Kansas City International in May 2025

79.8%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 2025, reporting carriers scheduled 4,363 domestic departures from Kansas City International (MCI). 79.8% left less than 15 minutes late and 79.0% reached their destination on time; 0.7% were cancelled.

Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so MCI departures were 3.1 points above the national departure figure.

A year earlier, in May 2024, the airport had 4,346 departures with 76.4% leaving on time: a change of +3.4 points, with flights up 0%.

Flights arriving at MCI that month were on time 75.4% of the time (4,361 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, national aviation system 27% and air carrier 26%.

On time 79.0%
Arrived 15+ minutes late 20.0%
Cancelled 0.7%
Diverted 0.3%

Every scheduled departure from MCI in May 2025, judged by arrival at the destination.

May 2025 against a year earlier, the airport's year and the nation

Measure	May 2025	May 2024	MCI, 12 months to Jul 2026	All reported flights, May 2025
Departed on time	79.8%	76.4%	77.8%	76.7%
Arrived on time	79.0%	75.2%	78.7%	75.4%
Cancelled	0.7%	1.3%	1.5%	1.0%
Average departure delay (late minutes only)	14.8 min	18.5 min	15.7 min	17.5 min
Scheduled departures a day	145	145	135	20,188
Scheduled departures	4,363	4,346	49,298	605,648

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	2,077	48%	77.5%	8.1 min	0.4%
DL Delta Air Lines	729	17%	85.0%	1.5 min	0.3%
AA American Airlines	451	10%	74.3%	13.6 min	1.3%
UA United Airlines	319	7%	79.3%	9.4 min	0.9%
OO SkyWest Airlines	170	4%	85.9%	10.3 min	0.6%
YX Republic Airline	170	4%	81.8%	-0.1 min	0.6%
NK Spirit Airlines	134	3%	79.9%	3.5 min	0.7%
MQ Envoy Air	98	2%	84.7%	3.2 min	2.0%
OH PSA Airlines	90	2%	71.1%	8.6 min	6.7%
AS Alaska Airlines	74	2%	81.1%	1.8 min	1.4%
G4 Allegiant Air	32	1%	68.8%	15.9 min	0.0%
F9 Frontier Airlines	19	0%	47.4%	38.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MCI–DEN	Kansas City to Denver	365	67.4%	19.0 min	0.5%
MCI–ORD	Kansas City to Chicago	358	85.5%	3.0 min	0.6%
MCI–ATL	Kansas City to Atlanta	275	84.0%	4.4 min	0.0%
MCI–DFW	Kansas City to Dallas/Fort Worth	215	70.7%	20.6 min	2.8%
MCI–PHX	Kansas City to Phoenix	211	81.0%	6.1 min	0.0%
MCI–MDW	Kansas City to Chicago	182	83.5%	5.4 min	0.0%
MCI–DAL	Kansas City to Dallas	179	75.4%	11.2 min	2.2%
MCI–LAS	Kansas City to Las Vegas	176	84.1%	0.6 min	1.1%
MCI–DCA	Kansas City to Washington	171	69.6%	13.4 min	1.8%
MCI–MCO	Kansas City to Orlando	155	80.0%	3.3 min	0.0%
MCI–LGA	Kansas City to New York	143	76.9%	16.8 min	0.7%
MCI–BNA	Kansas City to Nashville	126	84.1%	4.0 min	1.6%

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 2025.

Delay causes

BTS cause category	Share of delay minutes	National, May 2025	Minutes
Air carrier	26.4%	29.3%	15,719
Late-arriving aircraft	40.3%	37.8%	24,019
National Aviation System	27.1%	25.9%	16,137
Extreme weather	6.2%	6.9%	3,715
Security	0.0%	0.1%	28

59,618 delay minutes on 873 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 2025?

79.8% of 4,363 scheduled domestic departures left less than 15 minutes late, and 79.0% reached their destination on time. The national figures that month were 76.7% and 75.4%.

How does that compare with a year earlier?

In May 2024, 76.4% of 4,346 departures left on time and 1.3% were cancelled, against 79.8% and 0.7% in May 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2025; 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.