Traffic patterns. Every few years or so they rotate the boston air traffic patterns. There are a variety of reasons but one of them is local noise pollution. Unfortunately airplanes are noisy and any people who live by a major airport are going to get some noise from low flying craft. However it was decided when Logan was being built that east boston would have born the brunt of that noise pollution. As a middle ground that agreed to rotate the incoming air traffic to fly over from a number of different directions on a rotating basis. You’re probably just in the new pattern route. It won’t last too long. Just try and get used to it and you won’t even notice after a while

https://www.boston25news.com/news/local/sound-decision-faa-changing-some-flight-patterns-logan-cut-down-noise/5ZAVUUYD2VFZXC5WVEQSRKVUWE/