Flight number record

DL 2490

Delta Air Lines · Atlanta to Oklahoma City

Route: ATL → OKC
Departs: 09:05
Flights: 353
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 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 12 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 50 minutes. That rests on 353 flights, with a median arrival 10 minutes early.

Set against the rest of the country, DL 2490's record is 12 points better than the US average of 77.3%. That gap is worth roughly 124 fewer late arrivals for every thousand flights.

On time

89.7%

Arrivals under 15 minutes late, of 339 completed flights

Avg delay

48 min

Across delayed arrivals only, not all flights

Cancelled

3.97%

National rate is 1.89%

1 hour+ late

2.7%

National rate is 8.3%

These figures cover 353 flights between September 2025 and August 2026. The median arrival is 10 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 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 353 flights, with 09:15 (36 flights) next.

Departs 09:0550 flights14.2%
Departs 09:1536 flights10.2%

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 09:05 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 2490 runs 6 points better at 89.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

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Against the route

DL 2490 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 2490 is 8 points ahead of 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%, which this flight beats by 9 points.

DL 2490 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2490thin sample	353	89.7%	48 min	3.97%	A−
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 2490 quarter by quarter

DL 2490 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Oct–Dec 2025 at 82.2%, a swing of 18 points on roughly 71 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 flights100.0%
Oct–Dec 202592 flights82.2%
Jan–Mar 202690 flights86.0%
Apr–Jun 202687 flights94.0%
Jul–Sep 202654 flights95.9%

Scale runs 75% to 100%.

By weekday, DL 2490 did best on Wednesday at 98.0% on time and worst on Monday at 80.4%. Each day rests on about 50 flights, so a gap of 18 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late DL 2490 runs when it is late

DL 2490 often beats the schedule: 109 of 339 completed flights, 32%, arrived 15 minutes or more early. The 35 late arrivals split 16 under half an hour, 10 between 30 and 60 minutes, and 9 an hour or more.

15+ min early109 flights32.2%
Within 15 min195 flights57.5%
15–29 min late16 flights4.7%
30–59 min late10 flights2.9%
1–2 hours late6 flights1.8%
2+ hours late3 flights0.9%

Scale runs 0% to 100%.

Share of 339 completed flights by arrival against schedule.

13 of 44 late departures made up the time and arrived on time, 30% of them. Only 4 left on time and still arrived late.

The worst days

Worst days for DL 2490

The latest arrival of the period was on 27 January 2026, 2 hours 34 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across January, April, October and November, with no single month standing out.

The latest arrivals of DL 2490 in the period
Date	Arrived late by	Largest filed cause
27 January 2026	2 hours 34 minutes	Carrier
10 January 2026	2 hours 33 minutes	Extreme weather
28 April 2026	2 hours 2 minutes	National Airspace System
27 October 2025	1 hour 38 minutes	Late-arriving aircraft
8 November 2025	1 hour 26 minutes	Late-arriving aircraft

Delay causes

Why DL 2490 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 1,681 reported delay minutes.

Carrier
41%
Late-arriving aircraft
34%
National Airspace System
17%
Extreme weather
9%

The largest share of delay minutes, 41%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 685 of the 1,681 delay minutes reported here. The split is drawn from 1,681 delay minutes reported on DL 2490.

Cancellations run at 3.97%, against 1.89% nationally. That is about one flight in 25 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 2.7% 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.

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.

DL 2490 is not only a ATL to OKC flight. It also flew OKC to ATL (350 flights, 89.8% 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. 353 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 2490
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
OKC to ATLthin sample	350	89.8%	72 min	4.00%	A−

What to do with this

Booking DL 2490

For a booking, the cancellation rate is the figure to plan around on DL 2490: 3.97% of its 353 scheduled flights did not operate. A late arrival costs roughly 50 minutes, but a cancellation costs the day, so leave a later option open.

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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures