Best Time to Fly MCI to SFO: On-Time Stats by Hour & Airline
Kansas City International → San Francisco International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 72.2% of Kansas City (MCI) to San Francisco (SFO) flights arrived on time (365 scheduled flights). That is 5.4 points below the national average of 77.6%.
SkyWest Airlines was the most punctual of the 2 airlines on the route at 81.5%, while United Airlines trailed at 62.5%.
April has been the best month (93% on time) and Monday the weakest day of the week (70%).
0.8% of flights were cancelled, versus 1.8% nationally.
MCI to SFO 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 |
|---|---|---|---|---|
| SkyWest Airlines | 81.5% | 78 min | 1.1% | 187 |
| United Airlines | 62.5% | 84 min | 0.6% | 178 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MCI to SFO
On-time arrival % by scheduled departure hour (local time), 814 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 18 | |
| 7am–8am | 86.2% | 1.6% | 191 |
| 8am–9am | 97.4% | 0.0% | 38 |
| 3pm–4pm | 80.4% | 2.2% | 225 |
| 4pm–5pm | 96.8% | 0.0% | 31 |
| 5pm–6pm | 87.8% | 0.0% | 98 |
| 6pm–7pm | 80.0% | 0.0% | 120 |
| 7pm–8pm | 35.2% | 1.1% | 93 |
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 SFO
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 | 20 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 70.7% | -12.2 pts | 2.3% | 43 |
| Summer peak (Jun 15 - Aug 15) | 65.0% | -17.9 pts | 2.4% | 124 |
| All other days | 82.9% | — | 1.1% | 627 |
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).