A commuter train derailed this morning at Chicago O'Hare International Airport, injuring dozens, officials said.

The Airport Transit System at Chicago's O'Hare International Airport was down Thursday morning, officials confirmed, just as spring break travel begins to heat up.

Mayor Rahm Emanuel renewed his push for an express train to O'Hare as part of the infrastructure plan he laid out on Thursday during an address to city leaders.

Groundbreaking of O'Hare Airport's Concourse D begins, with strong support from local leaders for its economic and ...

The new 19-gate terminal — which promises daylit interiors, natural plantings, 20,000 square feet of lounge space, and even a ...