Hi there. It looks like PIT-EWR may not be too bad, but I would expect a lightly bumpy flight, especially as you near EWR due to rainy weather. I think this is the gasp of Florence. Although on a second look at some additional storm data, it does look rather stormy around EWR, so be ready for some bumps in and out of Newark, just in case
For EWR to AUA
A little bumpy out of Newark, but should be a fairly decent ride south to Aruba. A bit bumpier in the area of the Dominican Republic, and a lightly to moderately bumpy descent into Aruba due to weather in the area. Enjoy your trip down there!