$99 - Roundtrip Flights to Boston from DC on AirTran
No surprise here, daily nonstop flights between Boston and Washington DC on AirTran for $99.
I’m not the biggest fan of AirTran, but for 50 bucks each way, I’ll tuck myself into a window seat and stare at the back of the seat in front of my for 45 minutes.
Virgin also flies between DC and Boston, so you could check for flights from them as well.
Weather in Boston gets particularly nice around late May until early July, before it gets too humid, and this can be the perfect time to catch a ferry or ride to anywhere along Cape Cod, Newport Rhode Island, or southern New Hampshire.