Those flights are most likely not going to happen this summer - with maybe a one-time exception or so.
EU won't let in US citizens.
US won't let in EU citizens.
There are some exceptions of course.
I do not think that fhe flights can be filled with a high yield with just one-wayer (EU citizens flying to EU; US citizens flying to the US);
However, with that policies in place, running such flights makes no economic sense.