Flight number record

DL 2923

Delta Air Lines · Atlanta to Jacksonville

Route: ATL → JAX
Departs: 11:00
Flights: 362
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 9 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 362 flights, with a median arrival 5 minutes early.

Set against the rest of the country, DL 2923's record is 9 points better than the US average of 77.6%. That gap is worth roughly 85 fewer late arrivals for every thousand flights.

On time

86.1%

Arrivals under 15 minutes late, of 353 completed flights

Avg delay

64 min

Across delayed arrivals only, not all flights

Cancelled

2.49%

National rate is 1.81%

1 hour+ late

4.2%

National rate is 8.1%

These figures cover 362 flights between July 2025 and June 2026. The median arrival is 5 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.

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 10:34 (56 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:0081 flights22.4%
Departs 10:3456 flights15.5%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 78.8%, and DL 2923 runs 7 points better at 86.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 2923 next to ATL to JAX

Every carrier on ATL to JAX combined arrived on time 75.5% of the time across 4,017 flights, so DL 2923 is 11 points ahead of it. Delta flew 3,829 flights on the same city pair under all its flight numbers, including this one, and those ran 76.3% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 5 points.

DL 2923 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2923thin sample	362	86.1%	64 min	2.49%	A
All Delta Air Lines on ATL–JAX	3,829	76.3%	57 min	1.44%	B
All carriers on ATL–JAX	4,017	75.5%	57 min	1.42%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2923 quarter by quarter

Quarter by quarter DL 2923 held fairly steady: 87.9% in Jul–Sep 2025, 88.8% in Oct–Dec 2025, 79.8% in Jan–Mar 2026 and 87.6% in Apr–Jun 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.

Jul–Sep 202592 flights87.9%
Oct–Dec 202589 flights88.8%
Jan–Mar 202690 flights79.8%
Apr–Jun 202691 flights87.6%

Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2923 did best on Wednesday at 98.1% on time and worst on Monday at 70.6%. Each day rests on about 52 flights, so a gap of 28 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2923 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 47% of the 3,143 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
47%
Carrier
38%
National Airspace System
14%
Extreme weather
1%

47% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 3,143 reported delay minutes here, that single category outweighs weather by 47 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 3,143 delay minutes reported on DL 2923.

Cancellations sit at 2.49% against a national 1.81%, 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 4.2% land an hour or more behind schedule, against 8.1% 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, 84.4% 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.

Other routes flown as DL 2923
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
JAX to ATLthin sample	360	84.4%	116 min	1.67%	B

What to do with this

Booking DL 2923

For a booking, read DL 2923 as 86.1% on time with 2.49% cancelled over 362 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures