Flight Reliability
DL 3515 · Delta Air Lines
Tucson → Los Angeles (TUS–LAX)
100
Nerd Approved
WanderNerd Reliability Score
- 95%
- Arrive within 15 minutes
- 12 min early
- Average arrival delay
- 0%
- Cancelled
- 18 min early
- Median arrival delay
Based on 177 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
DL 3515 arrived on time 100% of the time on Mondays. On Fridays: 88%.
Better than the TUS–LAX route average.
DL 3515 arrived on time 95% of the time, versus 86% across the TUS–LAX route.
Better than the Delta Air Lines network average.
DL 3515 arrived on time 95% of the time, versus 81% across the Delta Air Lines network.
It basically never cancels.
Out of 177 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon100%(26 flights)
- Tue96%(25 flights)
- Wed100%(25 flights)
- Thu96%(25 flights)
- Fri88%(25 flights)
- Sat96%(25 flights)
- Sun89%(26 flights)
100%
Nov
Jun 96% → Nov 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 96% | 23 |
| July 2025 | 94% | 31 |
| August 2025 | 90% | 31 |
| September 2025 | 97% | 30 |
| October 2025 | 94% | 31 |
| November 2025 | 100% | 30 |
- Departures on time
- 92%
- Diverted
- 0%
- Flights flown
- 177
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 177 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.