Route
BOS → MCI
Boston Logan International Airport Kansas City International Airport
1,256 miles
Return route MCI → BOS →
How punctual is this route?
- On-time arrivals
- 76.5%
- Less than 15 minutes late
- Cancelled
- 2.6%
- Of scheduled flights
- Average delay when late
- 69 min
- Flights arriving 15+ minutes late
- Flights tracked
- 650
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 43%
- Airline (crew, maintenance, cleaning) 31%
- Air traffic control & airport 25%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 79.2% | 55 |
| October 2025 | 75.9% | 57 |
| November 2025 | 74.5% | 53 |
| December 2025 | 70.0% | 41 |
| January 2026 | 77.4% | 33 |
| February 2026 | 88.5% | 28 |
| March 2026 | 80.4% | 52 |
| April 2026 | 86.0% | 51 |
| May 2026 | 86.0% | 57 |
| June 2026 | 68.0% | 76 |
| July 2026 | 71.4% | 87 |
| August 2026 | 71.9% | 60 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Delta Air Lines | 365 | 76.2% | 2.5% | 80 min |
| Republic Airways | 225 | 82.5% | 3.1% | 56 min |
| Southwest Airlines | 60 | 55.9% | 1.7% | 50 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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