Flight number record
DL 2423
Delta Air Lines · Atlanta to Oklahoma City
- Route
- ATL → OKC
- Departs
- 22:44
- Flights
- 361
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2423, check with Delta Air Lines.
DL 2423 lands a B−, 5 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 361 flights, with a median arrival 8 minutes early.
Set against the rest of the country, DL 2423's record is 5 points better than the US average of 77.3%. That gap is worth roughly 46 fewer late arrivals for every thousand flights.
Key figures
On time
81.9%
Arrivals under 15 minutes late, of 348 completed flights
Avg delay
56 min
Across delayed arrivals only, not all flights
Cancelled
3.32%
National rate is 1.89%
1 hour+ late
5.7%
National rate is 8.3%
These figures cover 361 flights between September 2025 and August 2026. The median arrival is 8 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 2423 flies
DL 2423 flies ATL to OKC without a single fixed slot. Its most common scheduled departure was 22:44, used on 84 of 361 flights, with 22:43 (56 flights) next.
- Departs 22:4484 flights23.3%
- Departs 22:4356 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 22:44 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 2423 runs 12 points better at 81.9%. 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 2423 next to ATL to OKC
Every carrier on ATL to OKC combined arrived on time 82.1% of the time across 1,813 flights, so DL 2423 is about level with it. Delta flew 1,723 flights on the same city pair under all its flight numbers, including this one, and those ran 83.0% on time. Across its whole network Delta Air Lines managed 81.1%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2423thin sample | 361 | 81.9% | 56 min | 3.32% | B− |
| All Delta Air Lines on ATL–OKC | 1,723 | 83.0% | 58 min | 2.61% | B |
| All carriers on ATL–OKC | 1,813 | 82.1% | 60 min | 2.65% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2423 quarter by quarter
Quarter by quarter DL 2423 held fairly steady: 80.0% in Jul–Sep 2025, 81.6% in Oct–Dec 2025, 84.5% in Jan–Mar 2026, 83.3% in Apr–Jun 2026 and 77.2% in Jul–Sep 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights80.0%
- Oct–Dec 202589 flights81.6%
- Jan–Mar 202689 flights84.5%
- Apr–Jun 202691 flights83.3%
- Jul–Sep 202662 flights77.2%
Scale runs 70% to 90%.
By weekday, DL 2423 did best on Tuesday at 86.3% on time and worst on Sunday at 72.0%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2423 runs when it is late
DL 2423 often beats the schedule: 107 of 348 completed flights, 31%, arrived 15 minutes or more early. The 63 late arrivals split 24 under half an hour, 19 between 30 and 60 minutes, and 20 an hour or more.
- 15+ min early107 flights30.7%
- Within 15 min178 flights51.1%
- 15–29 min late24 flights6.9%
- 30–59 min late19 flights5.5%
- 1–2 hours late12 flights3.4%
- 2+ hours late8 flights2.3%
Scale runs 0% to 100%.
Share of 348 completed flights by arrival against schedule.
12 of 66 late departures made up the time and arrived on time, 18% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for DL 2423
The latest arrival of the period was on 7 December 2025, 3 hours 20 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 |
|---|---|---|
| 7 December 2025 | 3 hours 20 minutes | Late-arriving aircraft |
| 18 December 2025 | 2 hours 50 minutes | Carrier |
| 7 June 2026 | 2 hours 39 minutes | Late-arriving aircraft |
| 6 August 2026 | 2 hours 30 minutes | Carrier |
| 15 March 2026 | 2 hours 19 minutes | Late-arriving aircraft |
Delay causes
Why DL 2423 runs late
Carrier accounts for 44% of the 3,508 delay minutes carriers reported here, and the remaining four split what is left.
- 44%Carrier
- 41%Late-arriving aircraft
- 12%National Airspace System
- 3%Extreme weather
41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,508 reported delay minutes here, that single category outweighs weather by 13 to one. The split is drawn from 3,508 delay minutes reported on DL 2423.
Cancellations run at 3.32%, against 1.89% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
5.7% 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 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.
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, the cancellation rate is the figure to plan around on DL 2423: 3.32% of its 361 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- ATL to OKC, every carrier and departure
- OKC to ATL, the return direction
- Delta Air Lines 2490 on the same route89.7%
- Delta Air Lines 2784 on the same route81.1%
- Delta Air Lines 2862 on the same route79.3%
- Delta Air Lines 2020 on the same route82.4%
- 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
- 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.