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

Seattle, WA (SEA) to Kansas City, MO (MCI) flight delay odds

76.6% of 1,131 official scheduled SEA-to-MCI flights arrived on time; 13.2% arrived at least 30 minutes late and 0.9% 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 SIGNALGenerally reliable
76.6%arrived on time
13.2%30+ min late
0.9%cancelled
1,131scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.3%all scheduled flights
120+ minutes late1.7%all scheduled flights
Diverted0.6%did not reach as scheduled
Average arrival+3.8 mincompleted flights

Which departure time was most reliable for SEA to MCI?

Among qualifying SEA-to-MCI departure window results, Early morning had the highest on-time rate: 92.6% of 202 flights. Evening was lowest at 72.2% across 618 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning20292.6%3.0%0.0%
Late morning15874.7%14.6%0.6%
Afternoon15275.0%13.8%0.0%
Evening61872.2%16.0%1.5%

Which weekday was most reliable for SEA to MCI?

Among qualifying SEA-to-MCI weekday results, Wednesday had the highest on-time rate: 81.7% of 153 flights. Friday was lowest at 72.6% across 175 flights.

DayFlightsOn time30+ minCancelled
Monday16678.3%11.4%0.0%
Tuesday15578.7%11.6%0.6%
Wednesday15381.7%10.5%0.0%
Thursday16575.8%12.7%0.6%
Friday17572.6%18.3%1.7%
Saturday14676.7%13.0%2.1%
Sunday17173.1%14.0%1.2%

Which airline was most reliable for SEA to MCI?

Among qualifying SEA-to-MCI airline results, Alaska Airlines had the highest on-time rate: 78.5% of 745 flights. Delta Air Lines was lowest at 74.5% across 364 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines74578.5%11.8%0.5%
Delta Air Lines36474.5%14.8%1.6%
Southwest Airlines2245.5%31.8%0.0%

Which month was most reliable for SEA to MCI?

Among qualifying SEA-to-MCI month results, April 2026 had the highest on-time rate: 92.2% of 90 flights. July 2025 was lowest at 55.9% across 127 flights.

MonthFlightsOn time30+ minCancelled
July 202512755.9%25.2%0.0%
August 202512168.6%19.8%0.8%
September 202511171.2%17.1%0.9%
October 20258873.9%15.9%2.3%
November 20257979.7%12.7%0.0%
December 20258572.9%16.5%2.4%
January 20266783.6%7.5%1.5%
February 20265685.7%8.9%1.8%
March 20267584.0%5.3%1.3%
April 20269092.2%2.2%0.0%
May 202610985.3%4.6%0.9%
June 202612381.3%12.2%0.0%

What drove SEA to MCI delay minutes?

Airline was the largest recorded SEA-to-MCI delay category, accounting for 49.9% of 13,686 BTS-attributed delay minutes during July 2025–June 2026.

Airline49.9%
Late aircraft31.2%
National airspace16.0%
Weather2.8%
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.