Flight Reliability
DL 4045 · Delta Air Lines
Salt Lake City → Palm Springs (SLC–PSP)
100
Nerd Approved
WanderNerd Reliability Score
- 93%
- Arrive within 15 minutes
- 8 min early
- Average arrival delay
- 0%
- Cancelled
- 11 min early
- Median arrival delay
Based on 364 historical flights. Data through May 2026.
What the data says
Thursday is the weak spot.
DL 4045 arrived on time 98% of the time on Wednesdays. On Thursdays: 84%.
Better than the Delta Air Lines network average.
DL 4045 arrived on time 93% of the time, versus 81% across the Delta Air Lines network.
It basically never cancels.
Out of 364 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon90%(52 flights)
- Tue94%(52 flights)
- Wed98%(52 flights)
- Thu84%(51 flights)
- Fri96%(52 flights)
- Sat92%(52 flights)
- Sun93%(53 flights)
100%
May
Jun 87% → May 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 87% | 30 |
| July 2025 | 97% | 31 |
| August 2025 | 81% | 31 |
| September 2025 | 93% | 30 |
| October 2025 | 94% | 31 |
| November 2025 | 100% | 29 |
| December 2025 | 97% | 31 |
| January 2026 | 90% | 31 |
| February 2026 | 93% | 28 |
| March 2026 | 87% | 31 |
| April 2026 | 93% | 30 |
| May 2026 | 100% | 31 |
- Departures on time
- 90%
- Diverted
- 0%
- Flights flown
- 364
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 364 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.