Flight Reliability
DL 2117 · Delta Air Lines
Detroit → Salt Lake City (DTW–SLC)
69
Usually Fine
WanderNerd Reliability Score
- 65%
- Arrive within 15 minutes
- 18 min
- Average arrival delay
- 0%
- Cancelled
- 3 min
- Median arrival delay
Based on 363 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
DL 2117 arrived on time 79% of the time on Tuesdays and just 60% on Fridays. That gap is worth planning around.
Well behind the DTW–SLC route.
DL 2117 arrived on time 65% of the time, versus 81% across the DTW–SLC route.
Well behind the Delta Air Lines network.
DL 2117 arrived on time 65% of the time, versus 81% across the Delta Air Lines network.
It basically never cancels.
Out of 363 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon60%(52 flights)
- Tue79%(52 flights)
- Wed64%(52 flights)
- Thu71%(51 flights)
- Fri60%(52 flights)
- Sat63%(51 flights)
- Sun60%(53 flights)
- 6–9 PM65%(355 flights)
- 9 PM–12 AM—(8 flights)
68%
May
Jun 70% → May 68% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 70% | 30 |
| July 2025 | 67% | 30 |
| August 2025 | 65% | 31 |
| September 2025 | 87% | 30 |
| October 2025 | 90% | 31 |
| November 2025 | 83% | 29 |
| December 2025 | 45% | 31 |
| January 2026 | 45% | 31 |
| February 2026 | 68% | 28 |
| March 2026 | 32% | 31 |
| April 2026 | 63% | 30 |
| May 2026 | 68% | 31 |
- Departures on time
- 66%
- Diverted
- 0%
- Flights flown
- 363
- 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.