A flag manifold over a semifield $K$ can be partitioned into “half $i$-circles” which are orbits of a $K$-action on that flag manifold. Here $i$ is fixed and it corresponds to a simple reflection in the Weyl group. We prove (for certain $K$) a connectedness property of the flag manifold: any two points of it can be joined by a finite sequence of half $i$-circles for various $i$.