Flight Reliability
DL 1662 · Delta Air Lines
Salt Lake City → Las Vegas (SLC–LAS)
87
Pretty Reliable
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 0.3%
- Cancelled
- 6 min early
- Median arrival delay
Based on 364 historical flights. Data through May 2026.
What the data says
Thursdays have been rough.
DL 1662 arrived on time 92% of the time on Wednesdays and just 67% on Thursdays. That gap is worth planning around.
It basically never cancels.
Out of 364 scheduled flights, only 0.3% were cancelled.
The breakdown
- Mon79%(52 flights)
- Tue83%(52 flights)
- Wed92%(52 flights)
- Thu67%(49 flights)
- Fri79%(52 flights)
- Sat90%(52 flights)
- Sun76%(53 flights)
77%
May
Jun 63% → May 77% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 63% | 30 |
| July 2025 | 81% | 31 |
| August 2025 | 74% | 31 |
| September 2025 | 83% | 30 |
| October 2025 | 90% | 31 |
| November 2025 | 86% | 29 |
| December 2025 | 77% | 31 |
| January 2026 | 87% | 30 |
| February 2026 | 85% | 27 |
| March 2026 | 90% | 31 |
| April 2026 | 77% | 30 |
| May 2026 | 77% | 31 |
- Departures on time
- 84%
- Diverted
- 0.3%
- Flights flown
- 362
- 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.