Flight number record
DL 2573
Delta Air Lines · Detroit to Newark
- Route
- DTW → EWR
- Departs
- 14:15
- Flights
- 330
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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, 5 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 330 flights, with a median arrival 4 minutes early.
The national on-time rate over the same period is 77.3%, so DL 2573 runs 5 points behind the country as a whole. Across a thousand flights that is about 51 extra late arrivals.
Key figures
On time
72.2%
Arrivals under 15 minutes late, of 313 completed flights
Avg delay
62 min
Across delayed arrivals only, not all flights
Cancelled
4.85%
National rate is 1.89%
1 hour+ late
10.2%
National rate is 8.3%
These figures cover 330 flights between September 2025 and August 2026. Beyond the headline rate, 10.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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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 122 of 330 flights, with 14:10 (48 flights) and 14:17 (38 flights) next.
- Departs 14:15122 flights37.0%
- Departs 14:1048 flights14.5%
- Departs 14:1738 flights11.5%
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 14:15 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 2573 runs level with that at 72.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 2573 next to DTW to EWR
Every carrier on DTW to EWR combined arrived on time 77.4% of the time across 3,642 flights, so DL 2573 is 5 points behind it. Delta flew 1,612 flights on the same city pair under all its flight numbers, including this one, and those ran 75.4% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2573thin sample | 330 | 72.2% | 62 min | 4.85% | C− |
| All Delta Air Lines on DTW–EWR | 1,612 | 75.4% | 78 min | 3.91% | B− |
| All carriers on DTW–EWR | 3,642 | 77.4% | 76 min | 5.55% | B− |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | 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 Oct–Dec 2025 at 64.0%, a swing of 14 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 202528 flights—
- Oct–Dec 202592 flights64.0%
- Jan–Mar 202666 flights74.2%
- Apr–Jun 202688 flights77.9%
- Jul–Sep 202656 flights74.5%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2573 did best on Tuesday at 80.9% on time and worst on Sunday at 53.7%. Each day rests on about 47 flights, so a gap of 27 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2573 runs when it is late
DL 2573 often beats the schedule: 84 of 313 completed flights, 27%, arrived 15 minutes or more early. The 87 late arrivals split 28 under half an hour, 27 between 30 and 60 minutes, and 32 an hour or more.
- 15+ min early84 flights26.8%
- Within 15 min142 flights45.4%
- 15–29 min late28 flights8.9%
- 30–59 min late27 flights8.6%
- 1–2 hours late20 flights6.4%
- 2+ hours late12 flights3.8%
Scale runs 0% to 100%.
Share of 313 completed flights by arrival against schedule.
13 of 80 late departures made up the time and arrived on time, 16% of them. In the other direction, 20 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at EWR.
The worst days
Worst days for DL 2573
The latest arrival of the period was on 6 September 2025, 4 hours 44 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 September 2025 | 4 hours 44 minutes | National Airspace System |
| 30 October 2025 | 3 hours 31 minutes | National Airspace System |
| 8 August 2026 | 3 hours 28 minutes | Extreme weather |
| 9 August 2026 | 2 hours 55 minutes | Carrier |
| 19 July 2026 | 2 hours 36 minutes | National Airspace System |
Delay causes
Why DL 2573 runs late
National Airspace System accounts for 50% of the 5,397 delay minutes carriers reported here, and the remaining four split what is left.
- 50%National Airspace System
- 35%Carrier
- 11%Late-arriving aircraft
- 4%Extreme weather
The largest share of delay minutes, 35%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,880 of the 5,397 delay minutes reported here. The split is drawn from 5,397 delay minutes reported on DL 2573.
Cancellations run at 4.85%, against 1.89% 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
10.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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 (325 flights, 73.7% 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. 330 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 | 325 | 73.7% | 116 min | 5.23% | C− |
What to do with this
Booking DL 2573
For a booking, the cancellation rate is the figure to plan around on DL 2573: 4.85% of its 330 scheduled flights did not operate. A late arrival costs about 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 route81.4%
- Delta Air Lines 2609 on the same route70.6%
- Delta Air Lines 2566 on the same route90.1%
- 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.