Flight number record
DL 2484
Delta Air Lines · Atlanta to Birmingham
- Route
- ATL → BHM
- Departs
- 16:25
- Flights
- 346
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2484, check with Delta Air Lines.
DL 2484 lands a B, 2 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about 50 minutes on average. That rests on 346 flights, with a median arrival 7 minutes early.
Key figures
On time
79.2%
Arrivals under 15 minutes late, of 341 completed flights
Avg delay
50 min
Across delayed arrivals only, not all flights
Cancelled
1.16%
National rate is 1.89%
1 hour+ late
5.3%
National rate is 8.3%
These figures cover 346 flights between September 2025 and August 2026. The median arrival is 7 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 2484 flies
DL 2484 flies ATL to BHM without a single fixed slot. Its most common scheduled departure was 16:25, used on 88 of 346 flights, with 16:35 (52 flights) and 16:45 (38 flights) next.
- Departs 16:2588 flights25.4%
- Departs 16:3552 flights15.0%
- Departs 16:4538 flights11.0%
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 16:25 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 2484 runs 7 points better at 79.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 2484 next to ATL to BHM
Every carrier on ATL to BHM combined arrived on time 83.1% of the time across 3,371 flights, so DL 2484 is 4 points behind it. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2484thin sample | 346 | 79.2% | 50 min | 1.16% | B |
| All Delta Air Lines on ATL–BHM | 3,371 | 83.1% | 64 min | 1.69% | B |
| All carriers on ATL–BHM | 3,371 | 83.1% | 64 min | 1.69% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2484 quarter by quarter
DL 2484 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Jul–Sep 2026 at 65.4%, a swing of 28 points on roughly 69 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 flights93.3%
- Oct–Dec 202589 flights80.5%
- Jan–Mar 202687 flights82.6%
- Apr–Jun 202688 flights77.9%
- Jul–Sep 202652 flights65.4%
Scale runs 55% to 100%.
By weekday, DL 2484 ranged from 74.5% on Monday to 85.1% on Tuesday. With about 49 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 2484 runs when it is late
The 71 late arrivals split 24 under half an hour, 29 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early53 flights15.5%
- Within 15 min217 flights63.6%
- 15–29 min late24 flights7.0%
- 30–59 min late29 flights8.5%
- 1–2 hours late13 flights3.8%
- 2+ hours late5 flights1.5%
Scale runs 0% to 100%.
Share of 341 completed flights by arrival against schedule.
12 of 66 late departures made up the time and arrived on time, 18% of them. 17 flights left on time and still arrived late.
The worst days
Worst days for DL 2484
The latest arrival of the period was on 19 July 2026, 4 hours 16 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 July 2026 | 4 hours 16 minutes | Late-arriving aircraft |
| 16 March 2026 | 2 hours 30 minutes | Carrier |
| 11 March 2026 | 2 hours 24 minutes | Carrier |
| 14 June 2026 | 2 hours 23 minutes | Late-arriving aircraft |
| 29 November 2025 | 2 hours 9 minutes | Late-arriving aircraft |
Delay causes
Why DL 2484 runs late
Carrier accounts for 44% of the 3,545 delay minutes carriers reported here, and the remaining four split what is left.
- 44%Carrier
- 30%Late-arriving aircraft
- 20%National Airspace System
- 6%Extreme weather
The largest share of delay minutes, 44%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,553 of the 3,545 delay minutes reported here. The split is drawn from 3,545 delay minutes reported on DL 2484.
Cancellations sit at 1.16% against a national 1.89%, which is ordinary. Diversions add another 0.29%.
Connections and routes
What a delay on this flight costs
5.3% 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 50 minutes, which a normal layover absorbs.
DL 2484 is not only a ATL to BHM flight. It also flew BHM to ATL (300 flights, 79.4% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| BHM to ATLthin sample | 300 | 79.4% | 67 min | 0.67% | B+ |
What to do with this
Booking DL 2484
For a booking, read DL 2484 as 79.2% on time with 1.16% cancelled over 346 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ATL to BHM, every carrier and departure
- BHM to ATL, the return direction
- Delta Air Lines 3012 on the same route86.8%
- Delta Air Lines 3100 on the same route92.1%
- Delta Air Lines 2034 on the same route80.1%
- Delta Air Lines 3164 on the same route89.8%
- 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.