What is best n cheapest way to travel from BWI(Baltomore Washtington airport) to IAD(Dulles Airport)?

Question

What is best n cheapest way to travel from BWI(Baltomore Washtington airport) to IAD(Dulles Airport)?

Answer 1

The cheapest way would be to take public bus from BWI to DC, then take a second public bus from DC to Dulles.  Go to the Washington DC Transit Authority's web site for bus schedules and more details.  It would take a long time (at least 2 hours) but it would definitely be the cheapest - it would be $5 or $6 altogether.

You might explore other options like the Super Shuttle or other shuttle services.  It would cost $30 and up, but you'd get there a lot faster.