The Boston to Washington route currently shows fares from €101 on Farera. Washington is a directly reachable destination in United States from Boston. Mid-week departures and shoulder-season months tend to keep prices lower on this route. Compare months in the calendar below to identify the cheapest window before locking in your booking.
For the best prices on this route, aim to book at least 3-4 weeks in advance. Tuesday and Wednesday departures from Boston tend to be cheaper than Friday or Sunday flights. If €101 is above your budget, try adjusting to a shoulder-season month using the calendar above - fares can drop significantly outside peak periods.
The US capital is a city of monuments, memorials, and museums - the Smithsonian Institution alone runs 17 museums and galleries, all free to enter. Washington is served by three airports: Dulles (IAD), Reagan National (DCA), and Baltimore (BWI) - the latter two closer to the city but with fewer transatlantic options.