HOU · William P. Hobby Airport

Share of flights 15+ min late, by month

departures arrivals usual for the month (departures) Jan 2015 → Jul 2026; gridlines 10/20/30/40%

Month	Flights	Late 15+	vs usual	Cancelled	Avg min	Main cause
Jul 2026	4,773	36.6%	+3.3	1.0%	22	Late aircraft
Jun 2026	4,514	39.5%	+6.7	0.6%	23	Late aircraft
May 2026	4,533	35.2%	+9.4	0.8%	19	Late aircraft
Apr 2026	4,418	26.5%	+3.4	0.1%	14	Late aircraft
Mar 2026	4,578	37.3%	+15.2	1.4%	21	Late aircraft
Feb 2026	3,832	18.5%	+0.8	0.7%	10	Late aircraft
Jan 2026	4,081	14.6%	-5.9	2.5%	7	Airline
Dec 2025	4,634	22.9%	-3.6	0.4%	12	Late aircraft
Nov 2025	4,552	23.3%	+5.7	2.2%	14	Late aircraft
Oct 2025	4,887	24.0%	+3.1	0.2%	13	Late aircraft
Sep 2025	4,452	14.8%	-4.4	0.1%	8	Late aircraft
Aug 2025	4,640	23.4%	-0.7	0.4%	14	Late aircraft
Jul 2025	5,093	33.3%	+0.3	0.8%	21	Late aircraft
Jun 2025	4,932	34.8%	+2.0	1.5%	22	Late aircraft
May 2025	4,742	25.9%	-5.4	0.9%	16	Late aircraft
Apr 2025	4,624	23.1%	-3.6	0.6%	15	Late aircraft
Mar 2025	4,694	19.7%	-2.4	0.8%	12	Late aircraft
Feb 2025	3,883	17.7%	-0.8	0.4%	10	Late aircraft
Jan 2025	4,122	16.9%	-3.6	6.3%	10	Late aircraft
Dec 2024	4,633	23.8%	-6.7	0.5%	17	Late aircraft
Nov 2024	4,521	14.2%	-9.5	0.4%	8	Late aircraft
Oct 2024	4,885	16.0%	-8.0	0.9%	9	Late aircraft
Sep 2024	4,407	14.2%	-7.2	0.4%	7	Late aircraft
Aug 2024	4,702	19.1%	-5.1	0.7%	12	Late aircraft

Airline	Flights	Late	Canc.
Envoy	40	13.9%	10.0%
PSA	111	15.4%	6.3%
Delta	118	18.3%	2.5%
Southwest	4,236	23.8%	1.9%

Airlines with 30+ departures that month.

Date	Flights	Late	Canc.
2017-08-27	142	—	100%
2017-08-28	152	—	100%
2017-08-29	152	—	100%
2017-08-30	152	—	100%
2021-02-15	111	—	100%
2025-01-21	124	—	100%
2021-02-17	104	90%	81%
2017-08-31	153	0%	98%
2024-07-08	178	71%	87%
2017-09-01	152	14%	95%
2022-12-26	158	80%	71%
2022-12-23	155	92%	18%

Departures; ranked by share late or cancelled.

None recorded.