Hi . That is a great question. Here is an article from one of our health leaders about autologous serum eye drops that includes a discussion of travel: https://chronicdryeye.net/living/autologous-serum-tears. She mentions that she purchased an an insulin protector kit from Amazon. Here is a video about traveling with the drops from another patient leader: https://chronicdryeye.net/video/carrying-autogolous-drops. For long flights, some airlines will allow you to pack your autologous serum drops in dry ice in your carry on, but it's best to check with the airlines first to make sure you pack your medications according to their rules. I hope this helps and that you get input from others in the community. Best wishes. - Lori (Team Member)