There are 3 bus companies operating 4 routes, 1 train company operating 7 routes - Shuttle, Silver Star, Acela Express, Vermonter, Piedmont, Crescent, Cardinal. The cheapest bus costs $1 and is 1h 19min. The cheapest train costs $25 and is 36min.
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There are 4 ways to travel from Baltimore to Washington, D.C.. 4 buses, 3 trains, 1 flight and 1 by car are possible between the two areas. The bus operated by Megabus running from Baltimore to Washington is the cheapest. The train operated by Amtrak running from BWI to WAS is the fastest. The bus operated by Megabus running from Baltimore to Washington is the most convenient.
It's important to check each mode when booking your ticket so that you can find the best method for you. The cost of each type varies differently, so be sure to use Faretrotter to keep an eye out!
There are several bus companies - Megabus, Greyhound, Peter Pan / Greyhound - scheduled to run from Baltimore to Washington, D.C.. Since there are multiple companies, this should increase your chances of finding a cheaper or discount bus ticket. One train provider, Amtrak, runs trains from Baltimore to Washington, D.C.. Because the bus is cheapest, we recommend taking the bus.