Best Time to Fly BOS to MCI: On-Time Stats by Hour & Airline
Logan International → Kansas City International
Data through July 2026 · Last updated October 18, 2026
646 flights were scheduled from Boston (BOS) to Kansas City (MCI) in the last 12 months, and 78.3% of those that flew arrived on time, 0.7 points above the US average of 77.6%.
Republic Airways was the most punctual of the 3 airlines on the route at 84.4%, while Southwest Airlines trailed at 54.4%.
September has been the best month (88% on time) and Sunday the weakest day of the week (78%).
2.3% of flights were cancelled, versus 1.8% nationally.
BOS 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 |
|---|---|---|---|---|
| Republic Airways | 84.4% | 50 min | 2.9% | 278 |
| Delta Air Lines | 77.4% | 75 min | 2.2% | 311 |
| Southwest Airlines | 54.4% | 48 min | 0.0% | 57 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BOS to MCI
On-time arrival % by scheduled departure hour (local time), 1,329 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 90.5% | 1.0% | 482 |
| 7am–8am | 91.1% | 2.2% | 92 |
| 8am–9am | 90.6% | 0.0% | 32 |
| 9am–10am | Limited data | 21 | |
| 10am–11am | 75.2% | 4.3% | 115 |
| 11am–12pm | Limited data | 19 | |
| 12pm–1pm | Limited data | 15 | |
| 1pm–2pm | Limited data | 1 | |
| 2pm–3pm | 60.5% | 1.1% | 87 |
| 3pm–4pm | 61.2% | 3.6% | 84 |
| 4pm–5pm | 74.9% | 2.6% | 379 |
| 5pm–6pm | Limited data | 2 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BOS 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 | 23 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 84.0% | +1.4 pts | 1.9% | 52 |
| Summer peak (Jun 15 - Aug 15) | 74.2% | -8.4 pts | 3.2% | 284 |
| All other days | 82.6% | — | 1.9% | 970 |
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).