Recent summers have brought about seemingly more extreme weather events, while every new report about climate change results in oft-repeated warnings and calls for immediate action. It can feel as if humanity is hurdling towards an abyss, and yet we can't stop traveling, which also contributes to the problem. Unfortunately, every vacation has a direct impact on the environment.
According to the World Travel & Tourism Council, 8%-10% of global CO2 emissions are caused by the travel and tourism sector. The majority of such emissions are caused by travel to and from a destination. Needless to say, the longer the route, the more CO2 is emitted.
https://www.dw.com/en/how-bad-for-the-environment-is-traveling/a-64092681