ON TIMEBOARD

DL 1648 on time

Delta Air Lines 1648: Detroit to Denver at 12:50 p.m.; Denver to Detroit at 2:59 p.m. (past 12 months). Figures below the title are for DTW → DEN, its busiest leg

On time
84%
364 flights · likely 79–87%
Cancelled
0.3%
of scheduled flights
Typical arrival
−7 min
median vs schedule
When late
+60 min
average delay
Similar flights
85%
DL, same route & hour

About 1 in 6 DL 1648 flights from Detroit arrived 15+ minutes late, diverted or cancelled over the past year (16%); 0.3% were cancelled. The typical flight landed 7 minutes early.

DL 1648: DTW → DEN

Scheduled to leave Detroit at 12:50 p.m. local time. Over the past year it arrived on time 84% of the time (364 flights), in line with other DL flights on the route at that hour (85%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 90% on time (30 flights)90SepOct 2025: 94% on time (31 flights)94OctNov 2025: 72% on time (29 flights)72NovDec 2025: 74% on time (31 flights)74DecJan 2026: 81% on time (31 flights)81JanFeb 2026: 82% on time (28 flights)82FebMar 2026: 81% on time (31 flights)81MarApr 2026: 97% on time (30 flights)97AprMay 2026: 90% on time (31 flights)90MayJun 2026: 77% on time (30 flights)77JunJul 2026: 77% on time (31 flights)77JulAug 2026: 87% on time (31 flights)87Aug

By day of week

DayFlightsOn time
Monday5381%
Tuesday5281%
Wednesday5290%
Thursday5180%
Friday5287%
Saturday5287%
Sunday5279%

Why it was late

Airline (crew, maintenance, ops) 43%Air traffic & airport (NAS) 27%Late inbound plane 25%Severe weather 5%

All flights DTW → DEN · Connecting off DL 1648? Check the risk

DL 1648: DEN → DTW

Scheduled to leave Denver at 2:59 p.m. local time. Over the past year it arrived on time 82% of the time (204 flights), in line with other DL flights on the route at that hour (83%). Last seen in the data Aug 2, 2026.

Usually Delta Air Lines's last flight of the day from Denver to Detroit (100% of days). Delta Air Lines's last DEN–DTW flight was cancelled 0.3% of the time, against 0.3% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 12:59 a.m. the next morning.

Month by month

40%70%100%Jul 2025: 81% on time (31 flights)81JulAug 2025: 77% on time (31 flights)77AugSep 2025: 81% on time (27 flights)81SepOct 2025: 96% on time (26 flights)96OctNov 2025: 92% on time (25 flights)92NovDec 2025: 72% on time (29 flights)72DecJan 2026: too few flights (4 flights)JanMar 2026: 79% on time (24 flights)79MarApr 2026: too few flights (12 flights)AprJun 2026: 79% on time (24 flights)79JunJul 2026: 74% on time (31 flights)74JulAug 2026: too few flights (2 flights)Aug

By day of week

DayFlightsOn time
Monday3181%
Tuesday3187%
Wednesday3187%
Thursday3077%
Friday3083%
Saturday18—
Sunday3379%

Why it was late

Late inbound plane 56%Airline (crew, maintenance, ops) 23%Air traffic & airport (NAS) 13%Severe weather 8%

All flights DEN → DTW · Connecting off DL 1648? Check the risk

Questions

How often is DL 1648 from DTW to DEN late?

Delta Air Lines 1648 from Detroit, MI to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 16% of 364 scheduled flights between September 2025 and August 2026. 0.3% were cancelled.

How often is DL 1648 from DEN to DTW late?

Delta Air Lines 1648 from Denver, CO to Detroit, MI arrived 15 or more minutes late, was diverted or was cancelled on 18% of 204 scheduled flights between September 2025 and August 2026. 0.5% 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.