Flight Reliability
DL 766 · Delta Air Lines
Detroit → Las Vegas (DTW–LAS)
75
Usually Fine
WanderNerd Reliability Score
- 71%
- Arrive within 15 minutes
- 15 min
- Average arrival delay
- 0%
- Cancelled
- 1 min early
- Median arrival delay
Based on 360 historical flights. Data through May 2026.
What the data says
Monday is the weak spot.
DL 766 arrived on time 75% of the time on Thursdays. On Mondays: 65%.
Lagging the DTW–LAS route.
DL 766 arrived on time 71% of the time, versus 78% across the DTW–LAS route.
Lagging the Delta Air Lines network.
DL 766 arrived on time 71% of the time, versus 81% across the Delta Air Lines network.
It basically never cancels.
Out of 360 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon65%(52 flights)
- Tue71%(52 flights)
- Wed69%(52 flights)
- Thu75%(51 flights)
- Fri73%(52 flights)
- Sat68%(47 flights)
- Sun72%(53 flights)
- 12–3 PM—(1 flights)
- 3–6 PM70%(358 flights)
58%
May
Jun 73% → May 58% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 73% | 30 |
| July 2025 | 60% | 30 |
| August 2025 | 84% | 31 |
| September 2025 | 83% | 30 |
| October 2025 | 87% | 31 |
| November 2025 | 67% | 30 |
| December 2025 | 58% | 31 |
| January 2026 | 58% | 31 |
| February 2026 | 75% | 28 |
| March 2026 | 61% | 28 |
| April 2026 | 82% | 28 |
| May 2026 | 58% | 31 |
- Departures on time
- 72%
- Diverted
- 0.3%
- Flights flown
- 359
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 360 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.