BOS to MCI flight delays & on-time performance
Nonstop flights from Boston Logan International Airport to Kansas City International Airport · 1,256 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BOS or MCI right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Boston (BOS) to Kansas City (MCI) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 2.3% were cancelled, and 9% arrived an hour or more late.
- Republic Airways was the most punctual airline here (84% on time); Southwest Airlines was the least (54%).
- Departures scheduled around 6am did best (89% on time); around 2pm did worst (56%).
- Monday was the most reliable day to fly (84% on time) and Friday the least (74%).
- The largest source of delay minutes was late-arriving aircraft (45%).
Which airline is most on time from BOS to MCI?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 84% | 2.9% | 9 min | 5.6% | 278 |
| Delta Air Lines | 77% | 2.3% | 18 min | 11.0% | 311 |
| Southwest Airlines | 54% | 0.0% | 23 min | 10.5% | 57 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am89%229 flights
- 7am77%26 flights
- 8am92%13 flights
- 9am92%14 flights
- 10am82%53 flights
- 11am72%18 flights
- 2pm56%64 flights
- 3pm61%80 flights
- 4pm78%146 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday84%5.0% cancelled
- Tuesday79%2.1% cancelled
- Wednesday78%3.2% cancelled
- Thursday76%2.0% cancelled
- Friday74%0.0% cancelled
- Saturday80%3.2% cancelled
- Sunday78%1.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft45%
- Airline (crew, maintenance, cleaning, fueling)30%
- Air traffic control & airport congestion24%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)60%
- Extreme weather20%
- Air traffic control & airport congestion20%
- Security0%
BOS to MCI: common questions
- How often are BOS to MCI flights on time?
- 78% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Boston to Kansas City cancelled?
- 2.3% of scheduled flights were cancelled (15 of 646).
- How long are typical delays?
- Across all flights the average arrival delay was 14 min (early arrivals count as zero). Flights that were late arrived 62 min behind schedule on average, and 8.6% of flights were an hour or more late.
- How long is taxi time at BOS?
- Flights on this route spent 22 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MCI to BOS — 73% on time
More flights from Boston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BOS → MCI, nonstop flights by US airlines that report to the DOT. How we calculate this.