Flight number record
DL 2490
Delta Air Lines · Atlanta to Oklahoma City
- Route
- ATL → OKC
- Departs
- 09:05
- Flights
- 361
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2490, check with Delta Air Lines.
DL 2490 earns an A−. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 10 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 45 minutes. That rests on 361 flights, with a median arrival 9 minutes early.
Set against the rest of the country, DL 2490's record is 10 points better than the US average of 77.6%. That gap is worth roughly 98 fewer late arrivals for every thousand flights.
Key figures
On time
87.4%
Arrivals under 15 minutes late, of 350 completed flights
Avg delay
44 min
Across delayed arrivals only, not all flights
Cancelled
3.05%
National rate is 1.81%
1 hour+ late
2.9%
National rate is 8.1%
These figures cover 361 flights between July 2025 and June 2026. The median arrival is 9 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 2490 flies
DL 2490 flies ATL to OKC without a single fixed slot. Its most common scheduled departure was 09:05, used on 50 of 361 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 09:0550 flights13.9%
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 09:05 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 2490 runs 3 points better at 87.4%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Against the route
DL 2490 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 2490 is 6 points ahead of 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 beats by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2490thin sample | 361 | 87.4% | 44 min | 3.05% | A− |
| 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 2490 quarter by quarter
DL 2490 did not run the same all year. Its best quarter was Apr–Jun 2026 at 94.0% on time and its weakest Oct–Dec 2025 at 82.2%, a swing of 12 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 flights87.8%
- Oct–Dec 202592 flights82.2%
- Jan–Mar 202690 flights86.0%
- Apr–Jun 202687 flights94.0%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2490 did best on Wednesday at 96.0% on time and worst on Monday at 78.0%. Each day rests on about 52 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Delay causes
Why DL 2490 runs late
One category carries most of the weight here. Carrier accounts for 43% of the 1,953 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.
- 43%Carrier
- 33%Late-arriving aircraft
- 17%National Airspace System
- 8%Extreme weather
The largest share of delay minutes, 43%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 837 of the 1,953 delay minutes reported here. The split is drawn from 1,953 delay minutes reported on DL 2490.
Cancellations run at 3.05%, against 1.81% nationally. That is roughly 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
Badly late arrivals are rare here: only 2.9% 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.
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.
DL 2490 is not only a ATL to OKC flight. It also flew OKC to ATL (358 flights, 89.3% 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. 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OKC to ATLthin sample | 358 | 89.3% | 66 min | 3.07% | A− |
What to do with this
Booking DL 2490
For a booking, the cancellation rate is the figure to plan around on DL 2490: 3.05% of its 361 scheduled flights did not operate. A late arrival costs about 45 minutes, 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 2423 on the same route80.1%
- Delta Air Lines 2784 on the same route82.4%
- Delta Air Lines 2862 on the same route80.1%
- Delta Air Lines 2020 on the same route81.6%
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.