William P Hobby in March 2026

61.8%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 March 2026, reporting carriers scheduled 4,578 domestic departures from William P Hobby (HOU). 61.8% left less than 15 minutes late and 66.3% reached their destination on time; 1.4% were cancelled.

Nationally that month, 72.8% of flights departed on time and 73.2% arrived on time, so HOU departures were 11.0 points below the national departure figure.

A year earlier, in March 2025, the airport had 4,694 departures with 79.7% leaving on time: a change of −17.9 points, with flights down 2%.

Flights arriving at HOU that month were on time 69.0% of the time (4,579 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 48%, air carrier 29% and national aviation system 19%.

On time 66.3%
Arrived 15+ minutes late 32.0%
Cancelled 1.4%
Diverted 0.4%

Every scheduled departure from HOU 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	HOU, 12 months to Jul 2026	All reported flights, Mar 2026
Departed on time	61.8%	79.7%	72.7%	72.8%
Arrived on time	66.3%	81.6%	76.0%	73.2%
Cancelled	1.4%	0.8%	0.9%	2.9%
Average departure delay (late minutes only)	20.7 min	11.6 min	15.0 min	20.3 min
Scheduled departures a day	153	157	148	20,403
Scheduled departures	4,578	4,694	53,894	612,102

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	4,304	94%	65.7%	13.6 min	1.1%
DL Delta Air Lines	120	3%	76.7%	4.0 min	5.0%
OH PSA Airlines	114	2%	67.5%	16.8 min	10.5%
MQ Envoy Air	31	1%	87.1%	-1.2 min	3.2%
G4 Allegiant Air	9	0%	88.9%	5.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
HOU–DAL	Houston to Dallas	364	75.3%	8.6 min	0.8%
HOU–ATL	Houston to Atlanta	239	64.9%	14.1 min	3.3%
HOU–MSY	Houston to New Orleans	200	70.0%	8.7 min	1.5%
HOU–DEN	Houston to Denver	197	72.1%	11.4 min	0.5%
HOU–PHX	Houston to Phoenix	196	82.1%	-1.4 min	0.0%
HOU–MCO	Houston to Orlando	183	57.9%	19.5 min	3.3%
HOU–LAS	Houston to Las Vegas	174	79.9%	-0.8 min	0.0%
HOU–BNA	Houston to Nashville	165	70.3%	12.9 min	1.2%
HOU–MDW	Houston to Chicago	161	57.8%	21.5 min	1.2%
HOU–DFW	Houston to Dallas/Fort Worth	145	71.7%	12.7 min	9.0%
HOU–STL	Houston to St. Louis	143	67.8%	16.5 min	0.0%
HOU–BWI	Houston to Baltimore	122	55.7%	22.3 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), March 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2026	Minutes
Air carrier	28.9%	33.5%	22,906
Late-arriving aircraft	48.2%	39.3%	38,218
National Aviation System	19.1%	21.0%	15,132
Extreme weather	2.0%	5.9%	1,612
Security	1.8%	0.2%	1,423

79,291 delay minutes on 1,463 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 HOU on time in March 2026?

61.8% of 4,578 scheduled domestic departures left less than 15 minutes late, and 66.3% 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, 79.7% of 4,694 departures left on time and 0.8% were cancelled, against 61.8% and 1.4% 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 HOU · methodology · corrections.