Originally Posted by _kurt

It’s an extra three stops on the blue line before the transfer, and three stops on red line after the transfer. The extra time on the train is minimal. But yes, the transfer from blue to red could add 15 minutes or more because sometimes there are long gaps between trains. I personally would either fully commit to public transit and ride it as close as it would take me to my destination, or just take a cab / uber from the airport to begin with. Mixing CTA and Uber, to me, brings the worst of both and optimizes for neither time nor money nor convenience.

One perk of sticking with the CTA all the way is traversing two of only three tunnels under the Chicago River that are open to the public. You can feel the change in depth and humidity.