ON TIMEBOARD

DL 3850 on time

Delta Air Lines 3850: Detroit to Green Bay at 8:15 p.m. (past 12 months)

On time
70%
237 flights · likely 63–75%
Cancelled
1.3%
of scheduled flights
Typical arrival
−6 min
median vs schedule
When late
+93 min
average delay
Similar flights
72%
DL, same route & hour

About 1 in 3 DL 3850 flights from Detroit arrived 15+ minutes late, diverted or cancelled over the past year (30%); 1.3% were cancelled. The typical flight landed 6 minutes early.

DL 3850: DTW → GRB

Scheduled to leave Detroit at 8:15 p.m. local time, operated by SkyWest as OO 3850. Over the past year it arrived on time 70% of the time (237 flights), in line with other DL flights on the route at that hour (72%). Last seen in the data Aug 31, 2026.

Usually Delta Air Lines's last flight of the day from Detroit to Green Bay (100% of days). Delta Air Lines's last DTW–GRB flight was cancelled 1.4% of the time, against 1.9% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 10:00 a.m. the next morning.

Month by month

40%70%100%Mar 2025: 61% on time (23 flights)61MarApr 2025: 73% on time (30 flights)73AprMay 2025: 71% on time (31 flights)71MayJun 2025: too few flights (6 flights)JunJan 2026: 59% on time (27 flights)59JanFeb 2026: 74% on time (27 flights)74FebMar 2026: 52% on time (31 flights)52MarApr 2026: 67% on time (30 flights)67AprMay 2026: 68% on time (31 flights)68MayJun 2026: 87% on time (30 flights)87JunJul 2026: 63% on time (30 flights)63JulAug 2026: 87% on time (31 flights)87Aug

By day of week

DayFlightsOn time
Monday3566%
Tuesday3468%
Wednesday3465%
Thursday3482%
Friday3471%
Saturday3385%
Sunday3352%

Why it was late

Airline (crew, maintenance, ops) 67%Severe weather 24%Air traffic & airport (NAS) 8%

All flights DTW → GRB · Connecting off DL 3850? Check the risk

Questions

How often is DL 3850 from DTW to GRB late?

Delta Air Lines 3850 from Detroit, MI to Green Bay, WI arrived 15 or more minutes late, was diverted or was cancelled on 30% of 237 scheduled flights between September 2025 and August 2026. 1.3% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.