I’m getting my PPL out of BED (Hanscom) it’s a great airport. I have no idea about the fees for landing or staying overnight. I am fairly certain landing fees are cheap until 11:00pm until 6:00am. It’s probably about 20 miles from downtown Boston and you could expect about a 40min to 1 hour 15min commute to downtown Boston depending on the time of day. Its dual use so you have a good chance of seeing some cool military stuff. All branches of the military use it. I’m not sure when why they come Hanscom, but they do. MIT’s Lincoln Labs has their 707 based out of there which is the test bed for the electronics stuff that is going to be going into the 767 E-10A for the military. I have not flown in about 3 weeks because of finals exams for school, but I believe it is there right now. It’s usually inside of a hangar. I saw its land one time and it had lots of great black smoke coming out of the engines. There should be public transportation into the city via bus, but I wouldn’t count on it. There are always cabs and livery cars waiting to take people, and there is also a car rental place. However, I would call ahead and get firm transportation arrangements should you fly into Hanscom.
-Alex