Flight Reliability
DL 705 · Delta Air Lines
Salt Lake City → New York (SLC–JFK)
90
Nerd Approved
WanderNerd Reliability Score
- 90%
- Arrive within 15 minutes
- 10 min early
- Average arrival delay
- 1.7%
- Cancelled
- 17 min early
- Median arrival delay
Based on 363 historical flights. Data through May 2026.
What the data says
Sunday has been the better bet.
A small edge: 92% on time on Sundays against 88% on Thursdays.
Better than the SLC–JFK route average.
DL 705 arrived on time 90% of the time, versus 82% across the SLC–JFK route.
Better than the Delta Air Lines network average.
DL 705 arrived on time 90% of the time, versus 81% across the Delta Air Lines network.
Slipping a little lately.
DL 705 arrived on time 83% of the time over the last three months in the data, compared with 88% in the three months before that.
The breakdown
- Mon90%(50 flights)
- Tue88%(51 flights)
- Wed90%(52 flights)
- Thu88%(50 flights)
- Fri89%(52 flights)
- Sat90%(51 flights)
- Sun92%(50 flights)
84%
May
Jun 90% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 90% | 30 |
| July 2025 | 87% | 30 |
| August 2025 | 90% | 30 |
| September 2025 | 100% | 30 |
| October 2025 | 100% | 31 |
| November 2025 | 97% | 29 |
| December 2025 | 87% | 30 |
| January 2026 | 89% | 28 |
| February 2026 | 89% | 26 |
| March 2026 | 87% | 31 |
| April 2026 | 77% | 30 |
| May 2026 | 84% | 31 |
- Departures on time
- 84%
- Diverted
- 0.3%
- Flights flown
- 356
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 363 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.