Flight number record
DL 433
Delta Air Lines · Atlanta to New York
- Route
- ATL → LGA
- Departs
- 15:30
- Flights
- 267
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 433, check with Delta Air Lines.
DL 433 draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 267 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.3%, so DL 433 runs 10 points behind the country as a whole. Across a thousand flights that is about 96 extra late arrivals.
Key figures
On time
67.7%
Arrivals under 15 minutes late, of 257 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
2.62%
National rate is 1.89%
1 hour+ late
13.2%
National rate is 8.3%
These figures cover 267 flights between September 2025 and August 2026. Beyond the headline rate, 13.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 433 flies
DL 433 is scheduled to leave Atlanta (ATL) at 15:30 local time and reach New York (LGA) at 17:49. That slot held for 248 of the 267 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 15:30248 flights92.9%
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 15:30 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 433 runs 4 points worse at 67.7%. 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 433 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 433 is 5 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 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 433thin sample | 267 | 67.7% | 75 min | 2.62% | 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 433 quarter by quarter
DL 433 did not run the same all year. Its best quarter was Jul–Sep 2025 at 83.3% on time and its weakest Jul–Sep 2026 at 50.9%, a swing of 32 points on roughly 67 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 202530 flights83.3%
- Oct–Dec 202592 flights65.6%
- Jan–Mar 20264 flights—
- Apr–Jun 202679 flights74.4%
- Jul–Sep 202662 flights50.9%
Scale runs 40% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, DL 433 did best on Sunday at 74.3% on time and worst on Friday at 60.5%. Each day rests on about 38 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 433 runs when it is late
The 83 late arrivals split 25 under half an hour, 24 between 30 and 60 minutes, and 34 an hour or more.
- 15+ min early40 flights15.6%
- Within 15 min134 flights52.1%
- 15–29 min late25 flights9.7%
- 30–59 min late24 flights9.3%
- 1–2 hours late21 flights8.2%
- 2+ hours late13 flights5.1%
Scale runs 0% to 100%.
Share of 257 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 74 departures that left 15 minutes late or more, only 8 made it up before arrival. In the other direction, 17 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 433
The latest arrival of the period was on 7 August 2026, 7 hours 31 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. Three of the five worst days fell in August 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 August 2026 | 7 hours 31 minutes | National Airspace System |
| 12 June 2026 | 6 hours 28 minutes | National Airspace System |
| 22 May 2026 | 5 hours 7 minutes | National Airspace System |
| 27 August 2026 | 5 hours 4 minutes | National Airspace System |
| 10 August 2026 | 3 hours 53 minutes | National Airspace System |
Delay causes
Why DL 433 runs late
National Airspace System accounts for 66% of the 6,239 delay minutes carriers reported here, and the remaining four split what is left.
- 66%National Airspace System
- 24%Carrier
- 9%Late-arriving aircraft
- 2%Extreme weather
66% 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 4,110 minutes out of 6,239, against a national NAS share of 21%. The split is drawn from 6,239 delay minutes reported on DL 433.
Cancellations run at 2.62%, against 1.89% nationally. That is about one flight in 40 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
13.2% 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 MCO to AUS (38), DTW to RSW (33) and RSW to DTW (33), but none flew often enough under DL 433 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. 267 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 433
For a booking, the cancellation rate is the figure to plan around on DL 433: 2.62% of its 267 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
- What a cancellation rate actually tells you (and what it hides)
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.