DL3949 CMH → DTW

Delta Air Lines · Columbus, OH to Detroit, MI · 54 flights observed, 2025-10-06 to 2025-12-19 · 155 mi

This flight's reliability varies a lot by day of week — 88% on-time on Fridays vs. 44% on Sundays.

DL3949 covers more than one route in the data window — the stats below are for CMH → DTW, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
65%
Median delay
+3 min
90th percentile
+56 min
Cancellation rate
0%

How often is DL3949 on time?

Across 54 flights on CMH → DTW from 2025-10-06 to 2025-12-19, DL3949 arrived within 15 minutes of schedule 65% of the time. The median arrival delay was +3 min, and the worst 10% of flights arrived +56 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time3565%
16-30 min59%
31-60 min917%
61-120 min36%
2+ hrs24%

Performance by month

MonthFlightsOn-timeAvg delay
2025-101989%+3 min
2025-111856%+80 min
2025-121747%+33 min

Performance by day of week

DayFlightsOn-time
Mon1070%
Tue956%
Wed956%
Thu875%
Fri888%
Sat1100%
Sun944%

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