Sunday was expected to be the biggest travel day of the Thanksgiving holiday weekend at O'Hare International Airport, and the winter storm that socked the area this weekend has been more than disruptive.

As of Sunday morning, more than 1,500 flights had been canceled at Midway and O'Hare international airports. As of Sunday afternoon, there had been 300 additional cancellations, and there were delays of 49 minutes at O'Hare and eight cancellations at Midway.

Transportation Security Administration officials said Sunday was expected to be one of the biggest travel days in the history of the agency. They said they were expecting to screen more than three million travelers nationwide on Sunday alone.

After the snow already impacted thousands of people nationwide, it remains to be seen how that number might be affected.

Travelers came to O'Hare, where they were met with long security lines at the airport, and driving to the airport, some said it took them an hour and a half to drive from the north suburbs.

 "We left Egypt about a day and a half ago and have been trying to get back to Milwaukee since then," said Mary Jo Armstrong.

She said she spent 30 hours in a travel nightmare.

 "It was chaotic. Flights got delayed 10 hours," said Alondra Hernandez.

Hernandez was traveling with three kids under five, and was met with a canceled flight from O'Hare to Detroit.

She was in the lost baggage line after she lost not just one suitcase, but two and a car seat.

"Thanksgiving travel was so smooth up until yesterday," said John DiScala.

DiScala with JohnnyJet.com said the delays are weather-driven, not a backlog from the government shutdown.

 "The FAA seems like they got the controllers back on the track, so I think this is really just the weather right now," he said.

DiScala said if flyers are met with a cancelled flight, try to get in touch with an airline representative quickly to get on the next flight. They also might automatically put you on one.

"If you don't like what they are giving you, they might be putting you on two stops, or a time you don't want to go, call them up and say 'hey, I do not want this' and tell them what you want," he said.

With three million travelers on one of the busiest days in TSA history, and ground stops at Chicago airports all weekend, some don't want to travel anytime soon.

"In November and December, no trips," Hernandez said.

"Give us a little time, we will travel again," Armstrong said.

Travel experts also said you should download your airline's app with your updated contact info so you can get up-to-date delays and cancellations without going to the airport.