Originally Posted by
abebix
Forgot to mention, but it will be a Sun morning, so it should take care of the rush problem. Will El trains still run this early in the morning?
The point about rush was a good thing, actually, because it meant Metra was an option. The Metra line doesn't run on the weekend, so you will have to take the L. The Blue Line runs 24 hours. Trains are about 12-15 mins apart at that time on a Sunday, so you should be okay assuming everything goes quickly at immigration/customs.