Flight number record

DL 993

Delta Air Lines · New York to Atlanta

Route: LGA → ATL
Departs: 11:00
Flights: 348
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 993, check with Delta Air Lines.

DL 993 earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 6 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 55 minutes. That rests on 348 flights, with a median arrival 11 minutes early.

Set against the rest of the country, DL 993's record is 6 points better than the US average of 77.6%. That gap is worth roughly 64 fewer late arrivals for every thousand flights.

On time

84.0%

Arrivals under 15 minutes late, of 343 completed flights

Avg delay

53 min

Across delayed arrivals only, not all flights

Cancelled

1.15%

National rate is 1.81%

1 hour+ late

4.4%

National rate is 8.1%

These figures cover 348 flights between July 2025 and June 2026. The median arrival is 11 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 993 flies

DL 993 flies LGA to ATL without a single fixed slot. Its most common scheduled departure was 11:00, used on 271 of 348 flights, with 10:59 (73 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:00271 flights77.9%
Departs 10:5973 flights21.0%

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 11:00 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and DL 993 runs 5 points better at 84.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 993 next to LGA to ATL

Every carrier on LGA to ATL combined arrived on time 76.6% of the time across 8,343 flights, so DL 993 is 7 points ahead of it. Delta flew 4,933 flights on the same city pair under all its flight numbers, including this one, and those ran 79.9% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 2 points.

DL 993 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 993thin sample	348	84.0%	53 min	1.15%	B
All Delta Air Lines on LGA–ATL	4,933	79.9%	73 min	2.98%	B
All carriers on LGA–ATL	8,343	76.6%	78 min	3.67%	B−
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 993 quarter by quarter

DL 993 did not run the same all year. Its best quarter was Jul–Sep 2025 at 91.7% on time and its weakest Oct–Dec 2025 at 73.6%, 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 202584 flights91.7%
Oct–Dec 202591 flights73.6%
Jan–Mar 202690 flights83.7%
Apr–Jun 202683 flights87.8%

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 993 did best on Tuesday at 92.3% on time and worst on Sunday at 77.6%. Each day rests on about 50 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 993 runs late

One category carries most of the weight here. Carrier accounts for 43% of the 2,930 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
43%
National Airspace System
30%
Late-arriving aircraft
27%

The largest share of delay minutes, 43%, 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 1,250 of the 2,930 delay minutes reported here. The split is drawn from 2,930 delay minutes reported on DL 993.

Cancellations sit at 1.15% against a national 1.81%, which is ordinary. Diversions add another 0.29%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 4.4% 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 348 flights under DL 993 in the data flew LGA to ATL. 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. 348 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 993

For a booking, read DL 993 as 84.0% on time with 1.15% cancelled over 348 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