Carrier route record
DLOKC→ATL
Delta Air Lines · Oklahoma City to Atlanta
- Flights
- 1,724
- Period
- July 2025 to June 2026
- Share of route
- 94%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Delta Air Lines.
Delta on OKC to ATL 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 11 points better than the national rate of 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 1,724 flights, with a median arrival 18 minutes early.
Set against the rest of the country, Delta's OKC to ATL record is 11 points better than the US average of 77.6%. That gap is worth roughly 110 fewer late arrivals for every thousand flights.
Key figures
On time
88.6%
Arrivals under 15 minutes late, of 1,680 completed flights
Avg delay
94 min
Across delayed arrivals only, not all flights
Cancelled
2.15%
National rate is 1.81%
Whole route
86.6%
Every carrier on OKC to ATL, 1,828 flights
These figures cover 1,724 flights between July 2025 and June 2026. The median arrival is 18 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.
Carrier by carrier
Delta against every carrier on OKC to ATL
Delta flew 1,724 of the 1,828 flights on OKC to ATL, most of the route. Its 88.6% on time is 2 points better than the route as a whole, which runs 86.6%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Southwest at 100.0% to Frontier at 52.0%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Southwest Airlinesthin sample | 1 | 100.0% | — | 0.00% | A+ |
| Delta Air Lines (this page) | 1,724 | 88.6% | 94 min | 2.15% | A |
| Frontier Airlinesthin sample | 103 | 52.0% | 99 min | 2.91% | F |
Flight by flight
Delta flight numbers on OKC to ATL
Departure window
When Delta runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 10 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am622 flights92.8%
- 8am–11am108 flights90.4%
- 11am–2pm454 flights88.9%
- 2pm–5pm253 flights82.7%
- 5pm–8pm287 flights83.8%
- 8pm–5am—
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 92.8% of the time, against 82.7% for the afternoon window. That is 10 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 622 flights scheduled in it.
Across the year
Delta on OKC to ATL through the year
July is the worst month at 80.1% on time, 16 points below September, the best at 96.4%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. March was the busiest month here, with 151 flights.
Across the week, Wednesday is the strongest day at 93.5% on time and Monday the weakest at 85.3%. 8 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Delta runs late on this route
One category carries most of the weight here. Carrier accounts for 57% of the 18,000 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.
- 57%Carrier
- 30%Late-arriving aircraft
- 11%National Airspace System
- 2%Extreme weather
The largest share of delay minutes, 57%, 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 10,000 of the 18,000 delay minutes reported here. The split is drawn from 18,012 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 92.8% on time here.
Cancellations sit at 2.15% against a national 1.81%, which is ordinary. Diversions add another 0.41%.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 4.1% 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.
The return leg is a different operation and performs like one: it runs 82.5% on time across 1,725 flights, 6 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 6 points of difference.
The sample behind these figures is 1,724 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking Delta on OKC to ATL
Put together: the calendar is the biggest lever here, not the carrier or the hour. September runs 96.4% on time and July 80.1%, a swing of 16 points. If the dates move at all, move them out of July before you think about anything else. 1,680 completed flights over 12 months sit behind that.
Related
Where to go next
- OKC to ATL, every carrier
- Delta on ATL to OKC, the return leg
- Frontier Airlines on OKC to ATL52.0%
- Delta Air Lines network-wide record
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- The best time of day to fly, according to 7.04 million flight records
- Worst months to fly in the US, ranked by the data
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.