Atlantis Ready For Its Final Mission

A total of 156 unique individuals flew with Space Shuttle Atlantis over the course of its 33 missions. Because the shuttle sometimes flew crew members arriving and departing Mir and the ISS, not all of them launched and landed on Atlantis.
Astronaut Clayton Anderson, ESA astronaut Leopold Eyharts and Russian cosmonauts Nikolai Budarin and Anatoly Solovyev only launched on Atlantis. Similarly, astronauts Daniel Tani and Sunita Williams, as well as cosmonauts Vladimir Dezhurov and Gennady Strekalov only landed with Atlantis. Only 146 men and women both launched and landed aboard Atlantis.
Some of those people however, flew with Atlantis more than once. Taking them into account, 203 total seats were filled over Atlantis' 32 missions. Astronaut Jerry Ross holds the record for the most flights aboard Atlantis at five.
Astronaut Rodolfo Neri Vela who flew aboard Atlantis on STS-61-B mission in 1985 became the first and so far only Mexican to have traveled to space. ESA astronaut Dirk Frimout who flew on STS-45 as a payload specialist was the first Belgian in space. STS-46 mission specialist Claude Nicollier was the first astronaut from Switzerland. On the same flight, astronaut Franco Malerba became the first citizen of Italy to travel to space.