Flight Reliability
DL 1930 · Delta Air Lines
New York → Charlotte Amalie (JFK–STT)88% of its flights flew this route. The rest (ATL–SJU, SJU–ATL) are included in these numbers.
84
Pretty Reliable
WanderNerd Reliability Score
- 86%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 2.2%
- Cancelled
- 10 min early
- Median arrival delay
Based on 269 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 1930 arrived on time 93% of the time on Thursdays. On Sundays: 78%.
A bit ahead of the Delta Air Lines network.
DL 1930 arrived on time 86% of the time, versus 81% across the Delta Air Lines network.
Ticking up lately.
DL 1930 arrived on time 86% of the time over the last three months in the data, compared with 80% in the three months before that.
The breakdown
- Mon79%(29 flights)
- Tue84%(31 flights)
- Wed90%(31 flights)
- Thu93%(40 flights)
- Fri88%(40 flights)
- Sat88%(50 flights)
- Sun78%(41 flights)
- 6–9 AM86%(197 flights)
- 9 AM–12 PM85%(48 flights)
- 12–3 PM88%(16 flights)
- 3–6 PM—(1 flights)
90%
May
Jun 93% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 93% | 30 |
| July 2025 | 90% | 31 |
| September 2025 | 92% | 24 |
| December 2025 | 79% | 14 |
| January 2026 | 89% | 27 |
| February 2026 | 73% | 26 |
| March 2026 | 77% | 30 |
| April 2026 | 90% | 30 |
| May 2026 | 90% | 31 |
- Departures on time
- 90%
- Diverted
- 0.4%
- Flights flown
- 262
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 269 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.