Flight Reliability
DL 1009 · Delta Air Lines
Newark → Salt Lake City (EWR–SLC)
78
Usually Fine
WanderNerd Reliability Score
- 79%
- Arrive within 15 minutes
- 12 min
- Average arrival delay
- 1.6%
- Cancelled
- 0 min
- Median arrival delay
Based on 364 historical flights. Data through May 2026.
What the data says
Saturdays have been rough.
DL 1009 arrived on time 89% of the time on Fridays and just 62% on Saturdays. That gap is worth planning around.
Trending in the right direction.
DL 1009 arrived on time 87% of the time over the last three months in the data, compared with 70% in the three months before that.
The breakdown
- Mon80%(50 flights)
- Tue75%(51 flights)
- Wed80%(50 flights)
- Thu85%(52 flights)
- Fri89%(52 flights)
- Sat62%(50 flights)
- Sun81%(52 flights)
90%
May
Jun 63% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 63% | 30 |
| July 2025 | 81% | 31 |
| August 2025 | 93% | 30 |
| September 2025 | 93% | 30 |
| October 2025 | 77% | 30 |
| November 2025 | 66% | 29 |
| December 2025 | 60% | 30 |
| January 2026 | 73% | 30 |
| February 2026 | 77% | 26 |
| March 2026 | 77% | 31 |
| April 2026 | 93% | 29 |
| May 2026 | 90% | 31 |
- Departures on time
- 85%
- Diverted
- 0.3%
- Flights flown
- 357
- 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.