Dave’s - we have a garage full of different coolers (vendor swag) and not that makes me an expert but my thoughts:
Our smallest hard sided Yeti is heavy empty. It also doesn’t hold much. One large enough for our trips would likely trigger an overweight baggage fee.
When I went to replace our beloved 48 can Polar Bag, the 48s were out of stock on their website.
Our other soft sides work good enough for travel. When properly packed, stuffed stayed frozen 36+ hours. I never messed with dry ice.
I like the soft coolers because they collapse flat for storage.
.
