Flight Check

Best Airline: MCI to BOS

Kansas City to Boston — airline reliability comparison

Republic Airways is the most reliable airline on the MCI to BOS route with a 83% on-time rate, compared to Southwest Airlines at 46%. Based on 1,167 flights tracked.

This route involves weather-prone airports, which can affect reliability regardless of airline.

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

Republic Airways83%
Delta Air Lines79%
Spirit Airlines75%
JetBlue Airways72%
Southwest Airlines46%

MCI to BOS Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Republic AirwaysYXBest83%2.2%72m1,167
Delta Air LinesDL79%1.2%103m882
Spirit AirlinesNK75%6.7%55m104
JetBlue AirwaysB672%3.2%142m243
Southwest AirlinesWNWorst46%0.0%67m57

Route Overview

79%
Overall On-Time
94m
Avg Delay
2.1%
Cancel Rate
2,499
Total Flights
MCI to BOS Route DetailsReturn: BOS to MCI
MCI AirportBOS Airport

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Data last updated October 2026. Source: Bureau of Transportation Statistics.