My apologies, from routes online:
Dublin – Stewart Newburgh eff 25MAR18 Increase from 5 to 7 weekly
Edinburgh – Providence eff 25MAR18 Increase from 4 to 6 weekly
Shannon – Stewart Newburgh eff 25MAR18 Increase from 2 to 3 weekly
Let's see how things work out over the next few months. Summer 18 is a long way away really, I'd say there will be a lot of changes over the next few months, depending on how many Max's Boeing can get to Norwegian, how they perform in-service and forward bookings/fares. A lot of variables there!
Incidentally, whats the WiFi like on the 737s, does it work all the way across the atlantic?