Heads up, East Coast travelers! There's a sweet deal floating around for flights to and from Washington D.C. You can snag round-trip tickets for just around $337. The key to finding these deals is using a tool called Matrix Airfare Search by ITA Software. It's a bit more advanced than your average Expedia search, but it lets you pinpoint the cheapest dates. Once you find those dates, you can then book directly on the airline's website. Why does this matter? Because saving money on the flight leaves you with more to spend on all the awesome things D.C. has to offer. So, if you've been dreaming of visiting the nation's capital (or escaping it for a bit), now's your chance. Time to fire up that ITA Matrix and start searching!