Is it still open today with the government shutdown?

I think it is open. But call and check just to be sure.

Arlington National Cemetery remains open and conducts operations as usual, during a government shutdown. We are open 365 days a year, from 8 a.m.-5 p.m. October-March and 8 a.m.-7 p.m., April-September.

Probably, but call to check

They are open!!

Today, Saturday (1.20.18) yes. Possibly limited in some capacity but open. However, by Monday, 1.22.18 it may be closed or extremely limited in what areas are open to the public.