Flight Reliability
DL 550 · Delta Air Lines
New York → Atlanta (LGA–ATL)
84
Pretty Reliable
WanderNerd Reliability Score
- 90%
- Arrive within 15 minutes
- 3 min early
- Average arrival delay
- 3.6%
- Cancelled
- 8 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 550 arrived on time 96% of the time on Fridays. On Sundays: 82%.
Better than the LGA–ATL route average.
DL 550 arrived on time 90% of the time, versus 76% across the LGA–ATL route.
Better than the Delta Air Lines network average.
DL 550 arrived on time 90% of the time, versus 81% across the Delta Air Lines network.
Keep a backup plan handy.
DL 550 was cancelled 3.6% of the time. Typical for U.S. flights is around 1–2%.
The breakdown
- Mon96%(46 flights)
- Tue84%(51 flights)
- Wed90%(52 flights)
- Thu92%(52 flights)
- Fri96%(51 flights)
- Sat92%(49 flights)
- Sun82%(51 flights)
90%
May
Jun 90% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 90% | 29 |
| July 2025 | 97% | 30 |
| August 2025 | 94% | 31 |
| September 2025 | 97% | 30 |
| October 2025 | 97% | 30 |
| November 2025 | 79% | 28 |
| December 2025 | 86% | 28 |
| January 2026 | 80% | 30 |
| February 2026 | 89% | 26 |
| March 2026 | 90% | 29 |
| April 2026 | 97% | 30 |
| May 2026 | 90% | 31 |
- Departures on time
- 93%
- Diverted
- 0%
- Flights flown
- 352
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 365 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.