Tuning up a half step to full step is roughly the equivalent of going from medium to hard tension strings. Half step is a little less, whole step a little more.
The proviso is that very good Flamenco guitars are very lightly constructed, lighter bracing and thinner front than a Classical guitar in particular. Too much string tension might cause bellying of the front. So keep an eye on it, and if you feel that the increased tension is too much go back to standard tuning or drop to a lighter tension string set.
When the going gets weird, the Weird turn Pro.