Flight number record
DL 557
Delta Air Lines · Atlanta to New York
- Route
- ATL → LGA
- Departs
- 09:30
- Flights
- 336
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 557, check with Delta Air Lines.
DL 557 lands a B, 7 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 50 minutes on average. That rests on 336 flights, with a median arrival 8 minutes early.
Set against the rest of the country, DL 557's record is 7 points better than the US average of 77.3%. That gap is worth roughly 66 fewer late arrivals for every thousand flights.
Key figures
On time
83.9%
Arrivals under 15 minutes late, of 329 completed flights
Avg delay
50 min
Across delayed arrivals only, not all flights
Cancelled
1.79%
National rate is 1.89%
1 hour+ late
4.0%
National rate is 8.3%
These figures cover 336 flights between September 2025 and August 2026. The median arrival is 8 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.
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Schedule
When DL 557 flies
DL 557 is scheduled to leave Atlanta (ATL) at 09:30 local time and reach New York (LGA) at 11:43. That slot held for 320 of the 336 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 09:30320 flights95.2%
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 09:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 557 runs level with that at 83.9%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
DL 557 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 557 is 12 points ahead of 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 beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 557thin sample | 336 | 83.9% | 50 min | 1.79% | B |
| 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 557 quarter by quarter
DL 557 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Jul–Sep 2026 at 76.9%, a swing of 16 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 flights93.3%
- Oct–Dec 202590 flights82.2%
- Jan–Mar 202678 flights86.3%
- Apr–Jun 202685 flights84.5%
- Jul–Sep 202653 flights76.9%
Scale runs 70% to 100%.
By weekday, DL 557 did best on Friday at 92.2% on time and worst on Thursday at 78.4%. Each day rests on about 48 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 557 runs when it is late
DL 557 often beats the schedule: 101 of 329 completed flights, 31%, arrived 15 minutes or more early. The 53 late arrivals split 24 under half an hour, 16 between 30 and 60 minutes, and 13 an hour or more.
- 15+ min early101 flights30.7%
- Within 15 min175 flights53.2%
- 15–29 min late24 flights7.3%
- 30–59 min late16 flights4.9%
- 1–2 hours late9 flights2.7%
- 2+ hours late4 flights1.2%
Scale runs 0% to 100%.
Share of 329 completed flights by arrival against schedule.
7 of 49 late departures made up the time and arrived on time, 14% of them. 11 flights left on time and still arrived late.
The worst days
Worst days for DL 557
The latest arrival of the period was on 13 October 2025, 3 hours 40 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 13 October 2025 | 3 hours 40 minutes | Carrier |
| 14 December 2025 | 3 hours 23 minutes | National Airspace System |
| 27 August 2026 | 2 hours 24 minutes | National Airspace System |
| 8 December 2025 | 2 hours 4 minutes | Carrier |
| 10 October 2025 | 1 hour 52 minutes | Carrier |
Delay causes
Why DL 557 runs late
Carrier accounts for 50% of the 2,628 delay minutes carriers reported here, and the remaining four split what is left.
- 50%Carrier
- 41%National Airspace System
- 10%Late-arriving aircraft
41% 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 1,066 minutes out of 2,628, against a national NAS share of 21%. The split is drawn from 2,628 delay minutes reported on DL 557.
Cancellations sit at 1.79% against a national 1.89%, which is ordinary. Diversions add another 0.30%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.0% 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.
The same number turns up on one other city pair in the data, including DTW to MSN (2), but none flew often enough under DL 557 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. 336 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 557
For a booking, read DL 557 as 83.9% on time with 1.79% cancelled over 336 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 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
- 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.