Flight number record
DL 2397
Delta Air Lines · Atlanta to Newark
- Route
- ATL → EWR
- Departs
- 08:40
- Flights
- 355
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2397, check with Delta Air Lines.
DL 2397 earns an A−. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 50 minutes. That rests on 355 flights, with a median arrival 6 minutes early.
Set against the rest of the country, DL 2397's record is 9 points better than the US average of 77.6%. That gap is worth roughly 85 fewer late arrivals for every thousand flights.
Key figures
On time
86.1%
Arrivals under 15 minutes late, of 338 completed flights
Avg delay
52 min
Across delayed arrivals only, not all flights
Cancelled
4.79%
National rate is 1.81%
1 hour+ late
4.1%
National rate is 8.1%
These figures cover 355 flights between July 2025 and June 2026. The median arrival is 6 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.
Schedule
When DL 2397 flies
DL 2397 flies ATL to EWR without a single fixed slot. Its most common scheduled departure was 08:40, used on 54 of 355 flights, with 08:54 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 08:4054 flights15.2%
- Departs 08:5437 flights10.4%
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 08:40 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 2397 runs 2 points better at 86.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Against the route
DL 2397 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 2397 is 13 points ahead of 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 beats by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2397thin sample | 355 | 86.1% | 52 min | 4.79% | A− |
| 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 2397 quarter by quarter
Quarter by quarter DL 2397 held fairly steady: 86.9% in Jul–Sep 2025, 80.7% in Oct–Dec 2025, 87.0% in Jan–Mar 2026 and 89.9% in Apr–Jun 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202586 flights86.9%
- Oct–Dec 202592 flights80.7%
- Jan–Mar 202686 flights87.0%
- Apr–Jun 202691 flights89.9%
Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2397 did best on Wednesday at 96.0% on time and worst on Monday at 75.0%. Each day rests on about 51 flights, so a gap of 21 points is worth noticing but could still narrow in another year.
Delay causes
Why DL 2397 runs late
One category carries most of the weight here. Carrier accounts for 51% of the 2,422 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.
- 51%Carrier
- 25%National Airspace System
- 15%Late-arriving aircraft
- 10%Extreme weather
The largest share of delay minutes, 51%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,225 of the 2,422 delay minutes reported here. The split is drawn from 2,422 delay minutes reported on DL 2397.
Cancellations run at 4.79%, 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
Badly late arrivals are rare here: only 4.1% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
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 2397 is not only a ATL to EWR flight. It also flew EWR to ATL (355 flights, 80.4% 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. 355 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 | 355 | 80.4% | 62 min | 4.51% | B− |
What to do with this
Booking DL 2397
For a booking, the cancellation rate is the figure to plan around on DL 2397: 4.79% of its 355 scheduled flights did not operate. A late arrival costs roughly 50 minutes, 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 2312 on the same route69.9%
- 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.