Florida ? After a week of flying together, shuttle Atlantis undocked from a larger and virtually completed International Space Station on Sunday and headed for home on its final voyage.

“Have a safe trip back and godspeed to you,” radioed the space station’s skipper, Oleg Kotov.

Atlantis isn’t due to land until Wednesday. Today, the six crewmen will conduct one last safety inspection of their ship.

“We’ll see you all on the surface of planet Earth again soon,” Atlantis’ commander, Kenneth Ham, called out.

The two spacecraft parted company 220 miles above the Indian Ocean. Before the hatches closed between them, the commanding officers shook hands twice and laughed, then embraced. Their crewmates — representing the United States, Russia and Japan — followed.

Earlier in the day, Ham told reporters that both crews had fun. All 12 space fliers bonded through hard work and performed as a single team, he said. Mission Control reveled in the camaraderie as well, and lead flight director Emily Nelson relayed her appreciation as Atlantis sailed away from the orbiting outpost.