The quickest way to get from Washington Dulles Airport (IAD) to Fort Belvoir is to taxi which costs $95 - $120 and takes 42 min.
Try uber or Lyft
It usually cost $100 dollars per traveler. Form the DIA Dulles International Airport to the Hospital will some mines cost $90 or $80 Dollars for a trip. Unless if it's less busy traffic, it can cost less expensive for that. [Notice] it won't happen very often, it's usually a cab driver's caculation to solve this. Or Uber would cost you $ $50 for that ride.
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