Flight number record

DL 747

Delta Air Lines · New York to Los Angeles

Route: JFK → LAX
Departs: 13:30
Flights: 346
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 747, check with Delta Air Lines.

DL 747 lands a B, 2 points better than the national rate of 77.6%. 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 is a workable record, not a spotless one. That rests on 346 flights, with a median arrival 10 minutes early.

On time

79.8%

Arrivals under 15 minutes late, of 342 completed flights

Avg delay

75 min

Across delayed arrivals only, not all flights

Cancelled

1.16%

National rate is 1.81%

1 hour+ late

9.1%

National rate is 8.1%

These figures cover 346 flights between July 2025 and June 2026. Beyond the headline rate, 9.1% 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 747 flies

DL 747 flies JFK to LAX without a single fixed slot. Its most common scheduled departure was 13:30, used on 134 of 346 flights, with 13:55 (95 flights) and 13:45 (73 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 13:30134 flights38.7%
Departs 13:5595 flights27.5%
Departs 13:4573 flights21.1%

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 13:30 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and DL 747 runs level with that at 79.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 747 next to JFK to LAX

Every carrier on JFK to LAX combined arrived on time 77.6% of the time across 10,284 flights, so DL 747 is 2 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 77.5% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 2 points.

DL 747 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 747thin sample	346	79.8%	75 min	1.16%	B
All Delta Air Lines on JFK–LAX	3,358	77.5%	71 min	1.79%	B
All carriers on JFK–LAX	10,284	77.6%	77 min	1.94%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 747 quarter by quarter

DL 747 did not run the same all year. Its best quarter was Jan–Mar 2026 at 88.5% on time and its weakest Apr–Jun 2026 at 68.7%, a swing of 20 points on roughly 87 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 202592 flights81.5%
Oct–Dec 202590 flights80.9%
Jan–Mar 202681 flights88.5%
Apr–Jun 202683 flights68.7%

Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 747 did best on Monday at 84.3% on time and worst on Saturday at 67.4%. Each day rests on about 49 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 747 runs late

One category carries most of the weight here. Carrier accounts for 62% of the 5,171 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
62%
National Airspace System
18%
Late-arriving aircraft
15%
Extreme weather
4%
Security
1%

The largest share of delay minutes, 62%, 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 3,182 of the 5,171 delay minutes reported here. The split is drawn from 5,171 delay minutes reported on DL 747.

Cancellations sit at 1.16% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

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. 9.1% 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.

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 BOS to LGA (9), but none flew often enough under DL 747 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to JFK to LAX only.

One caution: this is a thin sample. 346 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 747

For a booking, read DL 747 as 79.8% on time with 1.16% cancelled over 346 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