Use a travel search engine and see how many direct flights between the two airports. Bonus points for early departures to your base and late departures out of your base.
Further bonus points for equipment type (number of pax seats and jumpseats).
Even more bonus points if your employer flies some of the flights (you will get Jumpseat priority).
Boston has good frequency with most major hubs. I have no issues in 2 yrs commuting to PHL (20 + flights per day).
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