Flight Reliability
DL 5411 · Delta Air Lines
New York → Portland (JFK–PWM)
54
A Little Dicey
WanderNerd Reliability Score
- 79%
- Arrive within 15 minutes
- 4 min early
- Average arrival delay
- 8.4%
- Cancelled
- 16 min early
- Median arrival delay
Based on 347 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 5411 arrived on time 89% of the time on Saturdays and just 70% on Sundays. That gap is worth planning around.
Keep a backup plan handy.
DL 5411 was cancelled 8.4% of the time. Typical for U.S. flights is around 1–2%.
Ticking up lately.
DL 5411 arrived on time 79% of the time over the last three months in the data, compared with 73% in the three months before that.
The breakdown
- Mon84%(44 flights)
- Tue85%(48 flights)
- Wed70%(47 flights)
- Thu75%(44 flights)
- Fri81%(47 flights)
- Sat89%(45 flights)
- Sun70%(43 flights)
83%
May
Jun 68% → May 83% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 68% | 25 |
| July 2025 | 68% | 22 |
| August 2025 | 84% | 31 |
| September 2025 | 93% | 28 |
| October 2025 | 83% | 29 |
| November 2025 | 86% | 28 |
| December 2025 | 53% | 17 |
| January 2026 | 88% | 24 |
| February 2026 | 80% | 25 |
| March 2026 | 72% | 29 |
| April 2026 | 80% | 30 |
| May 2026 | 83% | 30 |
- Departures on time
- 76%
- Diverted
- 0%
- Flights flown
- 318
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 347 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.