Does your family out there have any friends or family who have one? When we flew to see family overseas our aunt had one that she lent to my FIL to collect us. We know her, she’s not been in any collisions and it was as good as new. Did the job for a day or two xx
Try the app babyquip! I'm not sure if they have it there, but it's in most north American cities. You can rent all kinds of baby equipment from people that own them, and they usually have a lot of car seat options.
A lot of airports allow you to rent one for your trip! This way when you land you pick it up and take it to your car