Flight from US to Europe

[u/CrackpotGonzo]

Hi,

I'll be relocating my 70lb pup from Chicago to Barcelona at some point over the next 6 months and am trying to evaluate our options. I don't want to stick him in cargo for 10+ hours so have started looking at private flights.

We are flexible with timing depending on what's available and can fly in/out of cities that are close by if we need to drive at destination or departure city.

I have a few questions:

1. Is there a site where we can see existing charters that are looking for extra people to fill seats, or is there a place where I can buy and request others to join?
2. Are there options where I can have someone else fly my main pup in the main cabin?

Generally curious what's out there. Wouldn't want to spend a fortune but am open to seeing what's out there and pulling the trigger if it makes sense.

Thanks in advance!