Best Time to Fly DTW to SLC: On-Time Stats by Hour & Airline
Detroit Metro Wayne County → Salt Lake City International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 79.8% of Detroit (DTW) to Salt Lake City (SLC) flights arrived on time (1,558 scheduled flights). That is 2.1 points above the national average of 77.6%.
Delta Air Lines was the only reporting airline with regular flights on this route.
September has been the best month (94% on time) and Sunday the weakest day of the week (80%).
0.1% of flights were cancelled, versus 1.8% nationally.
DTW to SLC on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Lines | 79.6% | 59 min | 0.1% | 1,543 |
| Spirit Airlines | Limited data | 15 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DTW to SLC
On-time arrival % by scheduled departure hour (local time), 3,102 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 23 | |
| 7am–8am | 91.4% | 0.0% | 116 |
| 8am–9am | 92.1% | 0.3% | 738 |
| 9am–10am | Limited data | 26 | |
| 10am–11am | Limited data | 3 | |
| 12pm–1pm | 88.9% | 0.0% | 730 |
| 3pm–4pm | Limited data | 1 | |
| 4pm–5pm | 74.2% | 0.0% | 31 |
| 5pm–6pm | 76.1% | 0.2% | 593 |
| 6pm–7pm | 78.5% | 0.0% | 121 |
| 7pm–8pm | 48.7% | 0.0% | 39 |
| 8pm–9pm | 70.2% | 0.0% | 671 |
| 9pm–10pm | Limited data | 10 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DTW to SLC
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 76.9% | -7.5 pts | 0.0% | 52 |
| Christmas & New Year (Dec 20 - Jan 3) | 62.5% | -22.0 pts | 0.0% | 120 |
| Summer peak (Jun 15 - Aug 15) | 78.7% | -5.7 pts | 0.2% | 631 |
| All other days | 84.5% | — | 0.1% | 2,299 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).