Flight number record

DL 2397

Delta Air Lines · Newark to Atlanta

Route: EWR → ATL
Departs: 12:00
Flights: 361
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2397, check with Delta Air Lines.

DL 2397 lands a B−, 4 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 361 flights, with a median arrival 11 minutes early.

On time

81.0%

Arrivals under 15 minutes late, of 336 completed flights

Avg delay

79 min

Across delayed arrivals only, not all flights

Cancelled

5.82%

National rate is 1.89%

1 hour+ late

8.0%

National rate is 8.3%

These figures cover 361 flights between September 2025 and August 2026. Beyond the headline rate, 8.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Schedule

When DL 2397 flies

DL 2397 flies EWR to ATL without a single fixed slot. Its most common scheduled departure was 12:00, used on 141 of 361 flights.

Departs 12:00141 flights39.1%

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 12:00 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 2397 runs 3 points better at 81.0%. 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 2397 next to EWR to ATL

Every carrier on EWR to ATL combined arrived on time 76.9% of the time across 6,252 flights, so DL 2397 is 4 points ahead of it. Delta flew 3,038 flights on the same city pair under all its flight numbers, including this one, and those ran 79.3% on time. Across its whole network Delta Air Lines managed 81.1%, close to this flight's figure.

DL 2397 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2397thin sample	361	81.0%	79 min	5.82%	B−
All Delta Air Lines on EWR–ATL	3,038	79.3%	95 min	3.95%	B−
All carriers on EWR–ATL	6,252	76.9%	89 min	3.85%	B−
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	B

Across the year

DL 2397 quarter by quarter

DL 2397 did not run the same all year. Its best quarter was Apr–Jun 2026 at 86.2% on time and its weakest Oct–Dec 2025 at 71.3%, a swing of 15 points on roughly 72 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 202530 flights83.3%
Oct–Dec 202592 flights71.3%
Jan–Mar 202686 flights84.4%
Apr–Jun 202691 flights86.2%
Jul–Sep 202662 flights81.8%

Scale runs 65% to 90%.

By weekday, DL 2397 did best on Wednesday at 88.2% on time and worst on Tuesday at 72.9%. Each day rests on about 52 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late DL 2397 runs when it is late

DL 2397 often beats the schedule: 138 of 336 completed flights, 41%, arrived 15 minutes or more early. The 64 late arrivals split 21 under half an hour, 16 between 30 and 60 minutes, and 27 an hour or more.

15+ min early138 flights41.1%
Within 15 min134 flights39.9%
15–29 min late21 flights6.3%
30–59 min late16 flights4.8%
1–2 hours late18 flights5.4%
2+ hours late9 flights2.7%

Scale runs 0% to 100%.

Share of 336 completed flights by arrival against schedule.

18 of 64 late departures made up the time and arrived on time, 28% of them. In the other direction, 18 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 ATL.

The worst days

Worst days for DL 2397

The latest arrival of the period was on 21 July 2026, 8 hours behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across July, May, October and March, with no single month standing out.

The latest arrivals of DL 2397 in the period
Date	Arrived late by	Largest filed cause
21 July 2026	8 hours	Extreme weather
2 July 2026	6 hours 1 minute	Carrier
20 May 2026	5 hours 19 minutes	Carrier
30 October 2025	4 hours 30 minutes	Extreme weather
16 March 2026	4 hours 17 minutes	Late-arriving aircraft

Delay causes

Why DL 2397 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 5,027 reported delay minutes.

Late-arriving aircraft
32%
Carrier
31%
National Airspace System
22%
Extreme weather
14%

Extreme weather accounts for 14% 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 2.3 times the usual weather exposure. The split is drawn from 5,027 delay minutes reported on DL 2397.

Cancellations run at 5.82%, against 1.89% nationally. That is roughly one flight in fifteen 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

8.0% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over 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.

DL 2397 is not only a EWR to ATL flight. It also flew ATL to EWR (361 flights, 85.3% 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. 361 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.

Other routes flown as DL 2397
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
ATL to EWRthin sample	361	85.3%	50 min	5.54%	A−

What to do with this

Booking DL 2397

For a booking, the cancellation rate is the figure to plan around on DL 2397: 5.82% of its 361 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.

Where to go next

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 22 October 2026; recomputed monthly. How this data is collected.

Key figures