After a nationwide ground stop Friday, travelers are still encountering snags, and it could take several days for flight schedules to return to normal.

Judge Ana C. Reyes, who has been overseeing combative litigation, said the Trump administration would not be responsible for operating the course while the case proceeded.

The Starship spacecraft returned from orbit to the same spot where it lifted off, marking a key milestone in SpaceX’s vision of building fully reusable rockets.