Chicago Midway International in October 2023

76.9%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 October 2023, reporting carriers scheduled 7,653 domestic departures from Chicago Midway International (MDW). 76.9% left less than 15 minutes late and 79.4% reached their destination on time; 0.1% were cancelled.

Nationally that month, 83.8% of flights departed on time and 84.0% arrived on time, so MDW departures were 6.9 points below the national departure figure.

Flights arriving at MDW that month were on time 83.0% of the time (7,654 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 43%, late-arriving aircraft 42% and national aviation system 15%.

On time 79.4%
Arrived 15+ minutes late 20.4%
Cancelled 0.1%
Diverted 0.1%

Every scheduled departure from MDW in October 2023, judged by arrival at the destination.

October 2023 against a year earlier, the airport's year and the nation

Measure	Oct 2023	Year earlier	MDW, 12 months to Jul 2026	All reported flights, Oct 2023
Departed on time	76.9%	—	70.7%	83.8%
Arrived on time	79.4%	—	73.9%	84.0%
Cancelled	0.1%	—	1.5%	0.4%
Average departure delay (late minutes only)	12.2 min	—	16.5 min	11.0 min
Scheduled departures a day	255	—	202	19,966
Scheduled departures	7,653	—	73,744	598,968

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	6,861	90%	79.4%	4.3 min	0.0%
F9 Frontier Airlines	459	6%	71.7%	12.5 min	0.7%
OO SkyWest Airlines	172	2%	93.0%	8.8 min	0.0%
DL Delta Air Lines	117	2%	91.5%	-5.7 min	0.0%
G4 Allegiant Air	44	1%	77.3%	1.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MDW–ATL	Chicago to Atlanta	355	84.5%	2.4 min	0.0%
MDW–DEN	Chicago to Denver	305	82.3%	1.7 min	0.0%
MDW–LAS	Chicago to Las Vegas	295	72.5%	6.4 min	0.3%
MDW–MSP	Chicago to Minneapolis	295	84.7%	7.5 min	0.0%
MDW–PHX	Chicago to Phoenix	286	75.5%	7.3 min	0.0%
MDW–MCO	Chicago to Orlando	258	78.7%	8.9 min	0.0%
MDW–LGA	Chicago to New York	223	83.9%	1.4 min	0.0%
MDW–MCI	Chicago to Kansas City	219	80.8%	4.6 min	0.0%
MDW–STL	Chicago to St. Louis	215	84.7%	3.7 min	0.0%
MDW–DTW	Chicago to Detroit	214	83.2%	3.9 min	0.0%
MDW–DAL	Chicago to Dallas	209	81.8%	3.0 min	0.0%
MDW–BNA	Chicago to Nashville	196	78.1%	5.4 min	0.0%

By scheduled departure hour

100

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

Share of departures that left less than 15 minutes late, by scheduled hour (local time), October 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Oct 2023	Minutes
Air carrier	43.3%	41.3%	31,388
Late-arriving aircraft	41.5%	40.5%	30,040
National Aviation System	14.8%	14.4%	10,686
Extreme weather	0.4%	3.7%	282
Security	0.1%	0.2%	48

72,444 delay minutes on 1,564 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 October 2023?

76.9% of 7,653 scheduled domestic departures left less than 15 minutes late, and 79.4% reached their destination on time. The national figures that month were 83.8% and 84.0%.

How does that compare with a year earlier?

October 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for October 2023; 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.