WASHINGTON, Nov 3 (Reuters) - More than 3.2 million U.S. airline passengers have been impacted by delays or cancellations stemming from air traffic controller staffing issues since a government shutdown began on October 1, an airline group said on Monday.

Airlines for America, which represents American Airlines AAL.O, United Airlines UAL.O, Southwest Airlines LUV.N, Delta Air Lines DAL.N, JetBlue Airways JBLU.O and other major carriers, said 16% of delays were because of staffing issues in October, up from the typical 5% before the shutdown.

More than 300,000 passengers alone were impacted on Friday, the single-worst day since the shutdown began, the group added.

(Reporting by David Shepardson; Editing by Chris Reese)

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