Flight number record
DL 433
Delta Air Lines · Atlanta to New York
- Route
- ATL → LGA
- Departs
- 15:30
- Flights
- 261
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s DL 433, check with Delta Air Lines.
DL 433 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 8 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 261 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.6%, so DL 433 runs 8 points behind the country as a whole. Across a thousand flights that is about 75 extra late arrivals.
Key figures
On time
70.1%
Arrivals under 15 minutes late, of 254 completed flights
Avg delay
81 min
Across delayed arrivals only, not all flights
Cancelled
1.53%
National rate is 1.81%
1 hour+ late
12.2%
National rate is 8.1%
These figures cover 261 flights between July 2025 and June 2026. Beyond the headline rate, 12.2% 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 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 242 of the 261 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 15:30242 flights92.7%
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 15:30 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 433 runs 2 points worse at 70.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
DL 433 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 433 is 3 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 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 433thin sample | 261 | 70.1% | 81 min | 1.53% | 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 433 quarter by quarter
Quarter by quarter DL 433 held fairly steady: 69.5% in Jul–Sep 2025, 65.6% in Oct–Dec 2025 and 74.4% in Apr–Jun 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202586 flights69.5%
- Oct–Dec 202592 flights65.6%
- Jan–Mar 20264 flights—
- Apr–Jun 202679 flights74.4%
Scale runs 55% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, DL 433 did best on Saturday at 78.1% on time and worst on Friday at 63.2%. Each day rests on about 37 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Delay causes
Why DL 433 runs late
One category carries most of the weight here. National Airspace System accounts for 71% of the 6,173 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.
- 71%National Airspace System
- 18%Carrier
- 10%Late-arriving aircraft
- 1%Extreme weather
71% 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 4,352 minutes out of 6,173, against a national NAS share of 21%. The split is drawn from 6,173 delay minutes reported on DL 433.
Cancellations sit at 1.53% against a national 1.81%, which is ordinary. Diversions add another 1.15%.
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. 12.2% 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 five 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. 261 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, DL 433 is a flight to put a long connection behind. 12.2% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
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.