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Northeast megalopolis - Wikipedia
Boston to Washington, DC - 12 ways to travel via train
Find Cheap Flights from Boston to Washington, D.C. - Google
$74 Cheap Flights from Boston (BOS) to Washington (DCA)
$38 CHEAP FLIGHTS from Boston to Washington, D.C. (BOS - WAS) - KAYAK
Cheap Flights from Boston to Washington, D.C. | United Airlines
Boston to Washington by train (Amtrak) - Rome2rio
How to Get From Boston to Washington, DC - TripSavvy
Southwest® flights from Boston Logan to Washington, D.C.
Direct (non-stop) flights from Boston to Washington