Flight Reliability
DL 806 · Delta Air Lines
New York → Las Vegas (JFK–LAS)96% of its flights flew this route. The rest (ATL–DAY) are included in these numbers.
81
Pretty Reliable
WanderNerd Reliability Score
- 79%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 1.6%
- Cancelled
- 8 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
DL 806 departing between 9 PM–12 AM arrived on time 100% of the time, versus 78% between 3–6 PM.
Skip Thursday if you can.
DL 806 arrived on time 86% of the time on Fridays. On Thursdays: 75%.
Slipping a little lately.
DL 806 arrived on time 82% of the time over the last three months in the data, compared with 88% in the three months before that.
The breakdown
- Mon77%(51 flights)
- Tue77%(52 flights)
- Wed78%(51 flights)
- Thu75%(52 flights)
- Fri86%(51 flights)
- Sat79%(52 flights)
- Sun84%(50 flights)
- 3–6 PM78%(343 flights)
- 6–9 PM—(4 flights)
- 9 PM–12 AM100%(12 flights)
80%
May
Jun 73% → May 80% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 73% | 30 |
| July 2025 | 60% | 30 |
| August 2025 | 94% | 31 |
| September 2025 | 73% | 30 |
| October 2025 | 68% | 31 |
| November 2025 | 73% | 30 |
| December 2025 | 97% | 31 |
| January 2026 | 90% | 30 |
| February 2026 | 77% | 26 |
| March 2026 | 84% | 31 |
| April 2026 | 83% | 29 |
| May 2026 | 80% | 30 |
- Departures on time
- 83%
- Diverted
- 0%
- Flights flown
- 359
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 365 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.