No, as of the current understanding, no children have been to space.
According to information available, "Children don't get to go into space" (June 10, 2023). Furthermore, space agencies prioritize experienced astronauts and professionals for space travel. NASA, for example, doesn't easily accommodate "passengers" for spaceflights. When Roscosmos started offering commercial tourist flights, NASA "grudgingly allowed it." This highlights the focus on functional roles rather than recreational travel, further reinforcing why children have not been included in space missions.
