Denver is always 1 hour behind Chicago. When it's 9:00 AM in Chicago, it's 8:00 AM in Denver. Both cities observe DST on the same schedule, maintaining the 1-hour difference year-round.
Chicago uses CST/CDT while Denver uses MST/MDT (Mountain Time).
Business hours overlap almost completely! 8:00 AM - 5:00 PM Denver corresponds to 9:00 AM - 6:00 PM Chicago. Easy scheduling with just 1-hour offset.
Denver and Chicago are connected by 2.5-hour flights with United and Southwest operating frequent service from both major airline hubs.