UA4517 St LouisSTL · 10:53 Allentown/BethlehemABE · 12:28
UA4517 by United Airlines flies from St Louis (STL) to Allentown/Bethlehem (ABE) for the Thu, Sep 10 departure.
Same number through STL → ORD → ABE
departs STL · 52 min late
board checked 36m ago · checking again in 45s
Where the minutes go
last 5 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 · 5 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at STL and ABE 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. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.
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 St Louis to Allentown/Bethlehem flights today
same route · United AirlinesIf UA4517 is cancelled, these are the other United Airlines nonstop flights from St Louis to Allentown/Bethlehem on the same day, with scheduled departure times in STL local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA4517 actually runs
Pro Flight Search has tracked every published board update for UA4517 across the STL and ABE boards: schedule changes, gate pushes and actual clocks. Usually lands ~12 min early. Based on 6 confirmed landings · 4/6 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 UA4517 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: N542GJ, N523GJ, N576GJ, N537GJ.
Board clocks recorded as STL and ABE published them.
Planning around UA4517? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA4517 St Louis to Allentown/Bethlehem on-time performance, measured from the STL and ABE airport boards.
https://proflightsearch.com/flight/UA4517
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