Originally Posted by pinniped

Apologies if these questions have been asked before. We're about to take our first trip outside the US in the covid era.

I'm returning to the US in a couple weeks, ATH-MUC on LH and then MUC-IAD on UA. (Outbound is all AA/BA.)

I assume I need to use United's Travel Ready Center to input passport information. My first problem is that it rejects my passport's expiration date as invalid. No matter what I put in there, it's always an error message...I can't get past the screen.