Originally Posted by bitterproffit

I am confused. Doesn't UA 963 go to Newark?

I would fly from BER to FRA to return to ORD. I find FRA easy transit (when you are leaving Europe back to the US) and there are HOURLY flights from BER to FRA. I would get a ticket that went BER-FRA-ORD-XXX.

There are advantages to having all flights on one ticket.

As for a 4 hour layover, the last time I arrived in Chicago from Zurich, it took 2 hours to get through border control, get my luggage, go through customs, recheck my luggage, and then get to the United Terminal. And that was with Global Entry. So, I would be completely comfortable with a 4 hour layover knowing that its a nice time margin.