A passenger waits in line at O’Hare International Airport on Wednesday, April 29, 2020. (WTTW News)

More than 1 million travelers are projected to pass through O’Hare and Midway airports over Memorial Day weekend, and the Department of Aviation wants people to know that masks are required.

A 2019 police booking photo shows Marilyn Hartman. (Chicago Police Department)

Marilyn Hartman, the Chicago woman dubbed the “Serial Stowaway” for her repeated attempts to sneak past security and onto flights, has been ordered held without bail after she was once again arrested at O’Hare Airport this week while out on electronic monitoring in a previous case.

(WTTW News)

An effort by city officials to finish a project to expand cargo operations at O’Hare Airport by borrowing $55.6 million advanced Monday after a monthslong delay prompted by concerns that the effort failed to meet the city’s self-imposed diversity goals.

This Saturday, Jan. 16, 2021, booking photo provided by the Cook County Sheriff's Office shows Aditya Singh. (Cook County Sheriff's Office via AP)

Aditya Singh, 36, is charged with felony criminal trespass to a restricted area of an airport and misdemeanor theft after he was arrested Saturday.

(WTTW News)

The airline industry has been devastated by the coronavirus pandemic, but with vaccines seemingly on the brink of approval, airlines are hopeful that 2021 could see the beginnings of a recovery for air travel.

(Angelo Esslinger / Pixabay)

In the midst of a surge in COVID-19 cases, health officials are now warning Chicagoans about possible exposure to another infectious disease.

(M W / Pixabay)

Chicago recorded its first official trace of snow of the season at O’Hare Airport on Monday morning, according to the National Weather Service. Oct. 30 is the “normal first date” for snow.

(WTTW News)

For the first time since it began flying to Chicago in 1985, Southwest Airlines will begin flying from O'Hare. Crain’s Chicago Business reporter Danny Ecker joins us with that story and more.

(WTTW News)

An effort by city officials to finish a project to expand cargo operations at O’Hare Airport by borrowing $55.6 million stalled amid objections from aldermen angry that the company that would benefit from the funds failed to hire enough Chicagoans.

(WTTW News)

With O’Hare and Midway airports deserted amid the coronavirus pandemic, stores, restaurants and rental car companies are set to get a two-month break on most of the rent they owe to the city under a proposal that cleared a key city panel Friday.

A passenger waits in line at O’Hare International Airport on Wednesday, April 29, 2020. (WTTW News)

O’Hare International Airport is one of the engines of Chicago’s economy. But what happens when that engine is operating at about 5%? We check out the scene at one of the world’s busiest airports.

A pedestrian wears a protective mask in Alhambra, Calif., Friday, Jan. 31, 2020. (AP Photo / Damian Dovarganes)

Under the new rules, U.S. citizens who have traveled in China within the last 14 days will be re-routed to designated airports, where they will undergo enhanced health screening procedures, including Chicago O’Hare International Airport.

This illustration provided by the Centers for Disease Control and Prevention in January 2020 shows the 2019 Novel Coronavirus (2019-nCoV).

Evacuees from Wuhan, China, will spend two weeks at a military base in Riverside, California, according to the Centers for Disease Control and Prevention. The risk to the American public remains low, officials said Friday.

(Raimond Spekking / Wikimedia Commons)

The Chicago-based airline is reducing flights from the U.S. to China as the coronavirus outbreak worsens.

This illustration provided by the Centers for Disease Control and Prevention in January 2020 shows the 2019 Novel Coronavirus (2019-nCoV).

The announcement from local health officials came just hours before the World Health Organization declared the coronavirus outbreak a global health emergency.

Illinois Gov. J.B. Pritzker speaks at a press conference Friday, Jan. 24, 2020. (WTTW News)

A new and potentially deadly virus circulating in China has been confirmed in Chicago, according to health officials. “This is a single travel-associated case, not a local emergency,” said Dr. Allison Arwady, commissioner of the Chicago Department of Public Health.