List of human spaceflights
These chronological lists include all crewed spaceflights that reached an altitude of at least 100 km (the FAI definition of spaceflight, see Kármán line), or were launched with that intention but failed. The USA has adopted a slightly different definition of spaceflight, requiring an altitude of only 50 miles (80 km). During the 1960s, 13 flights of the US X-15 rocket plane met the US criteria, but only two met the FAI's. These lists include only the latter two flights; see the list of highest X-15 flights for all 13. As of 5 May 2017[update], there have been 315 manned spaceflights that reached 100 km or more in altitude (317 including two failed attempts), 8 of which were sub-orbital spaceflights.
To date, there have been four fatal missions in which 18 astronauts died.
The Salyut series, Skylab, Mir, ISS, and Tiangong series space stations, with which various of these flights docked in orbit, are not listed separately here. See the detailed lists (links above) for information.
Missions which were intended to reach space but which failed to do are listed in italics, and fatal missions are marked with asterisk.