SILVER LINE to IAD-Dulles airport is fully open and operational.
the station is on airport grounds a close walk from baggage claim
https://www.wmata.com/rider-guide/si...al-Airport.cfm
if you are looking to do IAD-DCA transfers…..the time at rush hour will be about 70-75 minutes. It can be longer on the weekends or when trains aren’t running as frequently because you need to transfer at Roslyn ststion. There could be situations where the silver line will only operate between Dulles and east falls church due to things like single tracking due to weekend track work. About 1-2 times a year they have weekend closures on the blue line between Roslyn and pentagon to do outdoor exposure track inspection.