To Europe, starting at 1790$ or only 1160$ for a one way flight, with Star Alliance member TAP.
TAP is flying via Porto now with their new A321neo LR (video below) and via Lisbon with the new A330neo for some destinatins in the US on many dates.
Flights are available the whole year, availability is the best when you look for dates well in advance, but of course not every single date will be available.
A stopover in Lisbon, Portugal is also available for free.
You may depart from Boston, Miami, New York or Washington DC, to many cities in Europe.
Here are the Links sorted by city of departure: