| 41 | 1 | 53% |
| Seasons | Championships | Playoff Percentage |
1979
The Seattle SuperSonics have played a total of 41 seasons. Their first season was in 1968, and their most recent season was in 2008.
The Seattle SuperSonics last made the playoffs in 2005, when they lost the Western Conference Semifinals. They've been in the playoffs a total of 22 times in their 41 seasons.
The Seattle SuperSonics have won the NBA Finals once, in 1979.
| Year | Result |
|---|---|
| 2008 | Missed Playoffs |
| 2007 | Missed Playoffs |
| 2006 | Missed Playoffs |
| 2005 | Lost Western Conference Semifinals (Won 1 Round) |
| 2004 | Missed Playoffs |
| 2003 | Missed Playoffs |
| 2002 | Lost Western Conference First Round (Won 0 Rounds) |
| 2001 | Missed Playoffs |
| 2000 | Lost Western Conference First Round (Won 0 Rounds) |
| 1999 | Missed Playoffs |
| 1998 | Lost Western Conference Semifinals (Won 1 Round) |
| 1997 | Lost Western Conference Semifinals (Won 1 Round) |
| 1996 | Lost Finals (Won 3 Rounds) |
| 1995 | Lost Western Conference First Round (Won 0 Rounds) |
| 1994 | Lost Western Conference First Round (Won 0 Rounds) |
| 1993 | Lost Western Conference Finals (Won 2 Rounds) |
| 1992 | Lost Western Conference Semifinals (Won 1 Round) |
| 1991 | Lost Western Conference First Round (Won 0 Rounds) |
| 1990 | Missed Playoffs |
| 1989 | Lost Western Conference Semifinals (Won 1 Round) |
| 1988 | Lost Western Conference First Round (Won 0 Rounds) |
| 1987 | Lost Western Conference Finals (Won 2 Rounds) |
| 1986 | Missed Playoffs |
| 1985 | Missed Playoffs |
| 1984 | Lost Western Conference First Round (Won 0 Rounds) |
| 1983 | Lost Western Conference First Round (Won 0 Rounds) |
| 1982 | Lost Western Conference Semifinals (Won 1 Round) |
| 1981 | Missed Playoffs |
| 1980 | Lost Western Conference Finals (Won 2 Rounds) |
| 1979 | Won Finals |
| 1978 | Lost Finals (Won 3 Rounds) |
| 1977 | Missed Playoffs |
| 1976 | Lost Western Conference Semifinals (Won 0 Rounds) |
| 1975 | Lost Western Conference Semifinals (Won 1 Round) |
| 1974 | Missed Playoffs |
| 1973 | Missed Playoffs |
| 1972 | Missed Playoffs |
| 1971 | Missed Playoffs |
| 1970 | Missed Playoffs |
| 1969 | Missed Playoffs |
| 1968 | Missed Playoffs |
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