UA4939 IthacaITH WashingtonIAD · 07:31
UA4939 by United Airlines flies from Ithaca (ITH) to Washington (IAD) for the Fri, Sep 25 departure.
arrived at IAD · 56 min late
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 operationmedian arrival −21 min · 0 cancelled · 15 operations tracked
The route today
live boardsHow UA4939 actually runs
Pro Flight Search has tracked every published board update for UA4939 across the ITH and IAD boards: schedule changes, gate pushes and actual clocks. Usually lands ~20 min early. Based on 14 confirmed landings · 13/14 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA4939 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: N14177, N12175, N21144, N17169.
Board clocks recorded as ITH and IAD published them.
Planning around UA4939? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA4939 Ithaca to Washington on-time performance, measured from the ITH and IAD airport boards.
https://proflightsearch.com/flight/UA4939
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