BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
MCI→BOS

Kansas City, MO (MCI) to Boston, MA (BOS) flight delay odds

72.5% of 615 official scheduled MCI-to-BOS flights arrived on time; 19.2% arrived at least 30 minutes late and 2.6% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALVariable
72.5%arrived on time
19.2%30+ min late
2.6%cancelled
615scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late12.5%all scheduled flights
120+ minutes late5.9%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+14.5 mincompleted flights

Which departure time was most reliable for MCI to BOS?

Among qualifying MCI-to-BOS departure window results, Late morning had the highest on-time rate: 79.8% of 253 flights. Evening was lowest at 65.9% across 246 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning25379.8%15.0%0.8%
Afternoon11670.7%20.7%6.0%
Evening24665.9%22.8%2.8%

Which weekday was most reliable for MCI to BOS?

Among qualifying MCI-to-BOS weekday results, Wednesday had the highest on-time rate: 80.0% of 90 flights. Sunday was lowest at 65.6% across 93 flights.

DayFlightsOn time30+ minCancelled
Monday9671.9%20.8%4.2%
Tuesday9479.8%14.9%1.1%
Wednesday9080.0%12.2%2.2%
Thursday9268.5%22.8%3.3%
Friday9171.4%23.1%0.0%
Saturday5969.5%13.6%6.8%
Sunday9365.6%24.7%2.2%

Which airline was most reliable for MCI to BOS?

Among qualifying MCI-to-BOS airline results, Republic Airways had the highest on-time rate: 79.0% of 334 flights. Delta Air Lines was lowest at 65.7% across 254 flights.

AirlineFlightsOn time30+ minCancelled
Republic Airways33479.0%12.0%3.3%
Delta Air Lines25465.7%26.4%2.0%
Southwest Airlines2755.6%40.7%0.0%

Which month was most reliable for MCI to BOS?

Among qualifying MCI-to-BOS month results, May 2026 had the highest on-time rate: 91.2% of 57 flights. September 2025 was lowest at 49.1% across 55 flights.

MonthFlightsOn time30+ minCancelled
July 20255673.2%17.9%1.8%
August 20255683.9%7.1%1.8%
September 20255549.1%38.2%1.8%
October 20255750.9%31.6%5.3%
November 20255366.0%22.6%3.8%
December 20254173.2%22.0%2.4%
January 20263366.7%18.2%9.1%
February 20262885.7%3.6%10.7%
March 20265284.6%7.7%1.9%
April 20265180.4%15.7%0.0%
May 20265791.2%7.0%0.0%
June 20267671.1%27.6%0.0%

What drove MCI to BOS delay minutes?

Airline was the largest recorded MCI-to-BOS delay category, accounting for 45.9% of 15,659 BTS-attributed delay minutes during July 2025–June 2026.

Airline45.9%
Late aircraft33.8%
National airspace17.4%
Weather2.9%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.