Flight number record
DL 524
Delta Air Lines · Atlanta to New York
- Route
- ATL → LGA
- Departs
- 14:30
- Flights
- 324
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 524, check with Delta Air Lines.
DL 524 sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 324 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.3%, so DL 524 runs 7 points behind the country as a whole. Across a thousand flights that is about 70 extra late arrivals.
Key figures
On time
70.3%
Arrivals under 15 minutes late, of 310 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
4.01%
National rate is 1.89%
1 hour+ late
11.3%
National rate is 8.3%
These figures cover 324 flights between September 2025 and August 2026. Beyond the headline rate, 11.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 524 flies
DL 524 flies ATL to LGA without a single fixed slot. Its most common scheduled departure was 14:30, used on 226 of 324 flights, with 14:59 (88 flights) next.
- Departs 14:30226 flights69.8%
- Departs 14:5988 flights27.2%
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 14:30 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 524 runs level with that at 70.3%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 524 next to ATL to LGA
Every carrier on ATL to LGA combined arrived on time 72.3% of the time across 8,502 flights, so DL 524 is 2 points behind it. Delta flew 4,937 flights on the same city pair under all its flight numbers, including this one, and those ran 75.9% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 524thin sample | 324 | 70.3% | 73 min | 4.01% | C− |
| All Delta Air Lines on ATL–LGA | 4,937 | 75.9% | 66 min | 3.48% | B− |
| All carriers on ATL–LGA | 8,502 | 72.3% | 79 min | 4.34% | C− |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 524 quarter by quarter
DL 524 did not run the same all year. Its best quarter was Apr–Jun 2026 at 77.2% on time and its weakest Jul–Sep 2026 at 58.7%, a swing of 19 points on roughly 81 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 202579 flights63.6%
- Jan–Mar 202686 flights70.7%
- Apr–Jun 202680 flights77.2%
- Jul–Sep 202653 flights58.7%
Scale runs 50% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, DL 524 did best on Wednesday at 81.6% on time and worst on Thursday at 59.2%. Each day rests on about 46 flights, so a gap of 22 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 524 runs when it is late
The 92 late arrivals split 29 under half an hour, 28 between 30 and 60 minutes, and 35 an hour or more.
- 15+ min early49 flights15.8%
- Within 15 min169 flights54.5%
- 15–29 min late29 flights9.4%
- 30–59 min late28 flights9.0%
- 1–2 hours late21 flights6.8%
- 2+ hours late14 flights4.5%
Scale runs 0% to 100%.
Share of 310 completed flights by arrival against schedule.
20 of 96 late departures made up the time and arrived on time, 21% of them. In the other direction, 16 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 LGA.
The worst days
Worst days for DL 524
The latest arrival of the period was on 22 June 2026, 8 hours 21 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 22 June 2026 | 8 hours 21 minutes | National Airspace System |
| 27 August 2026 | 7 hours 6 minutes | National Airspace System |
| 14 June 2026 | 4 hours 48 minutes | Late-arriving aircraft |
| 14 December 2025 | 4 hours 27 minutes | Carrier |
| 10 August 2026 | 4 hours 11 minutes | National Airspace System |
Delay causes
Why DL 524 runs late
National Airspace System accounts for 59% of the 6,668 delay minutes carriers reported here, and the remaining four split what is left.
- 59%National Airspace System
- 24%Carrier
- 14%Late-arriving aircraft
- 3%Extreme weather
59% 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 3,967 minutes out of 6,668, against a national NAS share of 21%. The split is drawn from 6,668 delay minutes reported on DL 524.
Cancellations run at 4.01%, against 1.89% nationally. That is about one flight in 25 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
11.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
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.
The same number turns up on four other city pairs in the data, including SLC to SBA (16), SBA to SLC (16) and GSP to ATL (1), but none flew often enough under DL 524 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ATL to LGA only.
One caution: this is a thin sample. 324 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 524
For a booking, the cancellation rate is the figure to plan around on DL 524: 4.01% of its 324 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- ATL to LGA, every carrier and departure
- LGA to ATL, the return direction
- Delta Air Lines 520 on the same route69.5%
- Frontier Airlines 3288 on the same route36.9%
- Delta Air Lines 513 on the same route87.7%
- Delta Air Lines 997 on the same route67.1%
- Delta Air Lines 371 on the same route84.7%
- Delta Air Lines 434 on the same route62.1%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- LaGuardia (LGA) 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
- How often a connection fails at the major US hubs
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.