I have seen this question raised in the past but do not remember where.
I am flying American round trip to and from Barcelona.
On my American Airlines page, it says that I will be required to prove that I can pay for my trip in order to enter Barcelona. I believe that I can do this with my last bank statement and a credit card. It does not say that I might have to show proof. It says that I will have to.
This information was updated very recently like around August 24th.
For those who entered Barcelona recently, did you have to show proof that you could fund your vacation?