Flight number record
DL 2584
Delta Air Lines · Atlanta to Albany
- Route
- ATL → ALB
- Departs
- 21:36
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2584, check with Delta Air Lines.
DL 2584 sits in the middle of the pack with a B. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 365 flights, with a median arrival 2 minutes early.
Key figures
On time
75.3%
Arrivals under 15 minutes late, of 356 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
2.19%
National rate is 1.89%
1 hour+ late
8.4%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. Beyond the headline rate, 8.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 2584 flies
DL 2584 flies ATL to ALB without a single fixed slot. Its most common scheduled departure was 21:36, used on 58 of 365 flights, with 21:46 (56 flights) and 21:45 (37 flights) next.
- Departs 21:3658 flights15.9%
- Departs 21:4656 flights15.3%
- Departs 21:4537 flights10.1%
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 21:36 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 2584 runs 5 points better at 75.3%. 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 2584 next to ATL to ALB
Every carrier on ATL to ALB combined arrived on time 79.1% of the time across 1,042 flights, so DL 2584 is 4 points behind it. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2584 | 365 | 75.3% | 75 min | 2.19% | B |
| All Delta Air Lines on ATL–ALB | 1,042 | 79.1% | 66 min | 2.21% | B |
| All carriers on ATL–ALB | 1,042 | 79.1% | 66 min | 2.21% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2584 quarter by quarter
DL 2584 did not run the same all year. Its best quarter was Jan–Mar 2026 at 84.7% on time and its weakest Jul–Sep 2026 at 58.1%, a swing of 27 points on roughly 73 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 flights76.7%
- Oct–Dec 202592 flights75.6%
- Jan–Mar 202690 flights84.7%
- Apr–Jun 202691 flights77.5%
- Jul–Sep 202662 flights58.1%
Scale runs 50% to 90%.
By weekday, DL 2584 did best on Wednesday at 88.5% on time and worst on Sunday at 62.5%. Each day rests on about 52 flights, so a gap of 26 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2584 runs when it is late
The 88 late arrivals split 30 under half an hour, 28 between 30 and 60 minutes, and 30 an hour or more.
- 15+ min early35 flights9.8%
- Within 15 min233 flights65.4%
- 15–29 min late30 flights8.4%
- 30–59 min late28 flights7.9%
- 1–2 hours late19 flights5.3%
- 2+ hours late11 flights3.1%
Scale runs 0% to 100%.
Share of 356 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 85 departures that left 15 minutes late or more, only 10 made it up before arrival. 13 flights left on time and still arrived late.
The worst days
Worst days for DL 2584
The latest arrival of the period was on 26 December 2025, 13 hours 35 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 |
|---|---|---|
| 26 December 2025 | 13 hours 35 minutes | Carrier |
| 27 February 2026 | 12 hours 53 minutes | Carrier |
| 7 December 2025 | 4 hours 9 minutes | Late-arriving aircraft |
| 11 July 2026 | 3 hours 40 minutes | Carrier |
| 10 May 2026 | 3 hours 28 minutes | National Airspace System |
Delay causes
Why DL 2584 runs late
Carrier accounts for 60% of the 6,631 delay minutes carriers reported here, and the remaining four split what is left.
- 60%Carrier
- 24%Late-arriving aircraft
- 14%National Airspace System
- 2%Extreme weather
The largest share of delay minutes, 60%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,981 of the 6,631 delay minutes reported here. The split is drawn from 6,631 delay minutes reported on DL 2584.
Cancellations sit at 2.19% against a national 1.89%, which is ordinary. Diversions add another 0.27%.
Connections and routes
What a delay on this flight costs
8.4% 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 a little over an hour, which a normal layover absorbs.
The 853 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.
Every one of the 365 flights under DL 2584 in the data flew ATL to ALB. 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. 365 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 2584
For a booking, read DL 2584 as 75.3% on time with 2.19% cancelled over 365 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ATL to ALB, every carrier and departure
- ALB to ATL, the return direction
- Delta Air Lines 1137 on the same route85.9%
- 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
- Connecting flights: how much buffer the data says you need
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.