Monday marked the beginning of a Fourth of July week that was expected to be one for the record books, as more Americans are traveling than ever before.
Chicago was no exception, as Terminal 1 at O'Hare International Airport was more crowded than average on Monday, with long lines as people tried to get an early start to the holiday travel.
More than 2 million passengers were expected to pass through Chicago's airports this week, with 1.6 million flying through O'Hare and nearly 496,000 through Midway International Airport, between Monday and Sunday.
Sunday was projected to be the busiest travel day of the week at both airports, with nearly 258,000 people at O'Hare and more than 76,500 at Midway.
The holiday week was expected to see record-breaking travel numbers, with a one percent increase over last year's numbers and all signs pointing to summer 2018 being one of the busiest for travel nationwide.
Officials and experts recommend if you're traveling, to get to the airport early as Transportation Security Administration lines will be congested.
The recommended time to arrive is two hours before a domestic flights and three hours ahead of an international one.
Parking could also be an issue if you don’t plan accordingly. O'Hare's people mover, which takes travelers between terminals and economy parking lots, is adjusting its schedule to deal with the crowds, running 24 hours a day through Friday.