On Wednesday evening, the longest government shutdown in US history ended. Fliers hoped it would also end the looming specter of airport cancellations and delays. Thanksgiving is coming, and with it the Sunday after Thanksgiving, the busiest travel day of the year.

Travelers should expect scattered delays and cancellations, aviation experts say, as airlines get their crews and aircraft back into place after weeks of acute staffing shortages. Last week, the US Federal Aviation Administration began requiring airlines to cancel flights , up to 6 percent of them earlier this week in 40 airports, some of the country’s busiest. The agency said the measure was necessary to keep airspace safe as controllers and security professionals missed their second straight paychecks . The effects of th

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