Delta Air Lines MCI to BOS on-time performance
Delta Air Lines nonstop flights from Kansas City to Boston · Aug 2025 – Jul 2026
On-time arrivals
69%
arrived < 15 min late
Cancelled
2.6%
8 flights
Avg arrival delay
35 min
111 min when late
Rank on route
#2 of 3
route average 73% on time
Key facts
- Delta Air Lines flights on MCI to BOS arrived on time 69% of the time in Aug 2025 – Jul 2026.
- 2.6% were cancelled, and 17% arrived an hour or more late.
- That ranks #2 of 3 airlines on this route, which averaged 73% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (42%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)42%
- Late-arriving aircraft38%
- Air traffic control & airport congestion16%
- Extreme weather4%
- Security0%
Other airlines on MCI to BOS
- Republic Airways83% on time · 16 min avg delay
- Southwest Airlines46% on time · 34 min avg delay
Full MCI to BOS comparison →
Delta Air Lines on-time record across all routes →
311 Delta Air Lines flights tracked on this route; 8 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.