Flight number record
DL 2573
Delta Air Lines · Detroit to Newark
- Route
- DTW → EWR
- Departs
- 14:15
- Flights
- 332
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2573, check with Delta Air Lines.
DL 2573 sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 9 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 332 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.6%, so DL 2573 runs 9 points behind the country as a whole. Across a thousand flights that is about 90 extra late arrivals.
Key figures
On time
68.6%
Arrivals under 15 minutes late, of 315 completed flights
Avg delay
70 min
Across delayed arrivals only, not all flights
Cancelled
5.12%
National rate is 1.81%
1 hour+ late
11.4%
National rate is 8.1%
These figures cover 332 flights between July 2025 and June 2026. Beyond the headline rate, 11.4% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Schedule
When DL 2573 flies
DL 2573 flies DTW to EWR without a single fixed slot. Its most common scheduled departure was 14:15, used on 114 of 332 flights, with 14:17 (43 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 14:15114 flights34.3%
- Departs 14:1743 flights13.0%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 14:15 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 2573 runs 4 points worse at 68.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
DL 2573 next to DTW to EWR
Every carrier on DTW to EWR combined arrived on time 75.8% of the time across 3,764 flights, so DL 2573 is 7 points behind it. Delta flew 1,621 flights on the same city pair under all its flight numbers, including this one, and those ran 74.0% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2573thin sample | 332 | 68.6% | 70 min | 5.12% | C− |
| All Delta Air Lines on DTW–EWR | 1,621 | 74.0% | 81 min | 3.45% | C− |
| All carriers on DTW–EWR | 3,764 | 75.8% | 78 min | 5.05% | B− |
| Delta Air Lines, whole network | 1,038,570 | 81.6% | 71 min | 1.62% | B |
Across the year
DL 2573 quarter by quarter
DL 2573 did not run the same all year. Its best quarter was Apr–Jun 2026 at 77.9% on time and its weakest Jul–Sep 2025 at 59.3%, a swing of 19 points on roughly 83 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 202586 flights59.3%
- Oct–Dec 202592 flights64.0%
- Jan–Mar 202666 flights74.2%
- Apr–Jun 202688 flights77.9%
Scale runs 50% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2573 did best on Tuesday at 77.6% on time and worst on Sunday at 56.1%. Each day rests on about 47 flights, so a gap of 21 points is worth noticing but could still narrow in another year.
Delay causes
Why DL 2573 runs late
One category carries most of the weight here. National Airspace System accounts for 61% of the 6,907 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 61%National Airspace System
- 27%Carrier
- 8%Late-arriving aircraft
- 4%Extreme weather
61% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 4,203 minutes out of 6,907, against a national NAS share of 21%. The split is drawn from 6,907 delay minutes reported on DL 2573.
Cancellations run at 5.12%, against 1.81% nationally. That is about one flight in twenty cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 11.4% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
DL 2573 is not only a DTW to EWR flight. It also flew EWR to DTW (327 flights, 71.2% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 332 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| EWR to DTWthin sample | 327 | 71.2% | 107 min | 5.50% | C− |
What to do with this
Booking DL 2573
For a booking, the cancellation rate is the figure to plan around on DL 2573: 5.12% of its 332 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- DTW to EWR, every carrier and departure
- EWR to DTW, the return direction
- Delta Air Lines 2577 on the same route80.1%
- Delta Air Lines 2609 on the same route69.6%
- Delta Air Lines 2566 on the same route89.8%
- Detroit Metropolitan Wayne County (DTW) delay statistics
- Newark Liberty International (EWR) 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
- How often a connection fails at the major US hubs
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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.