If you’re wondering how long do helium balloons last, the answer depends on several factors. Standard latex balloons filled with helium typically float for 12 to 24 hours. In contrast, foil or Mylar balloons can last several days to weeks due to their non-porous material, which retains helium longer. Temperature and environmental conditions also play a role; exposure to heat or cold may shorten the lifespan. To maximize float time, consider using a helium preservative or inflating balloons closer to your event. Proper care ensures your helium balloons enhance celebrations for as long as possible!