Flight number record
DL 993
Delta Air Lines · New York to Atlanta
- Route
- LGA → ATL
- Departs
- 11:00
- Flights
- 352
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 993, check with Delta Air Lines.
DL 993 lands a B, 5 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 352 flights, with a median arrival 11 minutes early.
Set against the rest of the country, DL 993's record is 5 points better than the US average of 77.3%. That gap is worth roughly 53 fewer late arrivals for every thousand flights.
Key figures
On time
82.6%
Arrivals under 15 minutes late, of 345 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
1.42%
National rate is 1.89%
1 hour+ late
4.9%
National rate is 8.3%
These figures cover 352 flights between September 2025 and August 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
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 256 of 352 flights, with 10:59 (87 flights) next.
- Departs 11:00256 flights72.7%
- Departs 10:5987 flights24.7%
Scale runs 0% to 100%.
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 78.3%, and DL 993 runs 4 points better at 82.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
DL 993 next to LGA to ATL
Every carrier on LGA to ATL combined arrived on time 75.5% of the time across 8,500 flights, so DL 993 is 7 points ahead of it. Delta flew 4,935 flights on the same city pair under all its flight numbers, including this one, and those ran 79.1% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 993thin sample | 352 | 82.6% | 55 min | 1.42% | B |
| All Delta Air Lines on LGA–ATL | 4,935 | 79.1% | 73 min | 3.55% | B− |
| All carriers on LGA–ATL | 8,500 | 75.5% | 79 min | 4.36% | B− |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 993 quarter by quarter
DL 993 did not run the same all year. Its best quarter was Apr–Jun 2026 at 87.8% on time and its weakest Oct–Dec 2025 at 73.6%, a swing of 14 points on roughly 88 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 202526 flights—
- Oct–Dec 202591 flights73.6%
- Jan–Mar 202690 flights83.7%
- Apr–Jun 202683 flights87.8%
- Jul–Sep 202662 flights80.0%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, DL 993 did best on Friday at 92.3% on time and worst on Monday at 72.5%. Each day rests on about 50 flights, so a gap of 20 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 993 runs when it is late
DL 993 often beats the schedule: 142 of 345 completed flights, 41%, arrived 15 minutes or more early. The 60 late arrivals split 17 under half an hour, 26 between 30 and 60 minutes, and 17 an hour or more.
- 15+ min early142 flights41.2%
- Within 15 min143 flights41.4%
- 15–29 min late17 flights4.9%
- 30–59 min late26 flights7.5%
- 1–2 hours late12 flights3.5%
- 2+ hours late5 flights1.4%
Scale runs 0% to 100%.
Share of 345 completed flights by arrival against schedule.
7 of 46 late departures made up the time and arrived on time, 15% of them. In the other direction, 21 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at ATL.
The worst days
Worst days for DL 993
The latest arrival of the period was on 14 December 2025, 4 hours 59 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 14 December 2025 | 4 hours 59 minutes | Late-arriving aircraft |
| 1 November 2025 | 3 hours 17 minutes | Carrier |
| 15 June 2026 | 2 hours 38 minutes | Carrier |
| 26 January 2026 | 2 hours 15 minutes | Late-arriving aircraft |
| 20 August 2026 | 2 hours 2 minutes | Carrier |
Delay causes
Why DL 993 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 3,318 reported delay minutes.
- 41%Carrier
- 34%National Airspace System
- 25%Late-arriving aircraft
34% 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 1,139 minutes out of 3,318, against a national NAS share of 21%. The split is drawn from 3,318 delay minutes reported on DL 993.
Cancellations sit at 1.42% against a national 1.89%, which is ordinary. Diversions add another 0.57%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.9% land an hour or more behind schedule, against 8.3% 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.
Every one of the 352 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. 352 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 82.6% on time with 1.42% cancelled over 352 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- LGA to ATL, every carrier and departure
- ATL to LGA, the return direction
- Delta Air Lines 550 on the same route89.4%
- Frontier Airlines 3287 on the same route60.8%
- Delta Air Lines 992 on the same route86.0%
- Delta Air Lines 968 on the same route74.1%
- Delta Air Lines 974 on the same route79.6%
- Delta Air Lines 342 on the same route93.1%
- LaGuardia (LGA) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.