Airports:

DCA - Ronald Reagan Washington National Airport

2401 Ronald Reagan Washington National Airport Access Rd, Arlington VA 22202

Ronald Reagan National Airport is the most conveniently located option, as it is the only airport within the Beltway, and it has a great view of the city. It is also metro accessible. There are plenty of affordable hotels nearby in Crytal City and Pentagon City with airport shuttles regularly available.

IAD - Dulles International Airport

1 Saarinen Cir, Dulles, VA 20166

Although Dulles International Airport is in Virginia, about 20 miles NW of DC proper, it is also metro accessible. While there are hotels close to this major airport, you will be relatively far from the city's many attractions as well as the wedding venue.

BWI - Baltimore/Washington International Thurgood Marshall Airport

7050 Friendship Rd, Baltimore, MD 21240

Baltimore is a great alternative option for flying into DC but it is a little bit of a hike, around 30 miles north of DC proper. Although the metro does not stretch all the way to Baltimore, the Amtrak and MARC trains run regularly between Union Station in DC and BWI and they are very affordable.