Flight number record

DL 915

Delta Air Lines · Los Angeles to New York

Route: LAX → JFK
Departs: 23:55
Flights: 338
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 915, check with Delta Air Lines.

DL 915 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 11 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 338 flights, with a median arrival 15 minutes early.

Set against the rest of the country, DL 915's record is 11 points better than the US average of 77.6%. That gap is worth roughly 112 fewer late arrivals for every thousand flights.

On time

88.8%

Arrivals under 15 minutes late, of 331 completed flights

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

1.78%

National rate is 1.81%

1 hour+ late

3.0%

National rate is 8.1%

These figures cover 338 flights between July 2025 and June 2026. The median arrival is 15 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 915 flies

DL 915 flies LAX to JFK without a single fixed slot. Its most common scheduled departure was 23:55, used on 264 of 338 flights, with 23:50 (38 flights) and 23:59 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 23:55264 flights78.1%
Departs 23:5038 flights11.2%
Departs 23:5936 flights10.7%

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 23:55 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 915 runs 18 points better at 88.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

DL 915 next to LAX to JFK

Every carrier on LAX to JFK combined arrived on time 79.1% of the time across 10,287 flights, so DL 915 is 10 points ahead of it. Delta flew 3,358 flights on the same city pair under all its flight numbers, including this one, and those ran 81.6% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 7 points.

DL 915 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 915thin sample	338	88.8%	72 min	1.78%	A
All Delta Air Lines on LAX–JFK	3,358	81.6%	93 min	1.79%	B
All carriers on LAX–JFK	10,287	79.1%	92 min	2.04%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 915 quarter by quarter

Quarter by quarter DL 915 held fairly steady: 92.3% in Jul–Sep 2025, 89.6% in Oct–Dec 2025, 82.4% in Jan–Mar 2026 and 89.9% in Apr–Jun 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights92.3%
Oct–Dec 202578 flights89.6%
Jan–Mar 202677 flights82.4%
Apr–Jun 202691 flights89.9%

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 915 ranged from 83.7% on Monday to 93.8% on Thursday. With about 48 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 915 runs late

One category carries most of the weight here. Carrier accounts for 77% of the 2,644 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.

Carrier
77%
Late-arriving aircraft
13%
National Airspace System
10%

The largest share of delay minutes, 77%, 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 2,039 of the 2,644 delay minutes reported here. The split is drawn from 2,644 delay minutes reported on DL 915.

Cancellations sit at 1.78% against a national 1.81%, which is ordinary. Diversions add another 0.30%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 3.0% 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.

At 2,475 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The same number turns up on one other city pair in the data, including ATL to HSV (12), but none flew often enough under DL 915 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAX to JFK only.

One caution: this is a thin sample. 338 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 915

For a booking, read DL 915 as 88.8% on time with 1.78% cancelled over 338 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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