Is it possible to get from reagan national airport to baltimore by train?

Question

Is it possible to get from reagan national airport to baltimore by train?

Answer 1

I would fly into BWI, then take the shuttle over to BWI Station.  Once at BWI Station you can either take Marc or Amtrak to Baltimore.  Marc as far as I know only operates Mon-Fri.

Answer 2

Yes but it take 2 trains.

First get on the Metro at Reagan National Airport to Union Station.

Then get on a train from Union Station to Baltimore.

Answer 3

Metrorail subway from the airport to the Amtrak terminal,  then to Baltimore.

Why not fly into the north airport,  near Baltimore?