If you need an option that involves a flight there are a few options. I have listed these in closest to farthest option from Ashfield.

Bradley International Airport, in Hartford, CT. This is about an hour and a half from Ashfield.

https://bradleyairport.com/

Albany International Airport, in Albany, NY. This is also in the range of an hour and a half from Ashfield.

https://www.albanyairport.com/

Boston Logan International Airport, in Boston, MA. This is about two and half hours depending on Boston traffic.

https://www.massport.com/logan-airport/