Airports serving Chicago, Atlanta and New York were among the hardest-hit by government-mandated flight cuts on Tuesday as lawmakers moved to end the US government shutdown.

Chicago O’Hare International Airport and Hartsfield-Jackson Atlanta International Airport, the world’s busiest hub, each had about 60 flights canceled as of 7:45 a.m. Eastern time, according to data from aviation analytics provider Cirium. The cuts represented more than 5% of each airport’s scheduled trips for the day.