Kansas City International in May 2026

75.8%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In May 2026, reporting carriers scheduled 4,354 domestic departures from Kansas City International (MCI). 75.8% left less than 15 minutes late and 78.3% reached their destination on time; 1.1% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so MCI departures were 1.3 points below the national departure figure.

A year earlier, in May 2025, the airport had 4,363 departures with 79.8% leaving on time: a change of −4.0 points, with flights down 0%.

Flights arriving at MCI that month were on time 74.8% of the time (4,354 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 45%, air carrier 30% and national aviation system 19%.

On time 78.3%
Arrived 15+ minutes late 20.2%
Cancelled 1.1%
Diverted 0.4%

Every scheduled departure from MCI in May 2026, judged by arrival at the destination.

May 2026 against a year earlier, the airport's year and the nation

Measure	May 2026	May 2025	MCI, 12 months to Jul 2026	All reported flights, May 2026
Departed on time	75.8%	79.8%	77.8%	77.1%
Arrived on time	78.3%	79.0%	78.7%	77.6%
Cancelled	1.1%	0.7%	1.5%	0.9%
Average departure delay (late minutes only)	15.8 min	14.8 min	15.7 min	16.0 min
Scheduled departures a day	145	145	135	20,391
Scheduled departures	4,354	4,363	49,298	611,735

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	1,986	46%	73.4%	8.0 min	0.6%
DL Delta Air Lines	710	16%	87.5%	-4.4 min	2.3%
UA United Airlines	406	9%	80.0%	5.7 min	1.0%
AA American Airlines	401	9%	78.6%	2.2 min	1.7%
OO SkyWest Airlines	263	6%	81.0%	14.2 min	0.0%
MQ Envoy Air	166	4%	85.5%	-4.4 min	1.2%
OH PSA Airlines	113	3%	70.8%	17.4 min	3.5%
YX Republic Airline	113	3%	88.5%	-10.2 min	1.8%
AS Alaska Airlines	109	3%	92.7%	-9.3 min	0.0%
F9 Frontier Airlines	49	1%	65.3%	40.7 min	0.0%
G4 Allegiant Air	36	1%	55.6%	12.1 min	2.8%
NK Spirit Airlines	2	0%	50.0%	35.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MCI–ORD	Kansas City to Chicago	413	78.5%	13.6 min	1.2%
MCI–DEN	Kansas City to Denver	381	79.3%	6.7 min	0.5%
MCI–ATL	Kansas City to Atlanta	285	82.8%	1.5 min	1.1%
MCI–DFW	Kansas City to Dallas/Fort Worth	218	71.6%	9.0 min	4.6%
MCI–PHX	Kansas City to Phoenix	204	77.9%	6.8 min	0.5%
MCI–DAL	Kansas City to Dallas	179	74.3%	11.0 min	1.1%
MCI–MDW	Kansas City to Chicago	177	74.0%	9.3 min	0.0%
MCI–LGA	Kansas City to New York	168	77.4%	4.6 min	2.4%
MCI–DCA	Kansas City to Washington	165	64.2%	18.7 min	1.2%
MCI–LAS	Kansas City to Las Vegas	157	73.2%	6.0 min	1.3%
MCI–LAX	Kansas City to Los Angeles	135	78.5%	0.8 min	3.0%
MCI–BNA	Kansas City to Nashville	119	71.4%	10.2 min	0.0%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), May 2026.

Delay causes

BTS cause category	Share of delay minutes	National, May 2026	Minutes
Air carrier	29.7%	33.0%	16,879
Late-arriving aircraft	45.1%	40.4%	25,650
National Aviation System	19.2%	20.5%	10,892
Extreme weather	5.9%	6.0%	3,331
Security	0.2%	0.1%	86

56,838 delay minutes on 881 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left MCI on time in May 2026?

75.8% of 4,354 scheduled domestic departures left less than 15 minutes late, and 78.3% reached their destination on time. The national figures that month were 77.1% and 77.6%.

How does that compare with a year earlier?

In May 2025, 79.8% of 4,363 departures left on time and 0.7% were cancelled, against 75.8% and 1.1% in May 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2026; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for MCI · methodology · corrections.