The crew of the first completely private mission docked with the International Space Station on Saturday after a flight of more than 20 hours, as shown by live images from the US space agency NASA.
Previously, the astronauts had to wait around 45 minutes 20 meters away from the ISS because of a problem with a video camera that was needed for the docking manoeuvre.
The group -- consisting of Spanish-American astronaut Michael López-Alegría, US entrepreneur Larry Connor, Israeli entrepreneur Eytan Stibbe and Canadian investor Mark Pathy -- was on Friday in a Crew Dragon space capsule from Cape Canaveral Cosmodrome US State of Florida started.
Their trip to the ISS is organized by the private space company Axiom Space in cooperation with NASA and Elon Musk's company SpaceX.
There have been individual space tourists on the ISS several times, but the so-called "Ax-1" mission is the first completely private crew.
The four Axiom aviators are to remain on board the ISS for around a week and carry out scientific experiments.
Among other things, they will meet the German astronaut Matthias Maurer, who has been on the station since November and is scheduled to stay until the end of April.
The US astronauts Thomas Marshburn, Raja Chari and Kayla Barron and the three cosmonauts Oleg Artemyev, Denis Matveyev and Sergey Korsakov are also currently working on the ISS.