Best Time to Fly SAN to MCI: On-Time Stats by Hour & Airline
San Diego International → Kansas City International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 71.0% of San Diego (SAN) to Kansas City (MCI) flights arrived on time (385 scheduled flights). That is 6.6 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Saturday was the most reliable day (88% on time) and June the worst month (56%).
The cancellation rate was 0.8% (US average 1.8%).
SAN to MCI 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 | 71.0% | 50 min | 0.8% | 385 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SAN to MCI
On-time arrival % by scheduled departure hour (local time), 798 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 93.8% | 0.0% | 48 |
| 7am–8am | 87.2% | 0.0% | 39 |
| 8am–9am | 86.4% | 0.0% | 44 |
| 9am–10am | 82.9% | 2.8% | 72 |
| 10am–11am | 78.4% | 0.0% | 74 |
| 11am–12pm | 89.1% | 0.0% | 46 |
| 12pm–1pm | 70.8% | 0.0% | 96 |
| 1pm–2pm | 78.1% | 0.0% | 64 |
| 2pm–3pm | 59.5% | 0.6% | 165 |
| 3pm–4pm | Limited data | 30 | |
| 4pm–5pm | 65.8% | 0.0% | 41 |
| 5pm–6pm | Limited data | 13 | |
| 6pm–7pm | 70.3% | 0.0% | 38 |
| 7pm–8pm | Limited data | 28 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SAN to MCI
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 | 18 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 69.7% | -9.8 pts | 5.7% | 35 |
| Summer peak (Jun 15 - Aug 15) | 59.2% | -20.4 pts | 0.0% | 147 |
| All other days | 79.5% | — | 0.8% | 598 |
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).