Campus visit after acceptance - funded or not?

[shibboleth12]

Quick question for folks here: once accepted to a PhD programme in the USA (humanities in my case), is one generally invited to visit campus for an open day in the Spring, and (most importantly) is the travel funded by the university for an admitted prospective student?  I'm applying to a handful of schools with hideously bloated endowments, so I'd assume that the resources are available, but I don't know the operating protocol on this and can't find anything remotely illuminating online. (I'm living abroad at the moment, so getting back to the East Coast would be a trip on the struggle bus without some flavor of assistance.)  This is clearly putting the cart before the horse in my case, but it's an easy question to answer for someone who's run this gauntlet already. Thanks! x

[Eigen]

In the STEM fields, its funded, usually up to a certain amount. 

 

From the humanities fields I know, the case is usually the same, but I'm not sure how universal it is. 

[shibboleth12]

Good to know, thanks!