DL4171 DTW → MDT

Delta Air Lines · Detroit, MI to Harrisburg, PA · 67 flights observed, 2026-01-05 to 2026-06-05 · 371 mi

This flight's reliability varies a lot by day of week — 88% on-time on Saturdays vs. 50% on Thursdays.

DL4171 covers more than one route in the data window — the stats below are for DTW → MDT, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
66%
Median delay
-2 min
90th percentile
+129 min
Cancellation rate
3%

How often is DL4171 on time?

Across 67 flights on DTW → MDT from 2026-01-05 to 2026-06-05, DL4171 arrived within 15 minutes of schedule 66% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +129 min or later. 3% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time4366%
16-30 min23%
31-60 min711%
61-120 min58%
2+ hrs812%

Performance by month

MonthFlightsOn-timeAvg delay
2026-012564%+42 min
2026-021040%+180 min
2026-052572%+15 min
2026-065100%-9 min

Performance by day of week

DayFlightsOn-time
Mon1060%
Tue1060%
Wed978%
Thu1050%
Fri1080%
Sat888%
Sun850%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…