Flight Reliability
DL 990 · Delta Air Lines
New York → Atlanta (LGA–ATL)
73
Usually Fine
WanderNerd Reliability Score
- 84%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 4.1%
- Cancelled
- 9 min early
- Median arrival delay
Based on 339 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 990 arrived on time 90% of the time on Fridays. On Sundays: 79%.
Better than the LGA–ATL route average.
DL 990 arrived on time 84% of the time, versus 76% across the LGA–ATL route.
Keep a backup plan handy.
DL 990 was cancelled 4.1% of the time. Typical for U.S. flights is around 1–2%.
The breakdown
- Mon82%(45 flights)
- Tue84%(50 flights)
- Wed84%(50 flights)
- Thu82%(51 flights)
- Fri90%(51 flights)
- Sat82%(28 flights)
- Sun79%(48 flights)
- 9 AM–12 PM83%(133 flights)
- 12–3 PM84%(190 flights)
90%
May
Jun 86% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 86% | 28 |
| July 2025 | 82% | 28 |
| August 2025 | 87% | 30 |
| September 2025 | 93% | 30 |
| October 2025 | 71% | 28 |
| November 2025 | 84% | 25 |
| December 2025 | 70% | 27 |
| January 2026 | 88% | 24 |
| February 2026 | 91% | 22 |
| March 2026 | 88% | 24 |
| April 2026 | 74% | 27 |
| May 2026 | 90% | 30 |
- Departures on time
- 85%
- Diverted
- 0.6%
- Flights flown
- 323
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 339 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.