Flight Reliability
DL 1161 · Delta Air Lines
Salt Lake City → Los Angeles (SLC–LAX)
92
Nerd Approved
WanderNerd Reliability Score
- 86%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 0.6%
- Cancelled
- 9 min early
- Median arrival delay
Based on 351 historical flights. Data through May 2026.
What the data says
Tuesday is the weak spot.
DL 1161 arrived on time 94% of the time on Wednesdays. On Tuesdays: 82%.
A bit ahead of the Delta Air Lines network.
DL 1161 arrived on time 86% of the time, versus 81% across the Delta Air Lines network.
Ticking up lately.
DL 1161 arrived on time 88% of the time over the last three months in the data, compared with 84% in the three months before that.
The breakdown
- Mon85%(48 flights)
- Tue82%(49 flights)
- Wed94%(49 flights)
- Thu86%(50 flights)
- Fri86%(50 flights)
- Sat86%(51 flights)
- Sun83%(52 flights)
87%
May
Jun 90% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 90% | 30 |
| July 2025 | 74% | 31 |
| August 2025 | 100% | 26 |
| September 2025 | 86% | 22 |
| October 2025 | 81% | 31 |
| November 2025 | 87% | 30 |
| December 2025 | 79% | 29 |
| January 2026 | 94% | 31 |
| February 2026 | 78% | 27 |
| March 2026 | 94% | 31 |
| April 2026 | 83% | 30 |
| May 2026 | 87% | 31 |
- Departures on time
- 83%
- Diverted
- 0%
- Flights flown
- 349
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 351 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.