11 air traffic control centers have been temporarily closed after workers tested positive for coronavirus, highlighting a vulnerability in air travel

The control tower at New York's LaGuardia Airport, the busiest non-international airport in the tri-state area, was closed overnight on Saturday after an air traffic controller tested positive for COVID-19.

The impact on the airport's operation was minimal as restrictions limit the number of flights that can utilize LaGuardia overnight, with mainly early morning flights affected.

The New York Air Route Traffic Control Center on the grounds of Long Island's MacArthur Airport was temporarily closed after a controller tested positive for COVID-19.

The affected airspace restricted flights into New York area airports, with aircraft having to take longer routes in order to avoid closed sectors, as well as Oceanic airspace which stretches from New York past Bermuda and services flights heading to the Caribbean, Europe, South America, and Africa.

An air traffic controller who tested positive for COVID-19 on Saturday prompted the shutdown of Farmingdale Republic Airport's control tower on Sunday for a two-week period.

The Long Island airport, primarily catering to general aviation and business jet traffic will remain open under uncontrolled conditions leaving aircraft to communicate directly with each other when on the ground and in the proximity of the airport in the air.

An air traffic controller at a Washington, DC area airport tested positive for COVID-19 on Saturday, the closest reported case at an airport to the nation's capital and one of the most restricted airspace areas in the world.

Located just upriver from the capital, Leesburg Executive acts as one of the few private and general aviation-only airports serving Washington.

An air traffic controller assigned to the air traffic control tower at Peoria International Airport in Illinois tested positive for COVID-19 on Saturday.

The Central Illinois airport sees service from four airlines including American Airlines, Delta Air Lines, United Airlines, and Allegiant Air, as well as private and general aviation and aircraft.