A report found that both of Chicago's major airports deal with delay issues. See a ranking of the nation's most delayed airports.

Overall, United has canceled more than 100 flights each day, from Friday, Nov. 7 through Sunday, Nov. 9, the airline's website showed. Of those, 34 United flights scheduled to depart or arrive at Chicago O'Hare International Airport Friday were cut, with that number increasing to 38 Saturday.

Transportation Secretary Sean Duffy announced 40 major airports would face a 10% cut in flights. See the full list of impacted airports.

As the longest government shutdown in U.S. history drags on, airlines have been ordered to begin reducing operations on a phased-in basis.

The Federal Aviation Administration will reduce flight capacity by 10% at 40 major airports across the country, officials announced during a press conference on Wednesday. The restrictions will go into effect Friday morning, FAA Administrator Bryan Bedford and Transportation Secretary Sean Duffy said.

Major changes are coming to Chicago's airports on Friday, as airlines are set to begin cutting the number of flights in the air as part of a mandate from the U.S. Department of Transportation to reduce air traffic by 10% at 40 "high-volume" airports.

The Federal Aviation Administration announced Wednesday it would reduce air traffic by 10% across “high-volume” markets to maintain travel safety as air traffic controllers go unpaid and exhibit signs of strain during the shutdown.

The Federal Aviation Administration has said it will reduce air traffic by 10 per cent across 40 “high-volume” markets to maintain travel safety.