Flight Reliability
DL 525 · Delta Air Lines
Atlanta → New York (ATL–LGA)99% of its flights flew this route. The rest (ATL–MSN, LAS–JFK) are included in these numbers.
70
Usually Fine
WanderNerd Reliability Score
- 73%
- Arrive within 15 minutes
- 11 min
- Average arrival delay
- 1.8%
- Cancelled
- 2 min early
- Median arrival delay
Based on 340 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 525 arrived on time 78% of the time on Wednesdays. On Sundays: 65%.
Lagging the Delta Air Lines network.
DL 525 arrived on time 73% of the time, versus 81% across the Delta Air Lines network.
Ticking up lately.
DL 525 arrived on time 80% of the time over the last three months in the data, compared with 76% in the three months before that.
The breakdown
- Mon70%(46 flights)
- Tue73%(48 flights)
- Wed78%(51 flights)
- Thu77%(51 flights)
- Fri76%(50 flights)
- Sat72%(36 flights)
- Sun65%(49 flights)
- 9 AM–12 PM—(4 flights)
- 12–3 PM73%(327 flights)
73%
May
Jun 57% → May 73% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 57% | 28 |
| July 2025 | 61% | 31 |
| August 2025 | 73% | 30 |
| September 2025 | 85% | 27 |
| October 2025 | 77% | 30 |
| November 2025 | 57% | 30 |
| December 2025 | 60% | 20 |
| January 2026 | 89% | 27 |
| February 2026 | 78% | 27 |
| March 2026 | 86% | 29 |
| April 2026 | 81% | 26 |
| May 2026 | 73% | 26 |
- Departures on time
- 76%
- Diverted
- 0.9%
- Flights flown
- 331
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 340 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.