Flight number record
DL 2312
Delta Air Lines · Atlanta to Newark
- Route
- ATL → EWR
- Departs
- 14:25
- Flights
- 359
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2312, check with Delta Air Lines.
DL 2312 sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 8 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 359 flights, with a median arrival right on schedule.
The national on-time rate over the same period is 77.6%, so DL 2312 runs 8 points behind the country as a whole. Across a thousand flights that is about 77 extra late arrivals.
Key figures
On time
69.9%
Arrivals under 15 minutes late, of 339 completed flights
Avg delay
59 min
Across delayed arrivals only, not all flights
Cancelled
4.74%
National rate is 1.81%
1 hour+ late
8.3%
National rate is 8.1%
These figures cover 359 flights between July 2025 and June 2026. Beyond the headline rate, 8.3% 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 2312 flies
DL 2312 flies ATL to EWR without a single fixed slot. Its most common scheduled departure was 14:25, used on 38 of 359 flights, with 14:23 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 14:2538 flights10.6%
- Departs 14:2336 flights10.0%
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 14:25 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 2312 runs 3 points worse at 69.9%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
DL 2312 next to ATL to EWR
Every carrier on ATL to EWR combined arrived on time 72.8% of the time across 6,285 flights, so DL 2312 is 3 points behind it. Delta flew 3,055 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 81.6%, which this flight trails by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2312thin sample | 359 | 69.9% | 59 min | 4.74% | C− |
| All Delta Air Lines on ATL–EWR | 3,055 | 71.5% | 66 min | 3.31% | C− |
| All carriers on ATL–EWR | 6,285 | 72.8% | 74 min | 3.34% | C− |
| Delta Air Lines, whole network | 1,038,570 | 81.6% | 71 min | 1.62% | B |
Across the year
DL 2312 quarter by quarter
DL 2312 did not run the same all year. Its best quarter was Apr–Jun 2026 at 84.9% on time and its weakest Jan–Mar 2026 at 63.8%, a swing of 21 points on roughly 90 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 202592 flights65.5%
- Oct–Dec 202592 flights65.1%
- Jan–Mar 202687 flights63.8%
- Apr–Jun 202688 flights84.9%
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2312 did best on Wednesday at 78.4% on time and worst on Sunday at 60.0%. Each day rests on about 51 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Delay causes
Why DL 2312 runs late
One category carries most of the weight here. National Airspace System accounts for 61% of the 5,998 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
- 32%Carrier
- 5%Late-arriving aircraft
- 2%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 3,662 minutes out of 5,998, against a national NAS share of 21%. The split is drawn from 5,998 delay minutes reported on DL 2312.
Cancellations run at 4.74%, 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
8.3% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
DL 2312 is not only a ATL to EWR flight. It also flew EWR to ATL (306 flights, 70.0% 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. 359 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 ATLthin sample | 306 | 70.0% | 88 min | 4.90% | C− |
What to do with this
Booking DL 2312
For a booking, the cancellation rate is the figure to plan around on DL 2312: 4.74% of its 359 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
- ATL to EWR, every carrier and departure
- EWR to ATL, the return direction
- Delta Air Lines 2322 on the same route74.4%
- Frontier Airlines 4602 on the same route56.0%
- Delta Air Lines 2397 on the same route86.1%
- Delta Air Lines 2498 on the same route56.2%
- Frontier Airlines 1158 on the same route69.4%
- Delta Air Lines 2527 on the same route62.7%
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.