We've scanned every flight from Boston to Washington DC to find the best deals. If you want a cheap flight, it's best to be as flexible as you can on dates. If that day's no good for you, try searching by month to see some alternative dates.
You can use the filters on your search to see more flights and find cheaper rates – Washington DC has more than one airport. So if you don't need to fly into Washington DC Washington Dulles International Airport, it's worth checking your other options.
Keep your eye out for flights
If you're planning on going to Washington DC during this time, you could take a look at other airport options. Or you could try to get a last-minute bargain.