Flight number record

DL 371

Delta Air Lines · Atlanta to New York

Route: ATL → LGA
Departs: 10:30
Flights: 346
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 371, check with Delta Air Lines.

DL 371 earns an A. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 45 minutes. That rests on 346 flights, with a median arrival 7 minutes early.

Set against the rest of the country, DL 371's record is 8 points better than the US average of 77.6%. That gap is worth roughly 79 fewer late arrivals for every thousand flights.

On time

85.5%

Arrivals under 15 minutes late, of 338 completed flights

Avg delay

43 min

Across delayed arrivals only, not all flights

Cancelled

2.31%

National rate is 1.81%

1 hour+ late

3.0%

National rate is 8.1%

These figures cover 346 flights between July 2025 and June 2026. The median arrival is 7 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 371 flies

DL 371 is scheduled to leave Atlanta (ATL) at 10:30 local time and reach New York (LGA) at 12:44. That slot held for 331 of the 346 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.

Departs 10:30331 flights95.7%

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 10:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 371 runs level with that at 85.5%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

DL 371 next to ATL to LGA

Every carrier on ATL to LGA combined arrived on time 73.4% of the time across 8,344 flights, so DL 371 is 12 points ahead of it. Delta flew 4,936 flights on the same city pair under all its flight numbers, including this one, and those ran 76.7% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 4 points.

DL 371 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 371thin sample	346	85.5%	43 min	2.31%	A
All Delta Air Lines on ATL–LGA	4,936	76.7%	66 min	2.96%	B
All carriers on ATL–LGA	8,344	73.4%	75 min	3.61%	C−
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 371 quarter by quarter

DL 371 did not run the same all year. Its best quarter was Apr–Jun 2026 at 93.9% on time and its weakest Oct–Dec 2025 at 76.2%, a swing of 18 points on roughly 87 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 flights91.2%
Oct–Dec 202582 flights76.2%
Jan–Mar 202689 flights80.0%
Apr–Jun 202683 flights93.9%

Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 371 ranged from 81.6% on Sunday to 92.2% on Friday. With about 49 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 371 runs late

One category carries most of the weight here. Carrier accounts for 53% of the 2,097 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
53%
National Airspace System
34%
Late-arriving aircraft
10%
Security
1%
Extreme weather
1%

The largest share of delay minutes, 53%, 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 1,119 of the 2,097 delay minutes reported here. The split is drawn from 2,097 delay minutes reported on DL 371.

Cancellations sit at 2.31% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 3.0% 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 762 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 346 flights under DL 371 in the data flew ATL to LGA. 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. 346 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 371

For a booking, read DL 371 as 85.5% on time with 2.31% cancelled over 346 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