Flying can be a stressful experience and O'Hare International Airport in Chicago, Illinois is one of the worst. Kansas City's airport isn't far behind.
If you told me there was one state that you can't fly directly to from Missouri, I would have guessed a half dozen and not gotten it right. I can eliminate my first two guesses for you including Alaska and Hawaii. Nope. It's not either one of those.
The answer to the question "So, are we done with masks?" depends on what you might have in mind. Illinois' mask mandate is gone (with scattered exceptions), but traveling, and how you plan to travel, is a different story.