Flight number record

DL 1320

Delta Air Lines · Atlanta to Cleveland

Route: ATL → CLE
Departs: 22:50
Flights: 363
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1320, check with Delta Air Lines.

DL 1320 lands a B, about a point better than the national rate of 77.6%. About one flight in five 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 363 flights, with a median arrival 4 minutes early.

On time

78.4%

Arrivals under 15 minutes late, of 356 completed flights

Avg delay

67 min

Across delayed arrivals only, not all flights

Cancelled

1.93%

National rate is 1.81%

1 hour+ late

7.9%

National rate is 8.1%

These figures cover 363 flights between July 2025 and June 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.

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 22:53 (52 flights) and 22:55 (43 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 22:5095 flights26.2%
Departs 22:5352 flights14.3%
Departs 22:5543 flights11.8%

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 22:50 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 1320 runs 8 points better at 78.4%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

DL 1320 next to ATL to CLE

Every carrier on ATL to CLE combined arrived on time 80.6% of the time across 3,407 flights, so DL 1320 is 2 points behind it. Delta flew 2,693 flights on the same city pair under all its flight numbers, including this one, and those ran 83.5% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 3 points.

DL 1320 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1320thin sample	363	78.4%	67 min	1.93%	B
All Delta Air Lines on ATL–CLE	2,693	83.5%	56 min	1.86%	B
All carriers on ATL–CLE	3,407	80.6%	60 min	2.00%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1320 quarter by quarter

DL 1320 did not run the same all year. Its best quarter was Apr–Jun 2026 at 82.4% on time and its weakest Oct–Dec 2025 at 70.8%, a swing of 12 points on roughly 91 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 flights80.2%
Oct–Dec 202590 flights70.8%
Jan–Mar 202690 flights80.0%
Apr–Jun 202691 flights82.4%

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1320 did best on Saturday at 88.0% on time and worst on Sunday at 68.6%. Each day rests on about 52 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1320 runs late

One category carries most of the weight here. Carrier accounts for 55% of the 5,133 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.

Carrier
55%
Late-arriving aircraft
25%
National Airspace System
12%
Extreme weather
8%

The largest share of delay minutes, 55%, 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 2,822 of the 5,133 delay minutes reported here. The split is drawn from 5,133 delay minutes reported on DL 1320.

Cancellations sit at 1.93% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

7.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, 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. 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.

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 78.4% on time with 1.93% cancelled over 363 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures