Flight number record
DL 524
Delta Air Lines · Atlanta to New York
- Route
- ATL → LGA
- Departs
- 14:30
- Flights
- 330
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 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, 6 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 330 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.6%, so DL 524 runs 6 points behind the country as a whole. Across a thousand flights that is about 57 extra late arrivals.
Key figures
On time
71.9%
Arrivals under 15 minutes late, of 320 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
2.42%
National rate is 1.81%
1 hour+ late
9.7%
National rate is 8.1%
These figures cover 330 flights between July 2025 and June 2026. Beyond the headline rate, 9.7% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
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 232 of 330 flights, with 14:59 (88 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 14:30232 flights70.3%
- Departs 14:5988 flights26.7%
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 14:30 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 524 runs level with that at 71.9%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
DL 524 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 524 is 2 points behind 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 trails by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 524thin sample | 330 | 71.9% | 73 min | 2.42% | C |
| 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 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 Oct–Dec 2025 at 63.6%, a swing of 14 points on roughly 83 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 202585 flights75.6%
- Oct–Dec 202579 flights63.6%
- Jan–Mar 202686 flights70.7%
- Apr–Jun 202680 flights77.2%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, DL 524 did best on Wednesday at 82.0% on time and worst on Thursday at 62.0%. Each day rests on about 47 flights, so a gap of 20 points is worth noticing but could still narrow in another year.
Delay causes
Why DL 524 runs late
One category carries most of the weight here. National Airspace System accounts for 55% of the 6,586 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.
- 55%National Airspace System
- 29%Carrier
- 14%Late-arriving aircraft
- 2%Extreme weather
55% 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 3,635 minutes out of 6,586, against a national NAS share of 21%. The split is drawn from 6,586 delay minutes reported on DL 524.
Cancellations sit at 2.42% against a national 1.81%, which is ordinary. Diversions add another 0.61%.
Connections and routes
What a delay on this flight costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.7% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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. 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.
The same number turns up on four other city pairs in the data, including SBA to SLC (16), SLC to SBA (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. 330 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, read DL 524 as 71.9% on time with 2.42% cancelled over 330 flights. Those are rates from the past twelve months, not a forecast for any particular day.
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 route70.4%
- Frontier Airlines 3288 on the same route40.8%
- Delta Air Lines 997 on the same route66.2%
- Delta Air Lines 513 on the same route88.6%
- Delta Air Lines 371 on the same route85.5%
- Delta Air Lines 434 on the same route62.2%
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.