That's not to say the results on Google aren't getting worse, because they are, but DDG still has a long way to go.
Sure, Google also has a flight tracker widget, but it's not that much worse than DDG. If you really want no widgets or inline responses, https://www.startpage.com/ has that.
EDIT: Startpage does have a time widget (search for "time in <some place>"), but doesn't have a calculator, timer, or literally anything else. How odd...
"Startpage acts as an intermediary between you and Google, so your searches are completely private. Startpage submits your query to Google anonymously, then returns Google results to you privately. Google never sees you and does not know who made the request; they only see Startpage."