ON TIMEBOARD

DL 4274 on time

Delta Air Lines 4274: Detroit to Alpena at 8:40 a.m.; Alpena to Detroit at 10:30 a.m. (past 12 months). Figures below the title are for DTW → APN, its busiest leg

On time
77%
363 flights · likely 73–81%
Cancelled
4.7%
of scheduled flights
Typical arrival
−12 min
median vs schedule
When late
+83 min
average delay
Similar flights
76%
DL, same route & hour

About 1 in 4 DL 4274 flights from Detroit arrived 15+ minutes late, diverted or cancelled over the past year (23%); 4.7% were cancelled. The typical flight landed 12 minutes early.

DL 4274: DTW → APN

Scheduled to leave Detroit at 8:40 a.m. local time, operated by SkyWest as OO 4274. Over the past year it arrived on time 77% of the time (363 flights), in line with other DL flights on the route at that hour (76%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 97% on time (30 flights)97SepOct 2025: 87% on time (31 flights)87OctNov 2025: 76% on time (29 flights)76NovDec 2025: 68% on time (31 flights)68DecJan 2026: 53% on time (30 flights)53JanFeb 2026: 64% on time (28 flights)64FebMar 2026: 55% on time (31 flights)55MarApr 2026: 73% on time (30 flights)73AprMay 2026: 81% on time (31 flights)81MayJun 2026: 97% on time (30 flights)97JunJul 2026: 90% on time (31 flights)90JulAug 2026: 87% on time (31 flights)87Aug

By day of week

DayFlightsOn time
Monday5374%
Tuesday5277%
Wednesday5277%
Thursday5176%
Friday5180%
Saturday5281%
Sunday5277%

Why it was late

Airline (crew, maintenance, ops) 74%Severe weather 21%Air traffic & airport (NAS) 4%

All flights DTW → APN · Connecting off DL 4274? Check the risk

DL 4274: APN → DTW

Scheduled to leave Alpena at 10:30 a.m. local time, operated by SkyWest as OO 4274. Over the past year it arrived on time 79% of the time (363 flights), in line with other DL flights on the route at that hour (77%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 100% on time (30 flights)100SepOct 2025: 90% on time (31 flights)90OctNov 2025: 76% on time (29 flights)76NovDec 2025: 58% on time (31 flights)58DecJan 2026: 70% on time (30 flights)70JanFeb 2026: 64% on time (28 flights)64FebMar 2026: 58% on time (31 flights)58MarApr 2026: 77% on time (30 flights)77AprMay 2026: 77% on time (31 flights)77MayJun 2026: 100% on time (30 flights)100JunJul 2026: 81% on time (31 flights)81JulAug 2026: 90% on time (31 flights)90Aug

By day of week

DayFlightsOn time
Monday5381%
Tuesday5277%
Wednesday5283%
Thursday5175%
Friday5178%
Saturday5283%
Sunday5273%

Why it was late

Airline (crew, maintenance, ops) 69%Severe weather 28%Air traffic & airport (NAS) 3%

All flights APN → DTW · Connecting off DL 4274? Check the risk

Questions

How often is DL 4274 from DTW to APN late?

Delta Air Lines 4274 from Detroit, MI to Alpena, MI arrived 15 or more minutes late, was diverted or was cancelled on 23% of 363 scheduled flights between September 2025 and August 2026. 4.7% were cancelled.

How often is DL 4274 from APN to DTW late?

Delta Air Lines 4274 from Alpena, MI to Detroit, MI arrived 15 or more minutes late, was diverted or was cancelled on 21% of 363 scheduled flights between September 2025 and August 2026. 5.0% 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.