Flight number record
DL 2552
Delta Air Lines · Atlanta to Newark
- Route
- ATL → EWR
- Departs
- 22:50
- Flights
- 308
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2552, check with Delta Air Lines.
DL 2552 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 77.3%. The late ones land a little over an hour behind schedule. That rests on 308 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.3%, so DL 2552 runs 9 points behind the country as a whole. Across a thousand flights that is about 88 extra late arrivals.
Key figures
On time
68.5%
Arrivals under 15 minutes late, of 298 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
2.92%
National rate is 1.89%
1 hour+ late
12.8%
National rate is 8.3%
These figures cover 308 flights between September 2025 and August 2026. Beyond the headline rate, 12.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 2552 flies
DL 2552 flies ATL to EWR without a single fixed slot. Its most common scheduled departure was 22:50, used on 72 of 308 flights, with 22:40 (66 flights) and 21:50 (63 flights) next.
- Departs 22:5072 flights23.4%
- Departs 22:4066 flights21.4%
- Departs 21:5063 flights20.5%
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 22:50 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 2552 runs level with that at 68.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
DL 2552 next to ATL to EWR
Every carrier on ATL to EWR combined arrived on time 72.3% of the time across 6,246 flights, so DL 2552 is 4 points behind it. Delta flew 3,038 flights on the same city pair under all its flight numbers, including this one, and those ran 71.5% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2552thin sample | 308 | 68.5% | 77 min | 2.92% | C |
| All Delta Air Lines on ATL–EWR | 3,038 | 71.5% | 69 min | 3.82% | C− |
| All carriers on ATL–EWR | 6,246 | 72.3% | 78 min | 3.78% | C− |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2552 quarter by quarter
DL 2552 did not run the same all year. Its best quarter was Apr–Jun 2026 at 73.4% on time and its weakest Jul–Sep 2026 at 59.3%, a swing of 14 points on roughly 77 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 202526 flights—
- Oct–Dec 202592 flights66.7%
- Jan–Mar 202663 flights67.8%
- Apr–Jun 202665 flights73.4%
- Jul–Sep 202662 flights59.3%
Scale runs 50% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2552 did best on Wednesday at 78.1% on time and worst on Sunday at 59.6%. Each day rests on about 44 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2552 runs when it is late
The 94 late arrivals split 23 under half an hour, 33 between 30 and 60 minutes, and 38 an hour or more.
- 15+ min early67 flights22.5%
- Within 15 min137 flights46.0%
- 15–29 min late23 flights7.7%
- 30–59 min late33 flights11.1%
- 1–2 hours late27 flights9.1%
- 2+ hours late11 flights3.7%
Scale runs 0% to 100%.
Share of 298 completed flights by arrival against schedule.
13 of 100 late departures made up the time and arrived on time, 13% of them. 7 flights left on time and still arrived late.
The worst days
Worst days for DL 2552
The latest arrival of the period was on 26 December 2025, 12 hours 17 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as national airspace system delay.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 December 2025 | 12 hours 17 minutes | Extreme weather |
| 4 September 2025 | 11 hours 1 minute | National Airspace System |
| 18 July 2026 | 4 hours 40 minutes | National Airspace System |
| 16 March 2026 | 3 hours 44 minutes | Carrier |
| 4 July 2026 | 3 hours 11 minutes | National Airspace System |
Delay causes
Why DL 2552 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 7,265 reported delay minutes.
- 41%Carrier
- 26%National Airspace System
- 22%Late-arriving aircraft
- 11%Extreme weather
Extreme weather accounts for 11% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 1.8 times the usual weather exposure. The split is drawn from 7,265 delay minutes reported on DL 2552.
Cancellations run at 2.92%, against 1.89% nationally. That is roughly one flight in 30 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
12.8% 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.
The 746 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.
Every one of the 308 flights under DL 2552 in the data flew ATL to EWR. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 308 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 2552
For a booking, the cancellation rate is the figure to plan around on DL 2552: 2.92% of its 308 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
- ATL to EWR, every carrier and departure
- EWR to ATL, the return direction
- Delta Air Lines 2397 on the same route85.3%
- Delta Air Lines 2322 on the same route74.5%
- Delta Air Lines 2312 on the same route71.6%
- Frontier Airlines 4602 on the same route55.4%
- Delta Air Lines 2498 on the same route53.8%
- Frontier Airlines 1158 on the same route61.9%
- Hartsfield-Jackson Atlanta International (ATL) 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
- What a cancellation rate actually tells you (and what it hides)
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.