UA5421 DenverDEN · 14:01 LubbockLBB
UA5421 by United Airlines flies from Denver (DEN) to Lubbock (LBB) for the Thu, Sep 17 departure.
departs DEN · on schedule
board checked 23m ago · checking again in 45s
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 · 10 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 Denver to Lubbock flights today
same route · United AirlinesIf UA5421 is cancelled, this is the other United Airlines nonstop flight from Denver to Lubbock on the same day, with scheduled departure times in DEN local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA5421 actually runs
Pro Flight Search has tracked every published board update for UA5421 across the DEN and LBB boards: schedule changes, gate pushes and actual clocks. Usually departs ~5 min early. Based on 10 confirmed departures · 9/10 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA5421 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: N784SK, N530GJ, N682SK, N762SK.
Board clocks recorded as DEN and LBB published them.
Planning around UA5421? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA5421 Denver to Lubbock on-time performance, measured from the DEN and LBB airport boards.
https://proflightsearch.com/flight/UA5421
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