Flight number record

DL 1351

Delta Air Lines · Atlanta to Pittsburgh

Route: ATL → PIT
Departs: 22:40
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1351, check with Delta Air Lines.

DL 1351 lands a B, 3 points 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 364 flights, with a median arrival 4 minutes early.

On time

80.6%

Arrivals under 15 minutes late, of 356 completed flights

Avg delay

66 min

Across delayed arrivals only, not all flights

Cancelled

1.92%

National rate is 1.81%

1 hour+ late

6.7%

National rate is 8.1%

These figures cover 364 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 1351 flies

DL 1351 flies ATL to PIT without a single fixed slot. Its most common scheduled departure was 22:40, used on 47 of 364 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 22:4047 flights12.9%

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 22:40 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 1351 runs 10 points better at 80.6%. 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 1351 next to ATL to PIT

Every carrier on ATL to PIT combined arrived on time 84.5% of the time across 2,777 flights, so DL 1351 is 4 points behind it. Delta flew 2,475 flights on the same city pair under all its flight numbers, including this one, and those ran 84.9% on time. Across its whole network Delta Air Lines managed 81.6%, close to this flight's figure.

DL 1351 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1351thin sample	364	80.6%	66 min	1.92%	B
All Delta Air Lines on ATL–PIT	2,475	84.9%	55 min	2.22%	B
All carriers on ATL–PIT	2,777	84.5%	55 min	2.02%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1351 quarter by quarter

Quarter by quarter DL 1351 held fairly steady: 82.0% in Jul–Sep 2025, 75.6% in Oct–Dec 2025, 82.8% in Jan–Mar 2026 and 82.2% in Apr–Jun 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202591 flights82.0%
Oct–Dec 202592 flights75.6%
Jan–Mar 202690 flights82.8%
Apr–Jun 202691 flights82.2%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1351 did best on Saturday at 92.2% on time and worst on Thursday at 72.0%. Each day rests on about 52 flights, so a gap of 20 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1351 runs late

One category carries most of the weight here. Carrier accounts for 47% of the 4,553 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
47%
Late-arriving aircraft
33%
National Airspace System
17%
Extreme weather
3%

The largest share of delay minutes, 47%, 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 2,151 of the 4,553 delay minutes reported here. The split is drawn from 4,553 delay minutes reported on DL 1351.

Cancellations sit at 1.92% against a national 1.81%, which is ordinary. Diversions add another 0.27%.

Connections and routes

What a delay on this flight costs

6.7% 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 526 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 364 flights under DL 1351 in the data flew ATL to PIT. 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. 364 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 1351

For a booking, read DL 1351 as 80.6% on time with 1.92% cancelled over 364 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