Flight number record

DL 2398

Delta Air Lines · Atlanta to New York

Route: ATL → JFK
Departs: 15:59
Flights: 362
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2398, check with Delta Air Lines.

DL 2398 lands a B, 2 points worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 362 flights, with a median arrival 7 minutes early.

On time

76.1%

Arrivals under 15 minutes late, of 355 completed flights

Avg delay

99 min

Across delayed arrivals only, not all flights

Cancelled

1.66%

National rate is 1.81%

1 hour+ late

12.1%

National rate is 8.1%

These figures cover 362 flights between July 2025 and June 2026. Beyond the headline rate, 12.1% 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 2398 flies

DL 2398 flies ATL to JFK without a single fixed slot. Its most common scheduled departure was 15:59, used on 64 of 362 flights, with 15:15 (55 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:5964 flights17.7%
Departs 15:1555 flights15.2%

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 15:59 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 2398 runs 4 points better at 76.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 2398 next to ATL to JFK

Every carrier on ATL to JFK combined arrived on time 75.3% of the time across 4,263 flights, so DL 2398 is about level with it. Delta flew 2,448 flights on the same city pair under all its flight numbers, including this one, and those ran 79.7% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 6 points.

DL 2398 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2398thin sample	362	76.1%	99 min	1.66%	B
All Delta Air Lines on ATL–JFK	2,448	79.7%	75 min	1.51%	B
All carriers on ATL–JFK	4,263	75.3%	83 min	2.35%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2398 quarter by quarter

Quarter by quarter DL 2398 held fairly steady: 75.6% in Jul–Sep 2025, 74.7% in Oct–Dec 2025, 80.5% in Jan–Mar 2026 and 73.6% in Apr–Jun 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202589 flights75.6%
Oct–Dec 202592 flights74.7%
Jan–Mar 202690 flights80.5%
Apr–Jun 202691 flights73.6%

Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2398 did best on Wednesday at 82.7% on time and worst on Sunday at 69.4%. Each day rests on about 52 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2398 runs late

One category carries most of the weight here. National Airspace System accounts for 54% of the 8,383 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.

National Airspace System
54%
Carrier
34%
Late-arriving aircraft
10%
Extreme weather
1%

54% 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 4,537 minutes out of 8,383, against a national NAS share of 21%. The split is drawn from 8,383 delay minutes reported on DL 2398.

Cancellations sit at 1.66% against a national 1.81%, which is ordinary. Diversions add another 0.28%.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 12.1% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

The 760 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.

Every one of the 362 flights under DL 2398 in the data flew ATL to JFK. 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. 362 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 2398

For a booking, DL 2398 is a flight to put a long connection behind. 12.1% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures