UA4383 WashingtonIAD · 12:45 Greenville/Greer/SpartanburgGSP
UA4383 by United Airlines flies from Washington (IAD) to Greenville/Greer/Spartanburg (GSP) for the Tue, Aug 18 departure.
en route from IAD to GSP
board checked 181m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 12:55 · typical taxi-out at IAD ≈ 9 min.
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 · 8 operations tracked
The route today
live boardsWhen it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Washington to Greenville/Greer/Spartanburg flights today
same route · United AirlinesIf UA4383 is cancelled, these are the other United Airlines nonstop flights from Washington to Greenville/Greer/Spartanburg on the same day, with scheduled departure times in IAD local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA4383 actually runs
Pro Flight Search has tracked every published board update for UA4383 across the IAD and GSP boards: schedule changes, gate pushes and actual clocks. Usually departs ~33 min late. Based on 8 confirmed departures · 3/8 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA4383 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: N545GJ, N561GJ, N576GJ, N503GJ.
Board clocks recorded as IAD and GSP published them.
Planning around UA4383? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA4383 Washington to Greenville/Greer/Spartanburg on-time performance, measured from the IAD and GSP airport boards.
https://proflightsearch.com/flight/UA4383
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