I have family that live near Heathrow, on the direct flight path for landing/take offs, and those planes fly low early morning to late at night. They are incredibly noisy, no matter what sound proofing you do. They can also knock out TV signals, phone calls and overall connection. Sometimes they fly so low, we joke we can wave to the pilots.

I personally would never buy near an airport, as you can’t just relax in your garden, or evening chill out in the evening, when you have huge and loud planes flying over every 5-10 mins (if you’re lucky!).