More than 50 flights have been canceled at Logan International Airport on Monday, the fourth day of the Federal Aviation Administration’s order to reduce air traffic due to the ongoing government shutdown.

A total of 56 flights within, out of, or to the airport have been canceled, with another 82 delayed as of Monday morning, according to the FlightAware tracker.

Republic Airways is seeing the most cancellations at Logan International Airport, with 21 total. JetBlue and Delta Air Lines are also seeing double-digit cancellations, at 11 and 10, respectively.

JetBlue is experiencing the most flight delays at the airport by far, with 25 flights delayed so far today, which may increase throughout the day.

Across the country, more than 1,800 flights have been canceled on Monday. Each day since the FAA’s order took effect on Friday has seen more than 1,500 flight cancellations across the country. Sunday’s total was almost 3,500, according to FlightAware.

A total of 107 flights at Logan International Airport were canceled on Sunday.

Earlier this week, U.S. Transportation Secretary Sean Duffy announced that he was ordering a 10% cut in flights at 40 major airports, including Boston’s Logan International Airport, due to air traffic control staffing shortages caused by the federal government shutdown.

To check whether your flight has been canceled, most major airlines, including American Airlines, Delta, JetBlue and United Airlines, allow flyers to check the status of their flights by inputting their flight number directly on their website. FlightAware also tracks all flight cancellations and delays.