Flight Reliability
DL 1723 · Delta Air Lines
Salt Lake City → Missoula (SLC–MSO)
82
Pretty Reliable
WanderNerd Reliability Score
- 78%
- Arrive within 15 minutes
- 16 min
- Average arrival delay
- 0.3%
- Cancelled
- 7 min early
- Median arrival delay
Based on 344 historical flights. Data through May 2026.
What the data says
Wednesdays have been rough.
DL 1723 arrived on time 90% of the time on Fridays and just 59% on Wednesdays. That gap is worth planning around.
Lagging the SLC–MSO route.
DL 1723 arrived on time 78% of the time, versus 88% across the SLC–MSO route.
A bit behind the Delta Air Lines network.
DL 1723 arrived on time 78% of the time, versus 81% across the Delta Air Lines network.
It basically never cancels.
Out of 344 scheduled flights, only 0.3% were cancelled.
The breakdown
- Mon70%(50 flights)
- Tue76%(49 flights)
- Wed59%(49 flights)
- Thu84%(49 flights)
- Fri90%(49 flights)
- Sat85%(47 flights)
- Sun82%(50 flights)
- 3–6 PM—(2 flights)
- 9 PM–12 AM78%(341 flights)
97%
May
Jun 40% → May 97% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 40% | 30 |
| July 2025 | 74% | 31 |
| August 2025 | 84% | 31 |
| September 2025 | 72% | 25 |
| October 2025 | 90% | 31 |
| November 2025 | 87% | 30 |
| December 2025 | 84% | 19 |
| January 2026 | 78% | 27 |
| February 2026 | 82% | 28 |
| March 2026 | 70% | 30 |
| April 2026 | 77% | 30 |
| May 2026 | 97% | 31 |
- Departures on time
- 78%
- Diverted
- 0%
- Flights flown
- 343
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 344 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.