Best Time to Fly SAT to DTW: On-Time Stats by Hour & Airline
San Antonio International → Detroit Metro Wayne County
Data through July 2026 · Last updated October 18, 2026
944 flights were scheduled from San Antonio (SAT) to Detroit (DTW) in the last 12 months, and 90.6% of those that flew arrived on time, 13.0 points above the US average of 77.6%.
Delta Air Lines was the only reporting airline with regular flights on this route.
June has been the best month (93% on time) and Sunday the weakest day of the week (85%).
0.7% of flights were cancelled, versus 1.8% nationally.
SAT to DTW 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 | 90.6% | 69 min | 0.8% | 934 |
| Spirit Airlines | Limited data | 10 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SAT to DTW
On-time arrival % by scheduled departure hour (local time), 1,880 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.0% | 0.8% | 723 |
| 7am–8am | Limited data | 1 | |
| 8am–9am | Limited data | 7 | |
| 9am–10am | Limited data | 10 | |
| 11am–12pm | 89.3% | 1.0% | 294 |
| 12pm–1pm | 88.3% | 0.0% | 78 |
| 1pm–2pm | 89.8% | 0.0% | 49 |
| 2pm–3pm | Limited data | 17 | |
| 3pm–4pm | 87.1% | 0.0% | 62 |
| 4pm–5pm | 82.5% | 0.3% | 638 |
| 5pm–6pm | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SAT to DTW
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) | 88.9% | -0.4 pts | 0.0% | 36 |
| Christmas & New Year (Dec 20 - Jan 3) | 86.5% | -2.8 pts | 0.0% | 75 |
| Summer peak (Jun 15 - Aug 15) | 89.1% | -0.2 pts | 1.7% | 358 |
| All other days | 89.3% | — | 0.3% | 1,411 |
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).