Flight Reliability
DL 5150 · Delta Air Lines
New York → Raleigh–Durham (JFK–RDU)97% of its flights flew this route. The rest (MSP–FSD) are included in these numbers.
52
A Little Dicey
WanderNerd Reliability Score
- 75%
- Arrive within 15 minutes
- 10 min
- Average arrival delay
- 7.5%
- Cancelled
- 9 min early
- Median arrival delay
Based on 361 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 5150 arrived on time 92% of the time on Tuesdays and just 62% on Sundays. That gap is worth planning around.
A bit behind the Delta Air Lines network.
DL 5150 arrived on time 75% of the time, versus 81% across the Delta Air Lines network.
Keep a backup plan handy.
DL 5150 was cancelled 7.5% of the time. Typical for U.S. flights is around 1–2%.
The breakdown
- Mon62%(47 flights)
- Tue92%(47 flights)
- Wed72%(47 flights)
- Thu79%(47 flights)
- Fri85%(48 flights)
- Sat76%(50 flights)
- Sun62%(47 flights)
- 3–6 PM76%(322 flights)
- 6–9 PM73%(11 flights)
77%
May
Jun 63% → May 77% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 63% | 24 |
| July 2025 | 64% | 22 |
| August 2025 | 81% | 31 |
| September 2025 | 83% | 29 |
| October 2025 | 73% | 30 |
| November 2025 | 77% | 30 |
| December 2025 | 60% | 25 |
| January 2026 | 82% | 27 |
| February 2026 | 84% | 25 |
| March 2026 | 83% | 30 |
| April 2026 | 73% | 30 |
| May 2026 | 77% | 30 |
- Departures on time
- 74%
- Diverted
- 0.3%
- Flights flown
- 333
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 361 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.