Flight number record

DL 1078

Delta Air Lines · New York to Detroit

Route: LGA → DTW
Departs: 09:30
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1078, check with Delta Air Lines.

DL 1078 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 13 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 45 minutes. That rests on 364 flights, with a median arrival 13 minutes early.

Set against the rest of the country, DL 1078's record is 13 points better than the US average of 77.6%. That gap is worth roughly 128 fewer late arrivals for every thousand flights.

On time

90.4%

Arrivals under 15 minutes late, of 355 completed flights

Avg delay

44 min

Across delayed arrivals only, not all flights

Cancelled

2.47%

National rate is 1.81%

1 hour+ late

2.3%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 2026. The median arrival is 13 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 1078 flies

DL 1078 flies LGA to DTW without a single fixed slot. Its most common scheduled departure was 09:30, used on 145 of 364 flights, with 09:00 (81 flights) and 09:35 (52 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:30145 flights39.8%
Departs 09:0081 flights22.3%
Departs 09:3552 flights14.3%

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 09:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 1078 runs 6 points better at 90.4%. 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 1078 next to LGA to DTW

Every carrier on LGA to DTW combined arrived on time 78.0% of the time across 4,011 flights, so DL 1078 is 12 points ahead of it. Delta flew 1,980 flights on the same city pair under all its flight numbers, including this one, and those ran 81.1% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 9 points.

DL 1078 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1078thin sample	364	90.4%	44 min	2.47%	A
All Delta Air Lines on LGA–DTW	1,980	81.1%	85 min	3.54%	B−
All carriers on LGA–DTW	4,011	78.0%	82 min	4.94%	B−
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1078 quarter by quarter

Quarter by quarter DL 1078 held fairly steady: 91.2% in Jul–Sep 2025, 90.0% in Oct–Dec 2025, 94.0% in Jan–Mar 2026 and 86.7% 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 flights91.2%
Oct–Dec 202592 flights90.0%
Jan–Mar 202690 flights94.0%
Apr–Jun 202691 flights86.7%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1078 did best on Wednesday at 98.0% on time and worst on Sunday at 85.4%. Each day rests on about 52 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1078 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 1,498 reported delay minutes.

National Airspace System
41%
Carrier
37%
Late-arriving aircraft
22%

41% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 610 minutes out of 1,498, against a national NAS share of 21%. The split is drawn from 1,498 delay minutes reported on DL 1078.

Cancellations sit at 2.47% 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 2.3% 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 502 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 1078 in the data flew LGA to DTW. 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 1078

For a booking, read DL 1078 as 90.4% on time with 2.47% 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