I take Trulicity for my type 2 diabetes. My pens can stay in the the fridge (36-46°F) until the expiry date. They can stay at room temperature (59-86°F) for up to 14 days. This 14 days is cumulative. Meaning I could fly with them at 59-86°F (the cooler the better) for say 48 hrs, put them back in the fridge, and still have 12 days at room temperature left to use.
My Lantus insulin has a 28 day window... bonus! 😉
I went to my current travel solution after we retired and we started frequently traveling on trips longer than 14 days and after I ran into a hotel room with a cooler where one expects a fridge.