Flight number record
DL 2787
Delta Air Lines · Denver to Detroit
- Route
- DEN → DTW
- Departs
- 10:25
- Flights
- 318
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2787, check with Delta Air Lines.
DL 2787 earns a B+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 318 flights, with a median arrival 7 minutes early.
Set against the rest of the country, DL 2787's record is 7 points better than the US average of 77.3%. That gap is worth roughly 70 fewer late arrivals for every thousand flights.
Key figures
On time
84.3%
Arrivals under 15 minutes late, of 318 completed flights
Avg delay
74 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
6.9%
National rate is 8.3%
These figures cover 318 flights between September 2025 and August 2026. The median arrival is 7 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When DL 2787 flies
DL 2787 flies DEN to DTW without a single fixed slot. Its most common scheduled departure was 10:25, used on 93 of 318 flights, with 10:24 (76 flights) and 10:19 (63 flights) next.
- Departs 10:2593 flights29.2%
- Departs 10:2476 flights23.9%
- Departs 10:1963 flights19.8%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 10:25 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 2787 runs level with that at 84.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
DL 2787 next to DEN to DTW
Every carrier on DEN to DTW combined arrived on time 78.1% of the time across 3,109 flights, so DL 2787 is 6 points ahead of it. Delta flew 1,247 flights on the same city pair under all its flight numbers, including this one, and those ran 86.8% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2787thin sample | 318 | 84.3% | 74 min | 0.00% | B+ |
| All Delta Air Lines on DEN–DTW | 1,247 | 86.8% | 79 min | 0.32% | A+ |
| All carriers on DEN–DTW | 3,109 | 78.1% | 66 min | 0.55% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2787 quarter by quarter
DL 2787 did not run the same all year. Its best quarter was Jul–Sep 2026 at 91.9% on time and its weakest Jan–Mar 2026 at 77.9%, a swing of 14 points on roughly 64 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights86.7%
- Oct–Dec 202580 flights81.2%
- Jan–Mar 202686 flights77.9%
- Apr–Jun 202660 flights88.3%
- Jul–Sep 202662 flights91.9%
Scale runs 70% to 95%.
By weekday, DL 2787 did best on Sunday at 91.1% on time and worst on Friday at 75.6%. Each day rests on about 45 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2787 runs when it is late
The 50 late arrivals split 13 under half an hour, 15 between 30 and 60 minutes, and 22 an hour or more.
- 15+ min early79 flights24.8%
- Within 15 min189 flights59.4%
- 15–29 min late13 flights4.1%
- 30–59 min late15 flights4.7%
- 1–2 hours late16 flights5.0%
- 2+ hours late6 flights1.9%
Scale runs 0% to 100%.
Share of 318 completed flights by arrival against schedule.
11 of 54 late departures made up the time and arrived on time, 20% of them. 7 flights left on time and still arrived late.
The worst days
Worst days for DL 2787
The latest arrival of the period was on 8 October 2025, 7 hours 10 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 8 October 2025 | 7 hours 10 minutes | Carrier |
| 3 December 2025 | 4 hours 59 minutes | Carrier |
| 13 June 2026 | 3 hours 12 minutes | Late-arriving aircraft |
| 19 December 2025 | 2 hours 54 minutes | Late-arriving aircraft |
| 19 February 2026 | 2 hours 50 minutes | Late-arriving aircraft |
Delay causes
Why DL 2787 runs late
Late-arriving aircraft accounts for 63% of the 3,684 delay minutes carriers reported here, and the remaining four split what is left.
- 63%Late-arriving aircraft
- 30%Carrier
- 7%National Airspace System
- 0%Extreme weather
63% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,684 reported delay minutes here, that single category outweighs weather by 63 to one. The split is drawn from 3,684 delay minutes reported on DL 2787.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
6.9% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
The 1,123 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on two other city pairs in the data, including ATL to SGF (1) and SGF to ATL (1), but none flew often enough under DL 2787 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to DTW only.
One caution: this is a thin sample. 318 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking DL 2787
For a booking, read DL 2787 as 84.3% on time with 0.00% cancelled over 318 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to DTW, every carrier and departure
- DTW to DEN, the return direction
- Delta Air Lines 1745 on the same route90.9%
- United Airlines 1220 on the same route69.3%
- Denver International (DEN) delay statistics
- Detroit Metropolitan Wayne County (DTW) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means Delta Air Lines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.