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Delta Air Lines / DTW → ATW

DL 4440 on time

Delta Air Lines 4440: Detroit to Appleton at 10:05 a.m.; Appleton to Detroit at 11:09 a.m. (past 12 months). Figures below the title are for DTW → ATW, its busiest leg

On time
80%
226 flights · likely 74–84%
Cancelled
0.9%
of scheduled flights
Typical arrival
−12 min
median vs schedule
When late
+83 min
average delay
Similar flights
80%
DL, same route & hour

About 1 in 5 DL 4440 flights from Detroit arrived 15+ minutes late, diverted or cancelled over the past year (20%); 0.9% were cancelled. The typical flight landed 12 minutes early.

DL 4440: DTW → ATW

Scheduled to leave Detroit at 10:05 a.m. local time, operated by SkyWest as OO 4440. Over the past year it arrived on time 80% of the time (226 flights), in line with other DL flights on the route at that hour (80%). Last seen in the data Aug 2, 2026.

Month by month

40%70%100%Dec 2025: too few flights (12 flights)DecJan 2026: 61% on time (31 flights)61JanFeb 2026: 82% on time (28 flights)82FebMar 2026: 61% on time (31 flights)61MarApr 2026: 80% on time (30 flights)80AprMay 2026: 100% on time (31 flights)100MayJun 2026: 90% on time (30 flights)90JunJul 2026: 87% on time (31 flights)87JulAug 2026: too few flights (2 flights)Aug

By day of week

DayFlightsOn time
Monday3272%
Tuesday3278%
Wednesday3281%
Thursday3284%
Friday3281%
Saturday3391%
Sunday3370%

Why it was late

Airline (crew, maintenance, ops) 61%Severe weather 30%Air traffic & airport (NAS) 9%

All flights DTW → ATW · Connecting off DL 4440? Check the risk

DL 4440: ATW → DTW

Scheduled to leave Appleton at 11:09 a.m. local time, operated by SkyWest as OO 4440. Over the past year it arrived on time 74% of the time (226 flights), in line with other DL flights on the route at that hour (74%). Last seen in the data Aug 2, 2026.

Month by month

40%70%100%Dec 2025: too few flights (12 flights)DecJan 2026: 58% on time (31 flights)58JanFeb 2026: 82% on time (28 flights)82FebMar 2026: 45% on time (31 flights)45MarApr 2026: 70% on time (30 flights)70AprMay 2026: 100% on time (31 flights)100MayJun 2026: 83% on time (30 flights)83JunJul 2026: 84% on time (31 flights)84JulAug 2026: too few flights (2 flights)Aug

By day of week

DayFlightsOn time
Monday3263%
Tuesday3278%
Wednesday3272%
Thursday3272%
Friday3275%
Saturday3394%
Sunday3367%

Why it was late

Airline (crew, maintenance, ops) 61%Severe weather 27%Air traffic & airport (NAS) 12%

All flights ATW → DTW · Connecting off DL 4440? Check the risk

Questions

How often is DL 4440 from DTW to ATW late?

Delta Air Lines 4440 from Detroit, MI to Appleton, WI arrived 15 or more minutes late, was diverted or was cancelled on 20% of 226 scheduled flights between September 2025 and August 2026. 0.9% were cancelled.

How often is DL 4440 from ATW to DTW late?

Delta Air Lines 4440 from Appleton, WI to Detroit, MI arrived 15 or more minutes late, was diverted or was cancelled on 26% of 226 scheduled flights between September 2025 and August 2026. 0.9% 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.