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Most delayed airlines at Chicago O'Hare International Airport (ORD)

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    Most delayed airlines at Chicago O'Hare International Airport (ORD)

    Winter weather is one of the most reliable heralds of flight delays. And Avery, the first winter storm of 2018, was no exception. The storm contributed to 2,558 cancellations and 8,215 flight delays on its first day, with lingering effects on subsequent days. Weather is one cause of flight delays categorized by the U.S. Department of Transportation's Bureau of Transportation Statistics. It's part of a broader set of conditions known as the National Aviation System which also includes airport operations, heavy traffic volume, and air traffic control. Extreme weather is in its own category; it covers real and forecasted blizzards, tornadoes, and hurricanes.

    Delays also are caused by aircraft carriers and include problems with maintenance and crews, baggage loading, fueling, and aircraft cleaning. Security and safety issues that many people complain about—waiting in security lines for more than 29 minutes, broken equipment, and evacuation of aircraft—are others. Late-arriving aircraft scheduled for a trip later is the last type of delay the government tracks.

    Some flights have more problems than others, and Stacker analyzed data from the Bureau of Transportation Statistics to determine which flights out of your city’s airport have the worst records. We ranked airlines by overall on-time performance for all arriving flights in August 2018. We also included the total number of the airlines’ flights out of the airport and their overall on-time percentage.

    Flying out of Chicago O'Hare International Airport (ORD) sometime soon? Take a look at our list to see if it’s likely that your trip will go as scheduled or that you’ll spend more time in the terminal than you had planned before heading to your destination.

  • Sla2931 // Wikimedia Commons
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    #13. Envoy Air

    Total flights (August 2018): 5,346
    On-time performance: 78.6%
    Air carrier delay: 3.2%
    Weather delay: 1.4%
    National Aviation System delay: 9.0%
    Security delay: 0.0%
    Aircraft arriving late delay: 7.9%

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    #12. Delta Air Lines Inc.

    Total flights (August 2018): 1,033
    On-time performance: 77.8%
    Air carrier delay: 4.3%
    Weather delay: 0.6%
    National Aviation System delay: 11.8%
    Security delay: 0.0%
    Aircraft arriving late delay: 5.5%

  • airlines470 // flickr
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    #11. Endeavor Air Inc.

    Total flights (August 2018): 171
    On-time performance: 74.9%
    Air carrier delay: 3.5%
    Weather delay: 0.6%
    National Aviation System delay: 15.5%
    Security delay: 0.0%
    Aircraft arriving late delay: 5.5%

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    #10. Republic Airline

    Total flights (August 2018): 1,476
    On-time performance: 74.6%
    Air carrier delay: 3.3%
    Weather delay: 0.8%
    National Aviation System delay: 14.3%
    Security delay: 0.0%
    Aircraft arriving late delay: 7.0%

  • Eric Salard // Wikimedia Commons
    6/ Eric Salard // Wikimedia Commons

    #9. ExpressJet Airlines Inc.

    Total flights (August 2018): 666
    On-time performance: 74.5%
    Air carrier delay: 3.1%
    Weather delay: 0.2%
    National Aviation System delay: 13.6%
    Security delay: 0.0%
    Aircraft arriving late delay: 8.6%

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    #8. PSA Airlines Inc.

    Total flights (August 2018): 205
    On-time performance: 74.1%
    Air carrier delay: 5.6%
    Weather delay: 0.1%
    National Aviation System delay: 12.2%
    Security delay: 0.0%
    Aircraft arriving late delay: 8.0%

  • Eric Salard // Wikimedia Commons
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    #7. American Airlines Inc.

    Total flights (August 2018): 5,793
    On-time performance: 73.5%
    Air carrier delay: 5.9%
    Weather delay: 1.0%
    National Aviation System delay: 11.7%
    Security delay: 0.0%
    Aircraft arriving late delay: 7.9%

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    #6. United Air Lines Inc.

    Total flights (August 2018): 7,484
    On-time performance: 73.2%
    Air carrier delay: 4.7%
    Weather delay: 1.0%
    National Aviation System delay: 12.6%
    Security delay: 0.0%
    Aircraft arriving late delay: 8.6%

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    #5. SkyWest Airlines Inc.

    Total flights (August 2018): 6,427
    On-time performance: 70.2%
    Air carrier delay: 4.9%
    Weather delay: 0.9%
    National Aviation System delay: 10.8%
    Security delay: 0.1%
    Aircraft arriving late delay: 13.2%

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    #4. Alaska Airlines Inc.

    Total flights (August 2018): 351
    On-time performance: 67.2%
    Air carrier delay: 8.0%
    Weather delay: 0.0%
    National Aviation System delay: 19.5%
    Security delay: 0.0%
    Aircraft arriving late delay: 5.3%

  • Cory W. Watts // Wikimedia Commons
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    #3. JetBlue Airways

    Total flights (August 2018): 258
    On-time performance: 63.6%
    Air carrier delay: 10.9%
    Weather delay: 0.1%
    National Aviation System delay: 19.4%
    Security delay: 0.3%
    Aircraft arriving late delay: 5.8%

  • Eddie Maloney // Wikimedia Commons
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    #2. Frontier Airlines Inc.

    Total flights (August 2018): 268
    On-time performance: 61.9%
    Air carrier delay: 11.0%
    Weather delay: 0.5%
    National Aviation System delay: 14.2%
    Security delay: 0.0%
    Aircraft arriving late delay: 12.3%

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    #1. Spirit Air Lines

    Total flights (August 2018): 894
    On-time performance: 61.6%
    Air carrier delay: 4.7%
    Weather delay: 1.2%
    National Aviation System delay: 24.5%
    Security delay: 0.1%
    Aircraft arriving late delay: 7.9%

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