Flight number record
DL 2923
Delta Air Lines · Atlanta to Jacksonville
- Route
- ATL → JAX
- Departs
- 11:00
- Flights
- 362
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2923, check with Delta Air Lines.
DL 2923 earns an A. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 362 flights, with a median arrival 4 minutes early.
Set against the rest of the country, DL 2923's record is 8 points better than the US average of 77.3%. That gap is worth roughly 77 fewer late arrivals for every thousand flights.
Key figures
On time
85.0%
Arrivals under 15 minutes late, of 354 completed flights
Avg delay
72 min
Across delayed arrivals only, not all flights
Cancelled
2.21%
National rate is 1.89%
1 hour+ late
4.5%
National rate is 8.3%
These figures cover 362 flights between September 2025 and August 2026. The median arrival is 4 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 2923 flies
DL 2923 flies ATL to JAX without a single fixed slot. Its most common scheduled departure was 11:00, used on 81 of 362 flights, with 10:48 (57 flights) and 10:34 (56 flights) next.
- Departs 11:0081 flights22.4%
- Departs 10:4857 flights15.7%
- Departs 10:3456 flights15.5%
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 11:00 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 2923 runs 7 points better at 85.0%. 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 2923 next to ATL to JAX
Every carrier on ATL to JAX combined arrived on time 75.1% of the time across 4,076 flights, so DL 2923 is 10 points ahead of it. Delta flew 3,845 flights on the same city pair under all its flight numbers, including this one, and those ran 76.4% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2923thin sample | 362 | 85.0% | 72 min | 2.21% | A |
| All Delta Air Lines on ATL–JAX | 3,845 | 76.4% | 56 min | 1.59% | B |
| All carriers on ATL–JAX | 4,076 | 75.1% | 56 min | 1.59% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2923 quarter by quarter
DL 2923 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jul–Sep 2026 at 77.4%, a swing of 19 points on roughly 72 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 flights96.7%
- Oct–Dec 202589 flights88.8%
- Jan–Mar 202690 flights79.8%
- Apr–Jun 202691 flights87.6%
- Jul–Sep 202662 flights77.4%
Scale runs 70% to 100%.
By weekday, DL 2923 did best on Wednesday at 96.2% on time and worst on Monday at 73.1%. Each day rests on about 52 flights, so a gap of 23 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2923 runs when it is late
The 53 late arrivals split 20 under half an hour, 17 between 30 and 60 minutes, and 16 an hour or more.
- 15+ min early17 flights4.8%
- Within 15 min284 flights80.2%
- 15–29 min late20 flights5.6%
- 30–59 min late17 flights4.8%
- 1–2 hours late7 flights2.0%
- 2+ hours late9 flights2.5%
Scale runs 0% to 100%.
Share of 354 completed flights by arrival against schedule.
7 of 51 late departures made up the time and arrived on time, 14% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for DL 2923
The latest arrival of the period was on 14 December 2025, 6 hours 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 |
|---|---|---|
| 14 December 2025 | 6 hours | Late-arriving aircraft |
| 26 August 2026 | 5 hours 21 minutes | Carrier |
| 17 March 2026 | 4 hours 13 minutes | Late-arriving aircraft |
| 15 June 2026 | 4 hours 13 minutes | Late-arriving aircraft |
| 26 January 2026 | 3 hours 56 minutes | Carrier |
Delay causes
Why DL 2923 runs late
Late-arriving aircraft accounts for 43% of the 3,817 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Late-arriving aircraft
- 42%Carrier
- 13%National Airspace System
- 1%Extreme weather
43% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,817 reported delay minutes here, that single category outweighs weather by 43 to one. The split is drawn from 3,817 delay minutes reported on DL 2923.
Cancellations sit at 2.21% against a national 1.89%, 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 4.5% 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.
DL 2923 is not only a ATL to JAX flight. It also flew JAX to ATL (360 flights, 82.4% 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. 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| JAX to ATLthin sample | 360 | 82.4% | 101 min | 1.67% | B |
What to do with this
Booking DL 2923
For a booking, read DL 2923 as 85.0% on time with 2.21% cancelled over 362 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ATL to JAX, every carrier and departure
- JAX to ATL, the return direction
- Delta Air Lines 2720 on the same route78.2%
- Delta Air Lines 2276 on the same route73.6%
- Delta Air Lines 2627 on the same route68.7%
- Delta Air Lines 2326 on the same route89.2%
- Delta Air Lines 3024 on the same route78.2%
- Delta Air Lines 1001 on the same route68.4%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Jacksonville International (JAX) 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
- Why the first flight of the morning is statistically safest
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.