Flight
Providence RI If you can find a reasonably priced, convenient flight from your home airport to T.F. Green Airport in Providence (RI), grab it! Green Airport is only about 60 miles from the Cape, and it's a really easy drive. Fly to Providence, rent a car, and drive to Cape Cod. It's pretty likely that you'll be here in less time (and perhaps at less cost) than if you fly to Boston then fly/drive/bus to the Cape.
Flight
Boston Because Logan International is a huge airport that serves most every domestic and international airline, you'll probably have the largest selection of flights and fares if you fly from your home airport to Boston and make your way to Cape Cod from there. When you're planning your drive, you'll have two things to be concerned with: (1) commuter traffic in and around Boston, and (2) commuter/vacationer traffic at the Sagamore Bridge coming onto the Cape.
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