You might be able to order them from Music Shop Europe (they ship internationally), but shipping is really messed up due to COVID-19. As a result, the next shipment from Flight isn't due for several months. Expect similar delays from all the companies right now.
China (and other countries where the ukuleles are manufactured) are back on track with production (although Chinese New Year and the annual disruption that causes is coming fast), but container ships are not able to dock, and then cannot be unloaded...as there are a shortage of trucks and so on.
In the long run, they'll get here (in the US) eventually--but it's going to take a while. So if you really want one in a shorter time frame, check with Music Shop Europe.