Chicago Midway International in August 2024

73.5%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 August 2024, reporting carriers scheduled 7,199 domestic departures from Chicago Midway International (MDW). 73.5% left less than 15 minutes late and 75.2% reached their destination on time; 0.8% were cancelled.

Nationally that month, 75.4% of flights departed on time and 74.7% arrived on time, so MDW departures were 1.9 points below the national departure figure.

A year earlier, in August 2023, the airport had 7,890 departures with 68.9% leaving on time: a change of +4.6 points, with flights down 9%.

Flights arriving at MDW that month were on time 79.8% of the time (7,201 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 38%, air carrier 32% and national aviation system 23%.

On time 75.2%
Arrived 15+ minutes late 23.8%
Cancelled 0.8%
Diverted 0.2%

Every scheduled departure from MDW in August 2024, judged by arrival at the destination.

August 2024 against a year earlier, the airport's year and the nation

Measure	Aug 2024	Aug 2023	MDW, 12 months to Jul 2026	All reported flights, Aug 2024
Departed on time	73.5%	68.9%	70.7%	75.4%
Arrived on time	75.2%	71.2%	73.9%	74.7%
Cancelled	0.8%	1.2%	1.5%	2.1%
Average departure delay (late minutes only)	15.1 min	16.4 min	16.5 min	18.4 min
Scheduled departures a day	240	263	202	20,634
Scheduled departures	7,199	7,890	73,744	619,025

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	6,507	90%	75.3%	7.5 min	0.7%
F9 Frontier Airlines	337	5%	68.0%	9.5 min	3.9%
OO SkyWest Airlines	170	2%	78.2%	13.7 min	0.0%
DL Delta Air Lines	146	2%	88.4%	-7.4 min	0.0%
G4 Allegiant Air	39	1%	61.5%	28.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MDW–ATL	Chicago to Atlanta	348	83.9%	-1.7 min	0.0%
MDW–DEN	Chicago to Denver	284	76.4%	5.0 min	0.7%
MDW–LAS	Chicago to Las Vegas	258	76.7%	5.0 min	0.4%
MDW–MSP	Chicago to Minneapolis	256	69.9%	13.5 min	0.0%
MDW–PHX	Chicago to Phoenix	250	78.8%	3.9 min	0.4%
MDW–MCO	Chicago to Orlando	231	70.6%	8.6 min	2.6%
MDW–LGA	Chicago to New York	205	61.5%	14.1 min	6.8%
MDW–DAL	Chicago to Dallas	199	77.9%	3.0 min	0.0%
MDW–MCI	Chicago to Kansas City	198	79.8%	4.1 min	0.5%
MDW–DTW	Chicago to Detroit	184	78.8%	3.3 min	0.0%
MDW–BWI	Chicago to Baltimore	183	71.0%	11.6 min	2.2%
MDW–DCA	Chicago to Washington	181	77.9%	6.4 min	0.6%

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), August 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2024	Minutes
Air carrier	31.8%	33.8%	30,103
Late-arriving aircraft	38.2%	39.8%	36,106
National Aviation System	22.9%	20.4%	21,649
Extreme weather	6.9%	5.9%	6,570
Security	0.1%	0.1%	114

94,542 delay minutes on 1,710 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 MDW on time in August 2024?

73.5% of 7,199 scheduled domestic departures left less than 15 minutes late, and 75.2% reached their destination on time. The national figures that month were 75.4% and 74.7%.

How does that compare with a year earlier?

In August 2023, 68.9% of 7,890 departures left on time and 1.2% were cancelled, against 73.5% and 0.8% in August 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for MDW · methodology · corrections.