You need to look at a flight chart of your area to see if any airways exist above your area. Go to skyvector.com and click on the chart that is in your area. Then, you'll notice a series of circles with tik marks, which are called VORs. These VORs have airways coming put of them, shown as light blue lines and their names start with a "V". Jets and airlines only fly on those designated airways. As long as none of those airways are above the location of the house, you won't get any jets flying above, except if you are in the immediate vicinity of a major airport.FlightAware: FlightAware shows you live flight tracking so you can see how often planes are crossing overhead your potential new home.
You can also check satellite mapping sites like Google Maps and see the orientation of the runways but doublecheck against the SkyVector IRF chart for departure paths. New runways can always be constructed later as well.
Keeping things low tech and friendly, you could always just knock and ask the neighbors as well.
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