Yes I am well aware of the pandemic. I also am planning longer term ie summer time. Obviously everything can change but I live a shortish flight 2.5 hr away from country I grew up in. I have 2ds and obviously they miss their grandparents a lot and we only go once a year.
So what would be your cut off week if pregnant for a 2.5 hour flight (to avoid drip feeding I had covid at start of December and likely caught it from my children who were isolating already- so I have some immunity probably for 5 or so months. )