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Delta Air Lines / DTW → CVG

DL 5257 on time

Delta Air Lines 5257: Detroit to Cincinnati at 12:15 p.m.; Cincinnati to Detroit at 2:15 p.m. (past 12 months). Figures below the title are for DTW → CVG, its busiest leg

On time
78%
346 flights · likely 73–82%
Cancelled
0.6%
of scheduled flights
Typical arrival
−8 min
median vs schedule
When late
+78 min
average delay
Similar flights
78%
DL, same route & hour

About 1 in 5 DL 5257 flights from Detroit arrived 15+ minutes late, diverted or cancelled over the past year (22%); 0.6% were cancelled. The typical flight landed 8 minutes early.

DL 5257: DTW → CVG

Scheduled to leave Detroit at 12:15 p.m. local time, operated by Endeavor Air as 9E 5257. Over the past year it arrived on time 78% of the time (346 flights), in line with other DL flights on the route at that hour (78%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 90% on time (30 flights)90SepOct 2025: 84% on time (31 flights)84OctNov 2025: 86% on time (29 flights)86NovDec 2025: 53% on time (19 flights)53DecJan 2026: 59% on time (27 flights)59JanFeb 2026: 79% on time (28 flights)79FebMar 2026: 81% on time (31 flights)81MarApr 2026: 82% on time (28 flights)82AprMay 2026: 68% on time (31 flights)68MayJun 2026: 83% on time (30 flights)83JunJul 2026: 84% on time (31 flights)84JulAug 2026: 77% on time (31 flights)77Aug

By day of week

DayFlightsOn time
Monday5176%
Tuesday5080%
Wednesday4980%
Thursday4986%
Friday5076%
Saturday4883%
Sunday4965%

Why it was late

Late inbound plane 46%Airline (crew, maintenance, ops) 44%Air traffic & airport (NAS) 8%Severe weather 3%

All flights DTW → CVG · Connecting off DL 5257? Check the risk

DL 5257: CVG → DTW

Scheduled to leave Cincinnati at 2:15 p.m. local time, operated by Endeavor Air as 9E 5257. Over the past year it arrived on time 76% of the time (147 flights), in line with other DL flights on the route at that hour (78%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%May 2025: 80% on time (20 flights)80MayJun 2025: too few flights (6 flights)JunJul 2025: 56% on time (25 flights)56JulAug 2025: too few flights (10 flights)AugDec 2025: too few flights (12 flights)DecJan 2026: too few flights (4 flights)JanFeb 2026: too few flights (14 flights)FebMar 2026: too few flights (6 flights)MarMay 2026: 61% on time (23 flights)61MayJun 2026: 83% on time (30 flights)83JunJul 2026: 71% on time (31 flights)71JulAug 2026: 78% on time (27 flights)78Aug

By day of week

DayFlightsOn time
Monday2277%
Tuesday2171%
Wednesday2171%
Thursday2387%
Friday2378%
Saturday14—
Sunday2370%

Why it was late

Late inbound plane 65%Airline (crew, maintenance, ops) 19%Air traffic & airport (NAS) 9%Severe weather 7%

All flights CVG → DTW · Connecting off DL 5257? Check the risk

Questions

How often is DL 5257 from DTW to CVG late?

Delta Air Lines 5257 from Detroit, MI to Cincinnati, OH arrived 15 or more minutes late, was diverted or was cancelled on 22% of 346 scheduled flights between September 2025 and August 2026. 0.6% were cancelled.

How often is DL 5257 from CVG to DTW late?

Delta Air Lines 5257 from Cincinnati, OH to Detroit, MI arrived 15 or more minutes late, was diverted or was cancelled on 24% of 147 scheduled flights between September 2025 and August 2026. 0.0% 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.