The phrase "fateful trip" refers to a journey or outing that is important or significant because it leads to a particular outcome or event that has a big impact. Full definition
Jesus came into the world riding an ass (granted he was in utero) and then took an ass on that fateful trip to Jerusalem. (nakedpastor.com)
But after a fateful trip to Matchaful, the new cafe a few blocks from mindbodygreen HQ, I decided it was time to try a full month of matcha. (mindbodygreen.com)
No - one could have predicted how that fateful trip would go on to change her life. (fitbodyhq.com)