 arrival
10-23
+8 gate · −33 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
STLSt LouisOn-time likelySTL delay board →
IADWashingtonOn-time likelyIAD delay board →
STL→IADevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
39%Chance of 15+ min delay
2.3%Chance of cancellation
+10 minTypical airport delay in this weather

Driven mainly by STL (St Louis), currently flying MVFR (marginal visual). 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 STL

Forecast

Sat 7 Nov, local date

High10°Clikely 8°C to 12°C
Low2°Clikely 0°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.

Tomorrow at IAD

Forecast

Sat 7 Nov, local date

High15°Clikely 13°C to 17°C
Low8°Clikely 5°C to 10°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 St Louis to Washington flights today

same route · United Airlines
UA3375departs 06:00
UA4506departs 08:00
UA6292departs 08:40
UA3632departs 13:00

If UA4454 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 that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How UA4454 actually runs

Pro Flight Search has tracked every published board update for UA4454 across the STL and IAD boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 3 completed legs so far: left right on schedule but landed about 23 min early. Not enough to call it.

The verdict above is that record speaking, so it reflects how UA4454 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
11-06STL 13:09 13:17 (+8)IAD 16:25 15:52 (−33)
10-24STL 13:09 13:17 (+8)IAD 16:25 20:44 (+259)
10-23STL 13:09 13:17 (+8)IAD 16:25 15:52 (−33)

Aircraft

Recent tails: N507GJ, N511GJ, N561GJ.

Board clocks recorded as STL and IAD published them.

Planning around UA4454? 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: UA4454 St Louis to Washington on-time performance, measured from the STL and IAD airport boards.

Canonical URL
https://proflightsearch.com/flight/UA4454
How we measure this →