William P Hobby in April 2024

76.8%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 April 2024, reporting carriers scheduled 4,857 domestic departures from William P Hobby (HOU). 76.8% left less than 15 minutes late and 80.4% reached their destination on time; 0.5% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.2% arrived on time, so HOU departures were 3.7 points below the national departure figure.

Flights arriving at HOU that month were on time 80.1% of the time (4,857 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 40%, late-arriving aircraft 39% and national aviation system 19%.

On time 80.4%
Arrived 15+ minutes late 19.0%
Cancelled 0.5%
Diverted 0.1%

Every scheduled departure from HOU in April 2024, judged by arrival at the destination.

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

Measure	Apr 2024	Year earlier	HOU, 12 months to Jul 2026	All reported flights, Apr 2024
Departed on time	76.8%	—	72.7%	80.5%
Arrived on time	80.4%	—	76.0%	80.2%
Cancelled	0.5%	—	0.9%	0.7%
Average departure delay (late minutes only)	13.9 min	—	15.0 min	14.2 min
Scheduled departures a day	162	—	148	19,406
Scheduled departures	4,857	—	53,894	582,185

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	4,479	92%	80.4%	1.8 min	0.4%
MQ Envoy Air	176	4%	73.9%	16.7 min	3.4%
DL Delta Air Lines	132	3%	86.4%	15.5 min	0.0%
F9 Frontier Airlines	35	1%	71.4%	27.9 min	2.9%
G4 Allegiant Air	35	1%	91.4%	-7.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
HOU–DAL	Houston to Dallas	349	77.7%	7.1 min	2.9%
HOU–ATL	Houston to Atlanta	291	86.3%	6.0 min	0.0%
HOU–DEN	Houston to Denver	222	80.6%	2.9 min	0.9%
HOU–MSY	Houston to New Orleans	194	82.0%	-1.3 min	1.0%
HOU–DFW	Houston to Dallas/Fort Worth	176	73.9%	16.7 min	3.4%
HOU–PHX	Houston to Phoenix	171	73.7%	6.2 min	0.0%
HOU–MCO	Houston to Orlando	169	83.4%	-0.9 min	0.0%
HOU–LAS	Houston to Las Vegas	159	82.4%	0.5 min	0.0%
HOU–AUS	Houston to Austin	149	75.8%	3.9 min	0.0%
HOU–BNA	Houston to Nashville	146	82.9%	-0.2 min	0.0%
HOU–MDW	Houston to Chicago	144	79.9%	1.0 min	0.0%
HOU–SAT	Houston to San Antonio	143	76.2%	2.7 min	0.0%

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), April 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2024	Minutes
Air carrier	39.5%	33.6%	21,589
Late-arriving aircraft	39.1%	41.0%	21,369
National Aviation System	19.0%	20.0%	10,383
Extreme weather	2.1%	5.1%	1,124
Security	0.4%	0.2%	232

54,697 delay minutes on 924 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 April 2024?

76.8% of 4,857 scheduled domestic departures left less than 15 minutes late, and 80.4% reached their destination on time. The national figures that month were 80.5% and 80.2%.

How does that compare with a year earlier?

April 2023 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 April 2024; 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.