Historical on-time performance
Boston to Kansas City
1,256 miData through Dec 2025Source: US DOT · BTS
Flights on BOS–MCI arrive on time 79% of the time over the last 12 months.
On-time rate79%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled2.0%of scheduled flights
based on 489 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysbestOn-time81%Medianon timep9030 minCancel1.7%Flights351
- Delta Air LinesOn-time72%Medianon timep9065 minCancel2.9%Flights138
Why flights run late
Delay causes
- Airline27%
- Weather3%
- Air traffic (NAS)22%
- Late aircraft48%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly BOS → MCI
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 84% on time.
- Mornings84% on time · p90 30 min · 1,173 flights
- Middays76% on time · p90 30 min · 146 flights · limited
- Overnights76% on time · p90 35 min · 94 flights · limited
- Evenings71% on time · p90 60 min · 234 flights
- Afternoons68% on time · p90 70 min · 468 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 81% on time.
- Tuesdays81% on time · p90 30 min · 315 flights
- Thursdays79% on time · p90 40 min · 315 flights
- Wednesdays78% on time · p90 40 min · 311 flights
- Sundays78% on time · p90 40 min · 313 flights
- Saturdays78% on time · p90 35 min · 230 flights
- Mondays77% on time · p90 45 min · 319 flights
- Fridays76% on time · p90 70 min · 312 flights
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