Flight number record
DL 1320
Delta Air Lines · Atlanta to Cleveland
- Route
- ATL → CLE
- Departs
- 22:50
- Flights
- 363
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1320, check with Delta Air Lines.
DL 1320 lands a B, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That rests on 363 flights, with a median arrival 4 minutes early.
Key figures
On time
77.7%
Arrivals under 15 minutes late, of 354 completed flights
Avg delay
51 min
Across delayed arrivals only, not all flights
Cancelled
2.20%
National rate is 1.89%
1 hour+ late
7.1%
National rate is 8.3%
These figures cover 363 flights between September 2025 and August 2026. The median arrival is 4 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 1320 flies
DL 1320 flies ATL to CLE without a single fixed slot. Its most common scheduled departure was 22:50, used on 95 of 363 flights, with 22:55 (43 flights) next.
- Departs 22:5095 flights26.2%
- Departs 22:5543 flights11.8%
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 22:50 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 1320 runs 8 points better at 77.7%. 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 1320 next to ATL to CLE
Every carrier on ATL to CLE combined arrived on time 79.0% of the time across 3,398 flights, so DL 1320 is about level with it. Delta flew 2,680 flights on the same city pair under all its flight numbers, including this one, and those ran 81.8% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1320thin sample | 363 | 77.7% | 51 min | 2.20% | B |
| All Delta Air Lines on ATL–CLE | 2,680 | 81.8% | 53 min | 1.87% | B |
| All carriers on ATL–CLE | 3,398 | 79.0% | 58 min | 2.00% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1320 quarter by quarter
DL 1320 did not run the same all year. Its best quarter was Jul–Sep 2025 at 86.7% on time and its weakest Oct–Dec 2025 at 70.8%, a swing of 16 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 202530 flights86.7%
- Oct–Dec 202590 flights70.8%
- Jan–Mar 202690 flights80.0%
- Apr–Jun 202691 flights82.4%
- Jul–Sep 202662 flights72.9%
Scale runs 60% to 90%.
By weekday, DL 1320 ranged from 72.5% on Sunday to 82.7% on Wednesday. With about 52 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 1320 runs when it is late
The 79 late arrivals split 30 under half an hour, 24 between 30 and 60 minutes, and 25 an hour or more.
- 15+ min early54 flights15.3%
- Within 15 min221 flights62.4%
- 15–29 min late30 flights8.5%
- 30–59 min late24 flights6.8%
- 1–2 hours late22 flights6.2%
- 2+ hours late3 flights0.8%
Scale runs 0% to 100%.
Share of 354 completed flights by arrival against schedule.
12 of 73 late departures made up the time and arrived on time, 16% of them. In the other direction, 18 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at CLE.
The worst days
Worst days for DL 1320
The latest arrival of the period was on 7 December 2025, 4 hours 32 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 December 2025 | 4 hours 32 minutes | Extreme weather |
| 9 July 2026 | 2 hours 20 minutes | Carrier |
| 11 July 2026 | 2 hours 9 minutes | Late-arriving aircraft |
| 28 April 2026 | 1 hour 57 minutes | Carrier |
| 26 January 2026 | 1 hour 55 minutes | Carrier |
Delay causes
Why DL 1320 runs late
Carrier accounts for 51% of the 4,042 delay minutes carriers reported here, and the remaining four split what is left.
- 51%Carrier
- 29%Late-arriving aircraft
- 15%National Airspace System
- 4%Extreme weather
The largest share of delay minutes, 51%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,073 of the 4,042 delay minutes reported here. The split is drawn from 4,042 delay minutes reported on DL 1320.
Cancellations sit at 2.20% against a national 1.89%, which is ordinary. Diversions add another 0.28%.
Connections and routes
What a delay on this flight costs
7.1% 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 roughly 50 minutes, which a normal layover absorbs.
The 554 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 363 flights under DL 1320 in the data flew ATL to CLE. 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. 363 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 1320
For a booking, read DL 1320 as 77.7% on time with 2.20% cancelled over 363 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ATL to CLE, every carrier and departure
- CLE to ATL, the return direction
- Delta Air Lines 775 on the same route85.7%
- Delta Air Lines 2545 on the same route86.2%
- Frontier Airlines 2410 on the same route73.5%
- Frontier Airlines 4036 on the same route60.0%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Cleveland Hopkins International (CLE) 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
- Worst months to fly in the US, ranked by the data
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.