Flight number record
DL 2020
Delta Air Lines · Oklahoma City to Atlanta
- Route
- OKC → ATL
- Departs
- 14:32
- Flights
- 293
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2020, check with Delta Air Lines.
DL 2020 lands a B, 6 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 293 flights, with a median arrival 18 minutes early.
Set against the rest of the country, DL 2020's record is 6 points better than the US average of 77.6%. That gap is worth roughly 57 fewer late arrivals for every thousand flights.
Key figures
On time
83.3%
Arrivals under 15 minutes late, of 288 completed flights
Avg delay
64 min
Across delayed arrivals only, not all flights
Cancelled
1.02%
National rate is 1.81%
1 hour+ late
4.5%
National rate is 8.1%
These figures cover 293 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.
Schedule
When DL 2020 flies
DL 2020 flies OKC to ATL without a single fixed slot. Its most common scheduled departure was 14:32, used on 31 of 293 flights, with 13:55 (30 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 14:3231 flights10.6%
- Departs 13:5530 flights10.2%
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 14:32 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 2020 runs 11 points better at 83.3%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
DL 2020 next to OKC to ATL
Every carrier on OKC to ATL combined arrived on time 86.6% of the time across 1,828 flights, so DL 2020 is 3 points behind it. Delta flew 1,724 flights on the same city pair under all its flight numbers, including this one, and those ran 88.6% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2020thin sample | 293 | 83.3% | 64 min | 1.02% | B |
| All Delta Air Lines on OKC–ATL | 1,724 | 88.6% | 94 min | 2.15% | A |
| All carriers on OKC–ATL | 1,828 | 86.6% | 95 min | 2.19% | A |
| Delta Air Lines, whole network | 1,038,570 | 81.6% | 71 min | 1.62% | B |
Across the year
DL 2020 quarter by quarter
DL 2020 did not run the same all year. Its best quarter was Jan–Mar 2026 at 90.0% on time and its weakest Jul–Sep 2025 at 75.4%, a swing of 15 points on roughly 73 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 202562 flights75.4%
- Oct–Dec 202572 flights79.2%
- Jan–Mar 202683 flights90.0%
- Apr–Jun 202676 flights86.7%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2020 did best on Thursday at 90.9% on time and worst on Friday at 72.7%. Each day rests on about 42 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Delay causes
Why DL 2020 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 59% of the 3,067 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.
- 59%Late-arriving aircraft
- 24%Carrier
- 16%National Airspace System
- 1%Extreme weather
59% 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 3,067 reported delay minutes here, that single category outweighs weather by 55 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 3,067 delay minutes reported on DL 2020.
Cancellations sit at 1.02% against a national 1.81%, which is ordinary. Diversions add another 0.68%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.5% 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 2020 is not only a OKC to ATL flight. It also flew ATL to OKC (284 flights, 81.6% 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. 293 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 |
|---|---|---|---|---|---|
| ATL to OKCthin sample | 284 | 81.6% | 54 min | 0.70% | B+ |
What to do with this
Booking DL 2020
For a booking, read DL 2020 as 83.3% on time with 1.02% cancelled over 293 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- OKC to ATL, every carrier and departure
- ATL to OKC, the return direction
- Delta Air Lines 1158 on the same route92.4%
- Delta Air Lines 1184 on the same route92.4%
- Delta Air Lines 2490 on the same route89.3%
- Delta Air Lines 2862 on the same route83.2%
- 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.