Flight number record
DL 1589
Delta Air Lines · Atlanta to Miami
- Route
- ATL → MIA
- Departs
- 22:57
- Flights
- 255
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1589, check with Delta Air Lines.
DL 1589 sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 255 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.3%, so DL 1589 runs 7 points behind the country as a whole. Across a thousand flights that is about 74 extra late arrivals.
Key figures
On time
69.9%
Arrivals under 15 minutes late, of 246 completed flights
Avg delay
58 min
Across delayed arrivals only, not all flights
Cancelled
3.53%
National rate is 1.89%
1 hour+ late
8.9%
National rate is 8.3%
These figures cover 255 flights between September 2025 and August 2026. Beyond the headline rate, 8.9% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 1589 flies
DL 1589 flies ATL to MIA without a single fixed slot. Its most common scheduled departure was 22:57, used on 38 of 255 flights, with 22:56 (36 flights) and 22:49 (30 flights) next.
- Departs 22:5738 flights14.9%
- Departs 22:5636 flights14.1%
- Departs 22:4930 flights11.8%
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 22:57 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 1589 runs level with that at 69.9%. 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 1589 next to ATL to MIA
Every carrier on ATL to MIA combined arrived on time 71.2% of the time across 6,280 flights, so DL 1589 is about level with it. Delta flew 3,321 flights on the same city pair under all its flight numbers, including this one, and those ran 71.4% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1589thin sample | 255 | 69.9% | 58 min | 3.53% | C− |
| All Delta Air Lines on ATL–MIA | 3,321 | 71.4% | 56 min | 1.81% | C |
| All carriers on ATL–MIA | 6,280 | 71.2% | 73 min | 1.61% | C |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1589 quarter by quarter
Quarter by quarter DL 1589 held fairly steady: 73.6% in Jan–Mar 2026, 74.2% in Apr–Jun 2026 and 65.5% in Jul–Sep 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Oct–Dec 202512 flights—
- Jan–Mar 202690 flights73.6%
- Apr–Jun 202691 flights74.2%
- Jul–Sep 202662 flights65.5%
Scale runs 55% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, DL 1589 did best on Tuesday at 77.1% on time and worst on Friday at 63.6%. Each day rests on about 36 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1589 runs when it is late
The 74 late arrivals split 23 under half an hour, 29 between 30 and 60 minutes, and 22 an hour or more.
- 15+ min early48 flights19.5%
- Within 15 min124 flights50.4%
- 15–29 min late23 flights9.3%
- 30–59 min late29 flights11.8%
- 1–2 hours late17 flights6.9%
- 2+ hours late5 flights2.0%
Scale runs 0% to 100%.
Share of 246 completed flights by arrival against schedule.
10 of 71 late departures made up the time and arrived on time, 14% of them. In the other direction, 13 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 MIA.
The worst days
Worst days for DL 1589
The latest arrival of the period was on 22 April 2026, 9 hours 16 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 |
|---|---|---|
| 22 April 2026 | 9 hours 16 minutes | Carrier |
| 16 March 2026 | 3 hours 38 minutes | Carrier |
| 28 April 2026 | 2 hours 33 minutes | Late-arriving aircraft |
| 15 March 2026 | 2 hours 9 minutes | Carrier |
| 2 August 2026 | 2 hours 1 minute | National Airspace System |
Delay causes
Why DL 1589 runs late
Carrier accounts for 57% of the 4,325 delay minutes carriers reported here, and the remaining four split what is left.
- 57%Carrier
- 25%Late-arriving aircraft
- 16%National Airspace System
- 1%Extreme weather
The largest share of delay minutes, 57%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,475 of the 4,325 delay minutes reported here. The split is drawn from 4,325 delay minutes reported on DL 1589.
Cancellations run at 3.53%, against 1.89% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
8.9% 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.
The 594 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on three other city pairs in the data, including ATL to SGF (58), PHX to SLC (35) and LGA to CHS (1), but none flew often enough under DL 1589 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ATL to MIA only.
One caution: this is a thin sample. 255 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 1589
For a booking, the cancellation rate is the figure to plan around on DL 1589: 3.53% of its 255 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- ATL to MIA, every carrier and departure
- MIA to ATL, the return direction
- Delta Air Lines 1510 on the same route83.7%
- Delta Air Lines 1332 on the same route82.2%
- Delta Air Lines 1588 on the same route64.2%
- Delta Air Lines 1323 on the same route62.4%
- Delta Air Lines 1579 on the same route75.3%
- Frontier Airlines 4406 on the same route72.5%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Miami International (MIA) 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
- What a cancellation rate actually tells you (and what it hides)
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.