The viral video that claims that parasailers have been stuck in the air for more than three weeks in the Swiss mountains is False.
The story has been circulating on social media after being widely shared on platforms like Instagram, Facebook, and TikTok, especially. The story across these platforms claims that some parasailers have been floating mid-air with no way to land.

However, after thoroughly fact-checking this story, we discovered it to be a fake, as there are no reliable sources in the news or elsewhere that support this claim.
The incident itself is scientifically impossible for a person or group of persons to be trapped mid-air for three weeks.

Again, from our research, the viral story was created to capture the attention of viewers and social media users. We can also say that the post was created to entertain viewers.
It is important to note that before you share things on the internet and take the claims hook, line, and sinker, you need to fact-check these claims, as spreading them can cause panic and civil unrest.