Sit on the Left side of the plane for the best views on flights from Washington to Boston. Left side wins both departure and arrival. At DCA you get the full Washington DC monumental core, and at BOS you get the Boston skyline and Charles River on approach. During the cruise portion, the left side also faces inland toward Connecticut and Rhode Island's coastline and river valleys rather than open Atlantic.

During takeoff from Ronald Reagan Washington National (DCA), sit on the Left side for the best views. DCA's primary departure runway is Runway 1 (heading north), and departing aircraft typically bank left over the Potomac River. The left side gets a direct view of the Washington Monument, Lincoln Memorial, and the National Mall laid out below. Right side faces Arlington and suburban Virginia with far less to see. Notable sights include: Washington Monument and National Mall, U.S. Capitol building, Potomac River bends, Georgetown waterfront.

When landing at General Edward Lawrence Logan International (BOS), sit on the Left side for the best views. Logan Airport's primary arrival from the south uses Runway 4R/4L, with aircraft approaching from the southwest over Boston Harbor. The left side faces northwest, giving views over downtown Boston, the Charles River, and Cambridge. The right side looks out over open ocean and the harbor islands with less urban content. Notable sights include: Downtown Boston skyline, Charles River and Cambridge, Boston Harbor islands, Fenway Park.

The flight from Ronald Reagan Washington National (DCA) to General Edward Lawrence Logan International (BOS) takes Approximately 1 hour 15 minutes.

The flight tracks northeast up the I-95 corridor passing over Philadelphia and its Delaware River crossing, then the New Jersey Pine Barrens, New York City metro area (visible to the left at distance), Long Island Sound, and the Connecticut coastline including New Haven and the mouth of the Connecticut River before descending toward Boston over Rhode Island.