UA3559 PittsburghPIT · 18:01 St LouisSTL · 19:46
UA3559 by United Airlines flies from Pittsburgh (PIT) to St Louis (STL) for the Mon, Oct 19 departure.
Same number through PIT → EWR → STL
arrived at STL · 9 min early
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 operation0 cancelled · 12 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at PIT and STL are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. 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 Pittsburgh to St Louis flights today
same route · United AirlinesIf UA3559 is cancelled, these are the other United Airlines nonstop flights from Pittsburgh to St Louis on the same day, with scheduled departure times in PIT local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA3559 actually runs
Pro Flight Search has tracked every published board update for UA3559 across the PIT and STL boards: schedule changes, gate pushes and actual clocks. Usually lands ~20 min early. Based on 12 confirmed landings · 9/12 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 UA3559 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: N780YX, N747YX, N779YX, N767YX.
Board clocks recorded as PIT and STL published them.
Planning around UA3559? 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 — UA3559 Pittsburgh to St Louis on-time performance, measured from the PIT and STL airport boards.
https://proflightsearch.com/flight/UA3559
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