Flight number record

DL 2423

Delta Air Lines · Atlanta to Oklahoma City

Route: ATL → OKC
Departs: 22:44
Flights: 361
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2423, check with Delta Air Lines.

DL 2423 lands a B, 3 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 361 flights, with a median arrival 7 minutes early.

On time

80.1%

Arrivals under 15 minutes late, of 352 completed flights

Avg delay

70 min

Across delayed arrivals only, not all flights

Cancelled

2.22%

National rate is 1.81%

1 hour+ late

8.5%

National rate is 8.1%

These figures cover 361 flights between July 2025 and June 2026. Beyond the headline rate, 8.5% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When DL 2423 flies

DL 2423 flies ATL to OKC without a single fixed slot. Its most common scheduled departure was 22:44, used on 58 of 361 flights, with 22:50 (55 flights) and 22:43 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 22:4458 flights16.1%
Departs 22:5055 flights15.2%
Departs 22:4349 flights13.6%

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 22:44 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 2423 runs 10 points better at 80.1%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

DL 2423 next to ATL to OKC

Every carrier on ATL to OKC combined arrived on time 81.4% of the time across 1,829 flights, so DL 2423 is about level with it. Delta flew 1,725 flights on the same city pair under all its flight numbers, including this one, and those ran 82.5% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 2 points.

DL 2423 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2423thin sample	361	80.1%	70 min	2.22%	B
All Delta Air Lines on ATL–OKC	1,725	82.5%	58 min	2.14%	B
All carriers on ATL–OKC	1,829	81.4%	61 min	2.19%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2423 quarter by quarter

DL 2423 did not run the same all year. Its best quarter was Jan–Mar 2026 at 84.5% on time and its weakest Jul–Sep 2025 at 71.4%, a swing of 13 points on roughly 90 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 202592 flights71.4%
Oct–Dec 202589 flights81.6%
Jan–Mar 202689 flights84.5%
Apr–Jun 202691 flights83.3%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2423 did best on Saturday at 89.8% on time and worst on Sunday at 70.6%. Each day rests on about 52 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2423 runs late

One category carries most of the weight here. Carrier accounts for 48% of the 4,930 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.

Carrier
48%
Late-arriving aircraft
43%
National Airspace System
7%
Extreme weather
3%

43% 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 4,930 reported delay minutes here, that single category outweighs weather by 16 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 4,930 delay minutes reported on DL 2423.

Cancellations sit at 2.22% against a national 1.81%, which is ordinary. Diversions add another 0.28%.

Connections and routes

What a delay on this flight costs

8.5% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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 761 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

Every one of the 361 flights under DL 2423 in the data flew ATL to OKC. 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. 361 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 2423

For a booking, read DL 2423 as 80.1% on time with 2.22% cancelled over 361 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