Flight Reliability
DL 764 · Delta Air Lines
San Diego → Detroit (SAN–DTW)
94
Nerd Approved
WanderNerd Reliability Score
- 91%
- Arrive within 15 minutes
- 9 min early
- Average arrival delay
- 1.4%
- Cancelled
- 11 min early
- Median arrival delay
Based on 352 historical flights. Data through May 2026.
What the data says
Thursday is the weak spot.
DL 764 arrived on time 96% of the time on Sundays. On Thursdays: 86%.
A bit ahead of the SAN–DTW route.
DL 764 arrived on time 91% of the time, versus 86% across the SAN–DTW route.
Better than the Delta Air Lines network average.
DL 764 arrived on time 91% of the time, versus 81% across the Delta Air Lines network.
Recent months have been rougher.
DL 764 arrived on time 84% of the time over the last three months in the data, compared with 94% in the three months before that.
The breakdown
- Mon89%(52 flights)
- Tue94%(47 flights)
- Wed94%(46 flights)
- Thu86%(51 flights)
- Fri94%(50 flights)
- Sat88%(50 flights)
- Sun96%(51 flights)
92%
May
Jun 93% → May 92% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 93% | 28 |
| July 2025 | 87% | 31 |
| August 2025 | 93% | 30 |
| September 2025 | 96% | 24 |
| October 2025 | 100% | 31 |
| November 2025 | 93% | 30 |
| December 2025 | 93% | 30 |
| January 2026 | 93% | 30 |
| February 2026 | 96% | 28 |
| March 2026 | 68% | 31 |
| April 2026 | 93% | 30 |
| May 2026 | 92% | 24 |
- Departures on time
- 93%
- Diverted
- 0%
- Flights flown
- 347
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 352 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.