What word describes an experience that is not pleasant due to external conditions?

The most suitable word to describe an experience that is not pleasant due to external conditions is "journey." This term captures the sense of movement between places and often implies a more personal experience, which can include both positive and negative aspects. While a "flight" specifically refers to travel by air, it doesn’t convey the broader and potentially uncomfortable experiences associated with the journey itself.

Both "travel" and "expedition" suggest movement or exploration, but they also lack the specific nuance of an unpleasant experience due to external factors. "Travel" refers more generally to the act of going from one place to another, while "expedition" often implies a planned journey with a specific purpose. Therefore, the broad and nuanced meaning of "journey" makes it the most fitting choice for describing an experience impacted negatively by external conditions.