Easiest way get to Washington DC and back from Baltimore Airport?
I  am traveling to DC for 1 day. I am landing at Baltimore airport at 9:30  in the morning and have an appointment in DC at 1:00pm with a return  flight leaving at 8:30pm from Baltimore.  Could someone tell me what are the best way to get back and forth is? I  need to get to Massachusetts Ave which I was told is considered the NW  area. Forgot to mention. It will be a Tuesday. 
Washington, D.C. - 5 Answers
Random Answers, Critics, Comments, Opinions :
1 :
Go  to the train station at the airport.  Take the MARC train to Union  Station in Washington.  As to how to get to where you're going, Massachusetts Ave. NW is a  pretty long street covering a number of miles.  Go to www.wmata.com.   Enter Union Station as your starting point.  Enter the address for your  ending point.  The website will give you the choice of rail and bus to  get you to your destination.
2 :
Just enter the information  in the below URL and you can go to and from the Airport to your actual  appointment. The express bus from the Airport to Greenbelt has gone up  to $6.00. But the website will give you the entire cost. You might want  to compare it with MARC.   This is my help from Washington, D.C. United States of America. Please pick a "Best Answer", even if it is not mine. That way we can tell if we really do help people.
3 :
Take  the bus.  The B30.  I took it myself this past March.  Have some $1  bills ready.  The bus will take you along the Baltimore-Washington  Expressway into Greenbelt Station.  Hop the Metro into DC and ask about  Massachusetts Avenue. You're also good for all the area attractions.    One thing about the Metro is that its good to read and maps while on the  train, because the stations are so dark that you couldn't find a coin  if it dropped in front of you. (DC Metro stations are designed that way.  They look like a concert hall or theater.)  Follow this link:  http://www.bwiairport.com/en/travel/ground-transportation/trans/mta
4 :
MARC  or Amtrak to Union Station.   There's a shuttle bus that runs between the airport and train station.  All you have to do is take the shuttle and take a train. If taking MARC,  you'll want to check their schedule as they don't run in all directions  all the time (their schedule can be pretty limited) and they also don't  run on weekends.   If taking Amtrak, you may wish to buy a ticket in advance.  Amtrak's website: http://www.amtrak.com    MARC's website:  http://mta.maryland.gov/services/marc/?PHPSESSID=de19a79e532ea8b09f46fdf71867fb77    Union Station is on Massachusetts Avenue. Technically it's at 50  Massachusetts Avenue NE. You may be able to walk to your destination or  it may be too far. Use Google Maps to get directions. You can also  either take the bus, metro, taxi, or walk.   Metro's website (metro and bus): http://www.wmata.com
5 :
Your  first choice should be the Marc train. It will take you to union  station which on Mass Ave. The shuttle from the airport will take you to  the train station where you can catch the marc train. If you are coming  during the weekend the Marc does not run so your best option would be  the B30 bus to greenbelt. From there hop on the metro. Mass ave is very  long and not walkable. Check metro's website to see exactly where you  need to go.
