We live in Vermont, traveling to Zurich in June. I’ve been tracking prices from Boston, Hartford, Burlington, and Montreal for 136 days. The nonstop out of Logan has barely budged over that timeframe, and I agree that it’s expensive (currently >$1400 for our itinerary, which is open jaw returning from Venice).
I wound up buying tickets out of Montreal and felt like I got a good deal at $870 US, nonstop both ways. Of course it went down to $760 after I bought the tickets.... can’t win ‘em all...
I don’t know specifically where you are, but if Montreal is an option, I’d check there.