There have been no missions specifically to Uranus only.
The nearest approach was made by VOYAGER 2 on 24 January 1986 as part of its exploratory mission to make close passage by all the outer planets (except Pluto which was at that time still classed as a major planet)
The nearest approach was made by VOYAGER 2 on 24 January 1986 as part of its exploratory mission to make close passage by all the outer planets (except Pluto which was at that time still classed as a major planet)