DL4159 DetroitDTW · 20:50 AppletonATW
DL4159 by Delta Air Lines flies from Detroit (DTW) to Appleton (ATW) for the Wed, Oct 21 departure.
en route from DTW to ATW
board checked 389m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 20:59.
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 · 15 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 Detroit to Appleton flights today
same route · Delta Air LinesIf DL4159 is cancelled, these are the other Delta Air Lines nonstop flights from Detroit to Appleton on the same day, with scheduled departure times in DTW local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How DL4159 actually runs
Pro Flight Search has tracked every published board update for DL4159 across the DTW and ATW boards: schedule changes, gate pushes and actual clocks. Usually departs ~12 min late. Based on 14 confirmed departures · 9/14 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how DL4159 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: N897SK, N820SK, N822SK, N813SK.
Board clocks recorded as DTW and ATW published them.
Planning around DL4159? 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 — DL4159 Detroit to Appleton on-time performance, measured from the DTW and ATW airport boards.
https://proflightsearch.com/flight/DL4159
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