Short-Term Visitors
30 days or less

Visitors for 30 or fewer days

[ N.B.: Visitors coming to Caltech for more than 30 days are considered to be "long-term" visitors and must have an official appointment recommendation submitted to the EAS Division office by the host at least 9 weeks (for non-resident aliens) or 5 weeks (for US citizens or permanent residents) in advance of the arrival date to allow time for processing the application. ]