The FAA flight cuts are officially causing major headaches out there.

Dozens of flights at Boston Logan International Airport were canceled Friday morning, as the FAA-imposed 10% reduction in air traffic goes into effect.

As of 11 a.m. on Friday, 38 flights had already been canceled at Logan, according to the flight tracking website FlightAware.

Of those 38 nixed flights: eight were JetBlue; four were United; two were Southwest; and 20 were Republic.

There were also 58 delays so far at Logan.

“We are starting to see cancellations for Fri, 11/7 at Boston Logan due to FAA flight reductions,” Massport said in a statement. “We are expecting airlines to reach out to passengers directly. We urge passengers to check with their airline before coming to the airport.”

Some of those JetBlue canceled flights were supposed to head to Tampa (where the Patriots are playing this weekend), Orlando, and Atlanta.

The 10% cut in air traffic comes in response to the increasing pressures on air traffic controllers, who are being forced to work without pay during the government shutdown.

Officials say the flight cancellations are necessary for the safety of the country’s airspace.

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Other affected airports include those in Atlanta, Denver, Dallas, Orlando, Miami, and San Francisco. In some of the biggest cities — such as New York, Houston and Chicago — multiple airports will be affected.

Experts predict hundreds if not thousands of flights could be canceled. The cuts might represent as many as 1,800 flights and upwards of 268,000 seats combined, according to an estimate by aviation analytics firm Cirium.

Herald wire services were used in this report.