The Federal Aviation Administration halted flights into New York’s LaGuardia Airport temporarily today because of a shortage of air-traffic control staff. A lack of workers at an air-traffic control facility in the Washington area prompted the FAA to stop inbound flights Friday to LaGuardia, one of the nation’s busiest transportation hubs.

The delay program known as a ground stop was lifted at 10:37 a.m. after an hour and 22 minutes, the disruption cascaded through East Coast airports such as Newark Liberty International and Philadelphia.

The FAA attributed the delays to “a slight increase in sick leave” and said that the effects on the aviation system were moderate.