Flight number record
DL 915
Delta Air Lines · Los Angeles to New York
- Route
- LAX → JFK
- Departs
- 23:55
- Flights
- 338
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 915, check with Delta Air Lines.
DL 915 lands a B, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 338 flights, with a median arrival 11 minutes early.
Set against the rest of the country, DL 915's record is 6 points better than the US average of 77.3%. That gap is worth roughly 63 fewer late arrivals for every thousand flights.
Key figures
On time
83.6%
Arrivals under 15 minutes late, of 330 completed flights
Avg delay
61 min
Across delayed arrivals only, not all flights
Cancelled
2.37%
National rate is 1.89%
1 hour+ late
5.5%
National rate is 8.3%
These figures cover 338 flights between September 2025 and August 2026. The median arrival is 11 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.
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Schedule
When DL 915 flies
DL 915 is scheduled to leave Los Angeles (LAX) at 23:55 local time and reach New York (JFK) at 08:30. That slot held for 287 of the 338 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 23:55287 flights84.9%
- Departs 23:5936 flights10.7%
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 23:55 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 915 runs 14 points better at 83.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
DL 915 next to LAX to JFK
Every carrier on LAX to JFK combined arrived on time 77.5% of the time across 10,289 flights, so DL 915 is 6 points ahead of it. Delta flew 3,367 flights on the same city pair under all its flight numbers, including this one, and those ran 79.4% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 915thin sample | 338 | 83.6% | 61 min | 2.37% | B |
| All Delta Air Lines on LAX–JFK | 3,367 | 79.4% | 87 min | 2.61% | B |
| All carriers on LAX–JFK | 10,289 | 77.5% | 90 min | 2.90% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 915 quarter by quarter
DL 915 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Jul–Sep 2026 at 63.3%, a swing of 30 points on roughly 68 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 flights93.3%
- Oct–Dec 202578 flights89.6%
- Jan–Mar 202677 flights82.4%
- Apr–Jun 202691 flights89.9%
- Jul–Sep 202662 flights63.3%
Scale runs 55% to 100%.
By weekday, DL 915 did best on Wednesday at 92.0% on time and worst on Monday at 76.0%. Each day rests on about 48 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 915 runs when it is late
DL 915 often beats the schedule: 143 of 330 completed flights, 43%, arrived 15 minutes or more early. The 54 late arrivals split 22 under half an hour, 14 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early143 flights43.3%
- Within 15 min133 flights40.3%
- 15–29 min late22 flights6.7%
- 30–59 min late14 flights4.2%
- 1–2 hours late15 flights4.5%
- 2+ hours late3 flights0.9%
Scale runs 0% to 100%.
Share of 330 completed flights by arrival against schedule.
A late pushback is often recovered here: of 53 departures that left 15 minutes late or more, 18 still arrived on time. In the other direction, 19 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 JFK.
The worst days
Worst days for DL 915
The latest arrival of the period was on 11 February 2026, 12 hours 45 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 11 February 2026 | 12 hours 45 minutes | Carrier |
| 17 July 2026 | 2 hours 50 minutes | Late-arriving aircraft |
| 19 July 2026 | 2 hours 32 minutes | Late-arriving aircraft |
| 11 December 2025 | 1 hour 48 minutes | Carrier |
| 23 March 2026 | 1 hour 39 minutes | Carrier |
Delay causes
Why DL 915 runs late
Carrier accounts for 57% of the 3,306 delay minutes carriers reported here, and the remaining four split what is left.
- 57%Carrier
- 24%Late-arriving aircraft
- 19%National Airspace System
The largest share of delay minutes, 57%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,887 of the 3,306 delay minutes reported here. The split is drawn from 3,306 delay minutes reported on DL 915.
Cancellations sit at 2.37% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
5.5% 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 about an hour, which a normal layover absorbs.
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 83.6% on time with 2.37% cancelled over 338 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- LAX to JFK, every carrier and departure
- JFK to LAX, the return direction
- Delta Air Lines 934 on the same route86.7%
- Delta Air Lines 960 on the same route83.1%
- American Airlines 118 on the same route83.6%
- American Airlines 307 on the same route74.6%
- Delta Air Lines 958 on the same route82.4%
- American Airlines 274 on the same route57.9%
- Los Angeles International (LAX) delay statistics
- John F. Kennedy International (JFK) 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
- Worst months to fly in the US, ranked by the data
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 ; recomputed monthly. How this data is collected.