Best Time to Fly MCI to SAT: On-Time Stats by Hour & Airline
Kansas City International → San Antonio International
Data through July 2026 · Last updated October 18, 2026
270 flights were scheduled from Kansas City (MCI) to San Antonio (SAT) in the last 12 months, and 79.6% of those that flew arrived on time, 2.0 points above the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (89% on time) and June the worst month (54%).
The cancellation rate was 0.0% (US average 1.8%).
MCI to SAT 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 |
|---|---|---|---|---|
| Southwest Airlines | 79.6% | 50 min | 0.0% | 270 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MCI to SAT
On-time arrival % by scheduled departure hour (local time), 547 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 7 | |
| 7am–8am | Limited data | 1 | |
| 8am–9am | Limited data | 8 | |
| 9am–10am | Limited data | 9 | |
| 10am–11am | Limited data | 1 | |
| 11am–12pm | Limited data | 24 | |
| 12pm–1pm | 96.7% | 0.0% | 30 |
| 1pm–2pm | 86.6% | 0.0% | 67 |
| 2pm–3pm | 75.9% | 0.4% | 233 |
| 3pm–4pm | 74.1% | 1.2% | 82 |
| 4pm–5pm | Limited data | 22 | |
| 5pm–6pm | 45.6% | 2.1% | 47 |
| 6pm–7pm | Limited data | 7 | |
| 7pm–8pm | Limited data | 1 | |
| 8pm–9pm | Limited data | 7 | |
| 9pm–10pm | 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 MCI to SAT
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) | Limited data | 12 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 22 | ||
| Summer peak (Jun 15 - Aug 15) | 67.5% | -11.3 pts | 0.9% | 115 |
| All other days | 78.8% | — | 0.2% | 398 |
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).