ORDAirport Guide

Events and busy seasons

Every ORD guide on events and busy seasons: 8 guides, each answering one question. They include lollapalooza weekend at O'Hare.

The times of year when ORD is at its busiest, and the events that fill it: what to expect at security and on the roads, when to arrive and how to get to the venue from the airport. The security page carries the checkpoint facts for any day.