How long was the trip from Earth to Mars for Insight from blastoff to landing?
According to NASA's launch timeline, InSight launched at 5 May 2018, 12:05 PM UTC.
According to the up-to-date InSight Wikipedia page, InSight landed at 26 November 2018, 19:54 UTC.
This means that the entire trip took 205 days, 7 hours, and 49 minutes.
5$\begingroup$ Welcome to Space Exploration! As neither of the cited times included a seconds figure, I'm going to edit out the seconds from your otherwise devastatingly precise answer. $\endgroup$ Nov 26, 2018 at 20:46