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Airport data

IAH performance data

At IAH (Houston, TX) in 2024, 2.03% of 115940 departures were cancelled and 24.4% left 15+ min late.

We hold 28 validated statistics for this airport, covering 1987 to 2024.

What this does not meanThis airport’s figures span 1 January 2018, when the DOT changed both which carriers must report (from 1% to half of one percent of domestic scheduled passenger revenue) and how flights are attributed (from the operating carrier to the marketing carrier). Figures either side of that date describe different populations of flights, so they are listed by year below rather than drawn as one continuous trend.

Traffic and reliability

  • At IAH (Houston, TX) in 2024, 2.03% of 115940 departures were cancelled and 24.4% left 15+ min late.

    2024n=115940 departures

    Reporting carriers only; weather mix varies by region.

  • George Bush Intcntl/Houston (IAH, Houston TX) boarded 23349157 passengers in CY2024, up 5.0% vs 2023 — #15 nationally.

    2024complete FAA enplanement census

  • At IAH (Houston, TX) in 2023, 1.07% of 111892 departures were cancelled and 22.6% left 15+ min late.

    2023n=111892 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2022, 1.92% of 125871 departures were cancelled and 18.6% left 15+ min late.

    2022n=125871 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2021, 2.11% of 129036 departures were cancelled and 18.9% left 15+ min late.

    2021n=129036 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2020, 5.53% of 102231 departures were cancelled and 9.5% left 15+ min late.

    2020n=102231 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2019, 1.44% of 179688 departures were cancelled and 21.4% left 15+ min late.

    2019n=179688 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2018, 1.04% of 173806 departures were cancelled and 17.3% left 15+ min late.

    2018n=173806 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2017, 2.73% of 129271 departures were cancelled and 15.2% left 15+ min late.

    2017n=129271 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2016, 1.2% of 137092 departures were cancelled and 16.0% left 15+ min late.

    2016n=137092 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2015, 1.39% of 159833 departures were cancelled and 20.8% left 15+ min late.

    2015n=159833 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2014, 2.15% of 174210 departures were cancelled and 23.3% left 15+ min late.

    2014n=174210 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2013, 1.05% of 181071 departures were cancelled and 20.5% left 15+ min late.

    2013n=181071 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2012, 1.07% of 177171 departures were cancelled and 22.1% left 15+ min late.

    2012n=177171 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2011, 1.2% of 175197 departures were cancelled and 20.8% left 15+ min late.

    2011n=175197 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2010, 0.75% of 183233 departures were cancelled and 19.1% left 15+ min late.

    2010n=183233 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2009, 0.68% of 183035 departures were cancelled and 17.9% left 15+ min late.

    2009n=183035 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2008, 1.76% of 185172 departures were cancelled and 22.2% left 15+ min late.

    2008n=185172 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2007, 1.01% of 200431 departures were cancelled and 21.9% left 15+ min late.

    2007n=200431 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2006, 1.06% of 224061 departures were cancelled and 24.2% left 15+ min late.

    2006n=224061 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2005, 1.62% of 212013 departures were cancelled and 19.0% left 15+ min late.

    2005n=212013 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2004, 0.9% of 202030 departures were cancelled and 20.4% left 15+ min late.

    2004n=202030 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2003, 0.61% of 185182 departures were cancelled and 14.8% left 15+ min late.

    2003n=185182 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2002, 0.59% of 100477 departures were cancelled and 18.6% left 15+ min late.

    2002n=100477 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 2000, 1.39% of 131047 departures were cancelled and 20.8% left 15+ min late.

    2000n=131047 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 1989, 0.93% of 87830 departures were cancelled and 17.1% left 15+ min late.

    1989n=87830 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 1988, 0.7% of 85012 departures were cancelled and 16.3% left 15+ min late.

    1988n=85012 departures

    Reporting carriers only; weather mix varies by region.

  • At IAH (Houston, TX) in 1987, 1.14% of 21566 departures were cancelled and 20.0% left 15+ min late.

    1987n=21566 departures

    Reporting carriers only; weather mix varies by region.

What this page does not tell you

  • Cancellation and delay rates are not directly comparable between airports. Route networks differ and so does the weather they fly through, and the source data says so.
  • Nothing here tells you what you are owed. That depends on the rule that applies to your situation, which is on the passenger rights pages.
  • These are counts and rates, not explanations. We have not tested why any figure moved.

Sources and provenance

Written by Row30 Data Desk. Data reviewed by Row30 Data Desk on July 26, 2026.

Underlying federal data covers 1987 to 2024.

Every figure above traces to a row in our statistics database: rel-airport-IAH-2024. Each was validated against its source row before this page could publish.

Found an error? Tell us and it goes in the public log.

How this article was produced

Produced with AI assistance and reviewed by a named human before publishing. The pipeline that pulls the federal data and computes the statistics is conventional software, not a language model. Software is never credited as an author.

Before a page can publish, an automated check matches every number in the draft against the stored source row. If a digit does not reconcile, the article is blocked. The same check confirms the period is stated, the citation is carried verbatim, the licence permits the use, and no comparative claim outruns its stated uncertainty.

How the Row30 Data Desk works, including what it is not.

Our full editorial standards are on the editorial guidelines page.

Source: Federal Aviation Administration passenger boarding data; analysis by Row30.

Source: U.S. DOT Bureau of Transportation Statistics; analysis by Row30.