William P Hobby in May 2024

60.9%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 May 2024, reporting carriers scheduled 5,010 domestic departures from William P Hobby (HOU). 60.9% left less than 15 minutes late and 64.6% reached their destination on time; 2.5% were cancelled.

Nationally that month, 73.4% of flights departed on time and 72.3% arrived on time, so HOU departures were 12.5 points below the national departure figure.

Flights arriving at HOU that month were on time 64.8% of the time (5,011 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 53%, air carrier 24% and national aviation system 13%.

On time 64.6%
Arrived 15+ minutes late 32.7%
Cancelled 2.5%
Diverted 0.3%

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

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

Measure	May 2024	Year earlier	HOU, 12 months to Jul 2026	All reported flights, May 2024
Departed on time	60.9%	—	72.7%	73.4%
Arrived on time	64.6%	—	76.0%	72.3%
Cancelled	2.5%	—	0.9%	1.4%
Average departure delay (late minutes only)	29.7 min	—	15.0 min	20.8 min
Scheduled departures a day	167	—	148	20,325
Scheduled departures	5,010	—	53,894	609,743

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	4,606	92%	64.8%	21.1 min	2.1%
MQ Envoy Air	184	4%	55.4%	24.8 min	13.6%
DL Delta Air Lines	148	3%	73.6%	33.1 min	0.7%
G4 Allegiant Air	39	1%	69.2%	37.6 min	0.0%
F9 Frontier Airlines	33	1%	36.4%	30.0 min	6.1%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
HOU–DAL	Houston to Dallas	363	59.2%	26.1 min	5.8%
HOU–ATL	Houston to Atlanta	313	68.4%	29.4 min	1.6%
HOU–DEN	Houston to Denver	214	64.5%	18.1 min	2.3%
HOU–MSY	Houston to New Orleans	199	71.9%	20.0 min	1.0%
HOU–DFW	Houston to Dallas/Fort Worth	184	55.4%	24.8 min	13.6%
HOU–PHX	Houston to Phoenix	177	63.3%	18.3 min	2.8%
HOU–MCO	Houston to Orlando	172	64.5%	19.8 min	2.3%
HOU–LAS	Houston to Las Vegas	165	72.1%	15.0 min	3.0%
HOU–AUS	Houston to Austin	154	63.0%	26.9 min	1.3%
HOU–BNA	Houston to Nashville	151	66.9%	18.8 min	0.0%
HOU–MDW	Houston to Chicago	150	69.3%	14.3 min	1.3%
HOU–SAT	Houston to San Antonio	148	61.5%	22.8 min	2.0%

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), May 2024.

Delay causes

BTS cause category	Share of delay minutes	National, May 2024	Minutes
Air carrier	24.2%	29.8%	31,747
Late-arriving aircraft	53.1%	43.0%	69,771
National Aviation System	12.9%	20.1%	16,924
Extreme weather	9.7%	7.0%	12,761
Security	0.2%	0.1%	222

131,425 delay minutes on 1,637 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 May 2024?

60.9% of 5,010 scheduled domestic departures left less than 15 minutes late, and 64.6% reached their destination on time. The national figures that month were 73.4% and 72.3%.

How does that compare with a year earlier?

May 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 May 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.