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Airport data

Chicago O'hare Intl Arpt (ORD) performance data

In 2026, (KORD) CHICAGO O'HARE INTL ARPT logged 228 reported wildlife strikes (1 causing damage); most-struck species: European starling.

We hold 29 validated statistics for this airport, covering 1987 to 2026.

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 ORD (Chicago, IL) in 2024, 1.35% of 280052 departures were cancelled and 23.7% left 15+ min late.

    2024n=280052 departures

    Reporting carriers only; weather mix varies by region.

  • Chicago O'Hare International (ORD, Chicago IL) boarded 38575693 passengers in CY2024, up 7.6% vs 2023 — #4 nationally.

    2024complete FAA enplanement census

  • At ORD (Chicago, IL) in 2023, 1.22% of 258867 departures were cancelled and 22.0% left 15+ min late.

    2023n=258867 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2022, 2.75% of 260571 departures were cancelled and 21.0% left 15+ min late.

    2022n=260571 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2021, 1.93% of 240953 departures were cancelled and 18.4% left 15+ min late.

    2021n=240953 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2020, 6.18% of 189639 departures were cancelled and 11.2% left 15+ min late.

    2020n=189639 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2019, 3.11% of 339606 departures were cancelled and 25.7% left 15+ min late.

    2019n=339606 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2018, 2.14% of 332952 departures were cancelled and 24.9% left 15+ min late.

    2018n=332952 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2017, 1.4% of 266460 departures were cancelled and 20.7% left 15+ min late.

    2017n=266460 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2016, 1.62% of 244082 departures were cancelled and 22.1% left 15+ min late.

    2016n=244082 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2015, 2.74% of 313536 departures were cancelled and 23.1% left 15+ min late.

    2015n=313536 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2014, 4.69% of 287036 departures were cancelled and 31.3% left 15+ min late.

    2014n=287036 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2013, 2.99% of 306439 departures were cancelled and 28.5% left 15+ min late.

    2013n=306439 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2012, 1.98% of 310778 departures were cancelled and 22.4% left 15+ min late.

    2012n=310778 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2011, 3.72% of 313589 departures were cancelled and 25.4% left 15+ min late.

    2011n=313589 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2010, 2.48% of 313399 departures were cancelled and 21.5% left 15+ min late.

    2010n=313399 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2009, 2.17% of 314690 departures were cancelled and 21.2% left 15+ min late.

    2009n=314690 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2008, 4.3% of 350380 departures were cancelled and 31.2% left 15+ min late.

    2008n=350380 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2007, 4.42% of 375817 departures were cancelled and 32.5% left 15+ min late.

    2007n=375817 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2006, 3.46% of 373736 departures were cancelled and 31.3% left 15+ min late.

    2006n=373736 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2005, 2.51% of 337708 departures were cancelled and 26.5% left 15+ min late.

    2005n=337708 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2004, 3.12% of 376170 departures were cancelled and 28.7% left 15+ min late.

    2004n=376170 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2003, 2.4% of 366705 departures were cancelled and 22.9% left 15+ min late.

    2003n=366705 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2002, 1.95% of 278473 departures were cancelled and 20.4% left 15+ min late.

    2002n=278473 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 2000, 6.51% of 296771 departures were cancelled and 34.4% left 15+ min late.

    2000n=296771 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 1989, 1.97% of 261259 departures were cancelled and 31.9% left 15+ min late.

    1989n=261259 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 1988, 1.56% of 271494 departures were cancelled and 23.8% left 15+ min late.

    1988n=271494 departures

    Reporting carriers only; weather mix varies by region.

  • At ORD (Chicago, IL) in 1987, 2.56% of 67216 departures were cancelled and 25.1% left 15+ min late.

    1987n=67216 departures

    Reporting carriers only; weather mix varies by region.

Wildlife strikes

  • In 2026, (KORD) CHICAGO O'HARE INTL ARPT logged 228 reported wildlife strikes (1 causing damage); most-struck species: European starling.

    2026voluntary+mandatory reports (undercount floor)

    Reporting is partly voluntary — true counts are higher.

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 2026.

Every figure above traces to a row in our statistics database: wildlife-(KORD) CHICAGO O'HARE INTL ARPT-2026. 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: FAA Wildlife Strike Database; analysis by Row30.

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

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