Flight number record
DL 1547
Delta Air Lines · New Orleans to Atlanta
- Route
- MSY → ATL
- Departs
- 05:20
- Flights
- 290
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1547, check with Delta Air Lines.
DL 1547 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 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 290 flights, with a median arrival 12 minutes early.
Set against the rest of the country, DL 1547's record is 13 points better than the US average of 77.3%. That gap is worth roughly 133 fewer late arrivals for every thousand flights.
Key figures
On time
90.6%
Arrivals under 15 minutes late, of 288 completed flights
Avg delay
58 min
Across delayed arrivals only, not all flights
Cancelled
0.69%
National rate is 1.89%
1 hour+ late
2.8%
National rate is 8.3%
These figures cover 290 flights between September 2025 and August 2026. The median arrival is 12 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 1547 flies
DL 1547 flies MSY to ATL without a single fixed slot. Its most common scheduled departure was 05:20, used on 89 of 290 flights, with 05:35 (36 flights) and 05:25 (35 flights) next.
- Departs 05:2089 flights30.7%
- Departs 05:3536 flights12.4%
- Departs 05:2535 flights12.1%
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 05:20 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 1547 runs level with that at 90.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
DL 1547 next to MSY to ATL
Every carrier on MSY to ATL combined arrived on time 82.2% of the time across 4,004 flights, so DL 1547 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 86.7% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1547thin sample | 290 | 90.6% | 58 min | 0.69% | A+ |
| All Delta Air Lines on MSY–ATL | 3,278 | 86.7% | 71 min | 1.49% | A |
| All carriers on MSY–ATL | 4,004 | 82.2% | 68 min | 1.47% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1547 quarter by quarter
DL 1547 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Jul–Sep 2026 at 81.1%, a swing of 19 points on roughly 58 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 flights100.0%
- Oct–Dec 202589 flights92.1%
- Jan–Mar 202647 flights86.7%
- Apr–Jun 202671 flights94.4%
- Jul–Sep 202653 flights81.1%
Scale runs 75% to 100%.
By weekday, DL 1547 did best on Saturday at 100.0% on time and worst on Monday at 78.3%. Each day rests on about 41 flights, so a gap of 22 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1547 runs when it is late
DL 1547 often beats the schedule: 103 of 288 completed flights, 36%, arrived 15 minutes or more early. The 27 late arrivals split 12 under half an hour, 7 between 30 and 60 minutes, and 8 an hour or more.
- 15+ min early103 flights35.8%
- Within 15 min158 flights54.9%
- 15–29 min late12 flights4.2%
- 30–59 min late7 flights2.4%
- 1–2 hours late6 flights2.1%
- 2+ hours late2 flights0.7%
Scale runs 0% to 100%.
Share of 288 completed flights by arrival against schedule.
4 of 21 late departures made up the time and arrived on time, 19% of them. 10 flights left on time and still arrived late.
The worst days
Worst days for DL 1547
The latest arrival of the period was on 20 July 2026, 3 hours 52 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in July 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 20 July 2026 | 3 hours 52 minutes | Carrier |
| 3 July 2026 | 3 hours 33 minutes | Late-arriving aircraft |
| 23 April 2026 | 1 hour 52 minutes | Carrier |
| 8 December 2025 | 1 hour 42 minutes | Carrier |
| 2 July 2026 | 1 hour 35 minutes | Carrier |
Delay causes
Why DL 1547 runs late
Carrier accounts for 59% of the 1,557 delay minutes carriers reported here, and the remaining four split what is left.
- 59%Carrier
- 22%National Airspace System
- 13%Late-arriving aircraft
- 5%Extreme weather
The largest share of delay minutes, 59%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 925 of the 1,557 delay minutes reported here. The split is drawn from 1,557 delay minutes reported on DL 1547.
Cancellations are rare at 0.69%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
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 8.3% 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.
The same number turns up on four other city pairs in the data, including PDX to SLC (4), ATL to MSY (4) and TLH to ATL (3), but none flew often enough under DL 1547 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to MSY to ATL only.
One caution: this is a thin sample. 290 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 1547
For a booking, DL 1547 has one of the better records a US domestic flight can show: 90.6% on time and 0.69% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- MSY to ATL, every carrier and departure
- ATL to MSY, the return direction
- Delta Air Lines 2522 on the same route89.5%
- Delta Air Lines 1534 on the same route91.5%
- Delta Air Lines 2542 on the same route85.7%
- Delta Air Lines 3128 on the same route92.8%
- Delta Air Lines 3157 on the same route76.2%
- Louis Armstrong New Orleans International (MSY) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) 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.