how do i download my purchased movies from my mac to my macbook air?

i have a mac at home that has all of mine and my family's movies on it. we are going on a road trip and i would like to be able to watch some of the movies on my macbook air in the car, but i can't figure out how to get the movies downloaded onto my computer. i have different apple id's on the computers, so i can't sync them on the cloud, and i also dont have a cord to connect them, so i can't sync them that way either. i have also tried putting them onto my phone and then transferring them to my laptop but i only have an 8 GB phone, so i dont have enough room to download any of them. if anyone knows how to download movies from a mac to a macbook air with a different apple id without a cord that would be great! thanks!