Flight Reliability
DL 464 · Delta Air Lines
Boston → Salt Lake City (BOS–SLC)
79
Usually Fine
WanderNerd Reliability Score
- 79%
- Arrive within 15 minutes
- 14 min
- Average arrival delay
- 0.8%
- Cancelled
- 4 min early
- Median arrival delay
Based on 353 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
DL 464 departing between 3–6 PM arrived on time 86% of the time, versus 79% between 9 AM–12 PM.
Skip Saturday if you can.
DL 464 arrived on time 82% of the time on Fridays. On Saturdays: 75%.
The breakdown
- Mon80%(50 flights)
- Tue78%(49 flights)
- Wed80%(46 flights)
- Thu82%(49 flights)
- Fri82%(51 flights)
- Sat75%(52 flights)
- Sun77%(51 flights)
- 9 AM–12 PM79%(334 flights)
- 3–6 PM86%(14 flights)
71%
May
Jun 87% → May 71% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 87% | 30 |
| July 2025 | 74% | 31 |
| August 2025 | 80% | 30 |
| September 2025 | 90% | 30 |
| October 2025 | 87% | 30 |
| November 2025 | 79% | 28 |
| December 2025 | 68% | 28 |
| January 2026 | 79% | 28 |
| February 2026 | 78% | 23 |
| March 2026 | 72% | 29 |
| April 2026 | 83% | 30 |
| May 2026 | 71% | 31 |
- Departures on time
- 83%
- Diverted
- 0.6%
- Flights flown
- 348
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 353 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.