Flight number record

DL 1534

Delta Air Lines · New Orleans to Atlanta

Route: MSY → ATL
Departs: 06:25
Flights: 362
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1534, check with Delta Air Lines.

DL 1534 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 14 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 362 flights, with a median arrival 8 minutes early.

Set against the rest of the country, DL 1534's record is 14 points better than the US average of 77.6%. That gap is worth roughly 139 fewer late arrivals for every thousand flights.

On time

91.5%

Arrivals under 15 minutes late, of 354 completed flights

Avg delay

61 min

Across delayed arrivals only, not all flights

Cancelled

2.21%

National rate is 1.81%

1 hour+ late

2.8%

National rate is 8.1%

These figures cover 362 flights between July 2025 and June 2026. The median arrival is 8 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 1534 flies

DL 1534 flies MSY to ATL without a single fixed slot. Its most common scheduled departure was 06:25, used on 88 of 362 flights, with 06:20 (76 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:2588 flights24.3%
Departs 06:2076 flights21.0%

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 06:25 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 1534 runs 2 points better at 91.5%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

DL 1534 next to MSY to ATL

Every carrier on MSY to ATL combined arrived on time 83.3% of the time across 4,056 flights, so DL 1534 is 8 points ahead of it. Delta flew 3,278 flights on the same city pair under all its flight numbers, including this one, and those ran 87.3% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 10 points.

DL 1534 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1534thin sample	362	91.5%	61 min	2.21%	A
All Delta Air Lines on MSY–ATL	3,278	87.3%	65 min	1.59%	A
All carriers on MSY–ATL	4,056	83.3%	65 min	1.50%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1534 quarter by quarter

Quarter by quarter DL 1534 held fairly steady: 94.6% in Jul–Sep 2025, 88.6% in Oct–Dec 2025, 94.0% in Jan–Mar 2026 and 88.9% in Apr–Jun 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights94.6%
Oct–Dec 202590 flights88.6%
Jan–Mar 202689 flights94.0%
Apr–Jun 202691 flights88.9%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1534 did best on Wednesday at 98.1% on time and worst on Monday at 84.0%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1534 runs late

One category carries most of the weight here. Carrier accounts for 56% of the 1,828 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
56%
National Airspace System
39%
Extreme weather
5%

The largest share of delay minutes, 56%, 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 1,026 of the 1,828 delay minutes reported here. The split is drawn from 1,828 delay minutes reported on DL 1534.

Cancellations sit at 2.21% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 2.8% 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.

Every one of the 362 flights under DL 1534 in the data flew MSY to ATL. 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 1534

For a booking, read DL 1534 as 91.5% on time with 2.21% cancelled over 362 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