I'm flying back and forth to Europe a lot. I take two different routes.
1. Jetairfly from Santo Domingo to Brussels, and then a separate ticket to wherever you are going (be careful to allow a lot of time because often the flight is late, and i haven't had enough time to catch my connection flight--which is with a different airline, which meant i had to buy a whole new ticket.) The is the new Dreamliner planes; they're big, comfy, and beautiful.
2. Condor Airline from Puerto Plata to Frankfurt (it stops in Punta Cana), and then a connection flight to wherever in Europe you are going. Condor has an alliance with other airlines, so your connection flight is safe (unlike with Jetairfly). Do yourself and upgrade to their Economy Plus (or whatever its called), you egt bigger seats, free drinks, and all the movies you want to watch.
I'm still only seeing one long line, so, i cannot edit this if their are any mistakes.
Frank