Nearly 100 flights were canceled at Chicago airports on Friday morning, as airlines began cutting flights in response to a mandate from the U.S. Department of Transportation to reduce air traffic by 10% at 40 "high-volume" airports.

As of Friday, 80 flights were canceled at O'Hare International Airport and 18 flights were canceled at Midway International Airport. CBS News Chicago will continue to provide updates. 

American Airlines confirmed 19 of 466 departures from O'Hare were canceled on Friday. 

"Since this situation is fluid, customers are notified as soon as a cancellation decision is made," AA officials said in a statement. "There's no way to tell how much advance notice will be given or any timeline. the best thing is to sign up for notifications." 

United Airlines is offering a list of affected flights on their website. Anyone who booked a United flight is asked to check the updated list for more information on cancellations.  The airline said they're avoiding cuts between their hub airports, like O'Hare, Denver and Houston, if they can. 

Delta confirmed reductions at 40 U.S. airports to "comply with federal directives." 

"All planned FAA-directed flight cancellations for Nov. 7-9 have been completed," Delta said in a statement. 

Airlines are providing refunds, but other travel accommodations are not covered. Airlines are also scrapping the flight change fees depending on flight location. 

United Airlines outlined its plans Thursday afternoon, announcing a 4% reduction in flights at O'Hare International Airport starting Friday, or about 23 round-trip flights. American Airlines also said it will reduce its scheduled flights by 4% from Friday through Monday.

United will stay at 4% reductions for four days, and then gradually increase cuts until they hit a 10% reduction next Friday – a date they said was mandated by the Federal Aviation Administration.

At Midway Airport, one family on their way to attend a wedding said they had already been notified that their return flights were canceled.

"We got a text message on our way here that our flight returning home was canceled," said Sara Klimpel of Orland Park, who is flying on Southwest Airlines.  "We're changing our flight out home on Sunday from Tuscon to Phoenix so it's just a nightmare."

The alternate route requires them to drive for about an hour and a half to get to a different airport.

"[My daughter's] got school, I mean she's missing school today so that's bad enough, but it's a wedding," Kimpel said "If it were anything else, we wouldn't have come."

She's also hoping that their new nonstop flight home, compared to the original flight which had a connection, will be less affected by the cuts.

Many flights at Midway took off without delay, and the TSA lines have also been moving pretty smoothly without long queues.