Longest solo spaceflight
- Who
- Unknown
- What
- 4/23/7 day(s):hour(s):minute(s)
- When
- 19 June 1963
The longest duration spaceflight with a single person on board was the flight of Vostok 5, piloted by Soviet cosmonaut Valery Bykovsky. It was launched on 14 June 1963 and landed on 19 June 1963 with a total mission elapsed time of 4 days 23 hr 7 min.