Here's one more for your list: https://southshore.etaspot.net
Southshore Line - connecting Chicago, IL (Millennium Station) to South Bend, IN, via East Chicago, Gary, Chesterton, etc
Southshore Line - connecting Chicago, IL (Millennium Station) to South Bend, IN, via East Chicago, Gary, Chesterton, etc
Funny thing, is that Chicago has direct rail access from downtown to 4 airports in 3 states - Chicago O'Hare and Chicago Midway via the CTA, Milwaukee Mitchell (via Amtrak), and South Bend Regional (via the South Shore).