Chicago Midway International in March 2026

60.0%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 March 2026, reporting carriers scheduled 6,508 domestic departures from Chicago Midway International (MDW). 60.0% left less than 15 minutes late and 65.9% reached their destination on time; 3.9% were cancelled.

Nationally that month, 72.8% of flights departed on time and 73.2% arrived on time, so MDW departures were 12.8 points below the national departure figure.

A year earlier, in March 2025, the airport had 6,106 departures with 78.3% leaving on time: a change of −18.3 points, with flights up 7%.

Flights arriving at MDW that month were on time 66.6% of the time (6,513 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 46%, air carrier 29% and national aviation system 18%.

On time 65.9%
Arrived 15+ minutes late 30.0%
Cancelled 3.9%
Diverted 0.2%

Every scheduled departure from MDW in March 2026, judged by arrival at the destination.

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

Measure	Mar 2026	Mar 2025	MDW, 12 months to Jul 2026	All reported flights, Mar 2026
Departed on time	60.0%	78.3%	70.7%	72.8%
Arrived on time	65.9%	80.6%	73.9%	73.2%
Cancelled	3.9%	0.9%	1.5%	2.9%
Average departure delay (late minutes only)	24.3 min	13.7 min	16.5 min	20.3 min
Scheduled departures a day	217	204	202	20,403
Scheduled departures	6,508	6,106	73,744	612,102

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	6,092	94%	65.6%	14.8 min	3.9%
F9 Frontier Airlines	184	3%	66.3%	12.6 min	3.3%
DL Delta Air Lines	120	2%	80.8%	5.1 min	5.0%
OO SkyWest Airlines	92	1%	66.3%	14.1 min	3.3%
G4 Allegiant Air	20	0%	45.0%	116.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MDW–ATL	Chicago to Atlanta	289	72.0%	11.6 min	4.2%
MDW–MCO	Chicago to Orlando	286	66.4%	15.1 min	3.8%
MDW–PHX	Chicago to Phoenix	283	74.2%	5.6 min	3.5%
MDW–MSP	Chicago to Minneapolis	225	64.9%	18.2 min	5.8%
MDW–LGA	Chicago to New York	197	44.7%	31.6 min	11.7%
MDW–LAS	Chicago to Las Vegas	196	62.2%	12.8 min	2.6%
MDW–TPA	Chicago to Tampa	182	68.1%	14.8 min	3.3%
MDW–DCA	Chicago to Washington	181	59.1%	22.0 min	3.3%
MDW–MCI	Chicago to Kansas City	174	71.3%	11.2 min	4.0%
MDW–DAL	Chicago to Dallas	171	79.5%	5.9 min	1.8%
MDW–DEN	Chicago to Denver	169	64.5%	19.4 min	3.0%
MDW–BNA	Chicago to Nashville	164	76.8%	10.2 min	2.4%

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), March 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2026	Minutes
Air carrier	29.0%	33.5%	37,774
Late-arriving aircraft	45.8%	39.3%	59,686
National Aviation System	18.2%	21.0%	23,784
Extreme weather	6.1%	5.9%	7,991
Security	0.9%	0.2%	1,189

130,424 delay minutes on 1,955 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 March 2026?

60.0% of 6,508 scheduled domestic departures left less than 15 minutes late, and 65.9% reached their destination on time. The national figures that month were 72.8% and 73.2%.

How does that compare with a year earlier?

In March 2025, 78.3% of 6,106 departures left on time and 0.9% were cancelled, against 60.0% and 3.9% in March 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for March 2026; 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.