George Bush Intercontinental/Houston in November 2025

78.7%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 November 2025, reporting carriers scheduled 10,022 domestic departures from George Bush Intercontinental/Houston (IAH). 78.7% left less than 15 minutes late and 77.2% reached their destination on time; 1.1% were cancelled.

Nationally that month, 78.1% of flights departed on time and 77.3% arrived on time, so IAH departures were 0.6 points above the national departure figure.

A year earlier, in November 2024, the airport had 9,576 departures with 84.2% leaving on time: a change of −5.5 points, with flights up 5%.

Flights arriving at IAH that month were on time 79.7% of the time (10,024 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 33%, late-arriving aircraft 32% and air carrier 30%.

On time 77.2%
Arrived 15+ minutes late 21.6%
Cancelled 1.1%
Diverted 0.1%

Every scheduled departure from IAH in November 2025, judged by arrival at the destination.

November 2025 against a year earlier, the airport's year and the nation

Measure	Nov 2025	Nov 2024	IAH, 12 months to Jul 2026	All reported flights, Nov 2025
Departed on time	78.7%	84.2%	78.1%	78.1%
Arrived on time	77.2%	83.9%	77.6%	77.3%
Cancelled	1.1%	0.2%	1.1%	2.5%
Average departure delay (late minutes only)	16.3 min	11.2 min	17.2 min	15.6 min
Scheduled departures a day	334	319	326	19,018
Scheduled departures	10,022	9,576	119,020	570,550

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
UA United Airlines	6,165	62%	78.2%	5.9 min	0.7%
OO SkyWest Airlines	1,206	12%	80.8%	8.2 min	0.0%
DL Delta Air Lines	674	7%	79.1%	13.4 min	1.3%
AA American Airlines	658	7%	73.3%	18.3 min	3.2%
NK Spirit Airlines	609	6%	75.0%	7.3 min	1.3%
F9 Frontier Airlines	391	4%	64.2%	16.8 min	3.3%
YX Republic Airline	105	1%	68.6%	0.4 min	8.6%
AS Alaska Airlines	88	1%	77.3%	6.6 min	0.0%
MQ Envoy Air	72	1%	70.8%	7.8 min	2.8%
B6 JetBlue Airways	48	0%	62.5%	18.6 min	2.1%
OH PSA Airlines	6	0%	50.0%	207.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
IAH–DFW	Houston to Dallas/Fort Worth	475	68.8%	22.6 min	4.6%
IAH–ORD	Houston to Chicago	466	65.9%	18.1 min	3.6%
IAH–LAX	Houston to Los Angeles	446	80.0%	0.6 min	0.7%
IAH–ATL	Houston to Atlanta	401	77.8%	6.5 min	2.5%
IAH–DEN	Houston to Denver	357	82.9%	1.9 min	0.0%
IAH–LGA	Houston to New York	353	63.5%	35.8 min	1.1%
IAH–MIA	Houston to Miami	333	80.2%	2.9 min	1.5%
IAH–EWR	Houston to Newark	326	69.3%	23.0 min	0.9%
IAH–LAS	Houston to Las Vegas	311	79.4%	-1.8 min	0.0%
IAH–SFO	Houston to San Francisco	299	81.6%	-0.9 min	0.0%
IAH–MCO	Houston to Orlando	290	82.4%	-2.3 min	1.0%
IAH–DCA	Houston to Washington	270	73.3%	4.5 min	3.0%

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), November 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Nov 2025	Minutes
Air carrier	29.8%	30.2%	46,819
Late-arriving aircraft	31.7%	38.3%	49,732
National Aviation System	32.5%	26.7%	51,054
Extreme weather	5.7%	4.6%	8,896
Security	0.2%	0.1%	367

156,868 delay minutes on 2,163 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 IAH on time in November 2025?

78.7% of 10,022 scheduled domestic departures left less than 15 minutes late, and 77.2% reached their destination on time. The national figures that month were 78.1% and 77.3%.

How does that compare with a year earlier?

In November 2024, 84.2% of 9,576 departures left on time and 0.2% were cancelled, against 78.7% and 1.1% in November 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for November 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for IAH · methodology · corrections.