| month | day | visitor | score | home | score |
|---|
| November | 2, 1988 | Heat | | Sonics | |
| November | 5, 1988 | Suns | | Sonics | |
| November | 8, 1988 | Celtics | | Sonics | |
| November | 9, 1988 | Sonics | | Pistons | |
| November | 10, 1988 | Sonics | | Pacers | |
| November | 12, 1988 | Jazz | | Sonics | |
| November | 13, 1988 | Sonics | | Spurs | |
| November | 14, 1988 | Sonics | | Clippers | |
| November | 15, 1988 | Sonics | | Clippers | |
| November | 16, 1988 | Suns | | Sonics | |
| November | 17, 1988 | Lakers | | Sonics | |
| November | 18, 1988 | Sonics | | Heat | |
| November | 19, 1988 | Cavaliers | | Sonics | |
| November | 20, 1988 | Sonics | | Hornets | |
| November | 21, 1988 | Sonics | | Hawks | |
| November | 28, 1988 | Clippers | | Sonics | |
| November | 29, 1988 | Sonics | | 76ers | |
| December | 3, 1988 | Clippers | | Sonics | |
| December | 5, 1988 | Sonics | | Bulls | |
| December | 6, 1988 | Sonics | | Suns | |
| December | 10, 1988 | Sonics | | Lakers | |
| December | 12, 1988 | Heat | | Sonics | |
| December | 13, 1988 | Nuggets | | Sonics | |
| December | 15, 1988 | Rockets | | Sonics | |
| December | 16, 1988 | Warriors | | Sonics | |
| December | 20, 1988 | Hornets | | Sonics | |
| December | 22, 1988 | Kings | | Sonics | |
| December | 23, 1988 | Suns | | Sonics | |
| December | 25, 1988 | Sonics | | Rockets | |
| December | 28, 1988 | Sonics | | Nets | |
| December | 29, 1988 | Sonics | | Spurs | |
| January | 2, 1989 | Sonics | | Bullets | |
| January | 4, 1989 | Nuggets | | Sonics | |
| January | 5, 1989 | Sonics | | Jazz | |
| January | 6, 1989 | Sonics | | Bucks | |
| January | 10, 1989 | Warriors | | Sonics | |
| January | 11, 1989 | Blazers | | Sonics | |
| January | 13, 1989 | Sonics | | Blazers | |
| January | 17, 1989 | Sonics | | Kings | |
| January | 18, 1989 | Sonics | | Nuggets | |
| January | 19, 1989 | Sonics | | Warriors | |
| January | 23, 1989 | Sonics | | Lakers | |
| January | 25, 1989 | Bucks | | Sonics | |
| January | 27, 1989 | Pistons | | Sonics | |
| February | 1, 1989 | Kings | | Sonics | |
| February | 9, 1989 | Sonics | | Celtics | |
| February | 15, 1989 | Pacers | | Sonics | |
| February | 16, 1989 | Sonics | | Clippers | |
| February | 17, 1989 | Blazers | | Sonics | |
| February | 19, 1989 | Rockets | | Sonics | |
| February | 21, 1989 | Nets | | Sonics | |
| February | 23, 1989 | Mavericks | | Sonics | |
| February | 24, 1989 | Sonics | | Warriors | |
| March | 1, 1989 | Sonics | | Warriors | |
| March | 3, 1989 | Sonics | | Suns | |
| March | 5, 1989 | Jazz | | Sonics | |
| March | 7, 1989 | Sonics | | Cavaliers | |
| March | 8, 1989 | Mavericks | | Sonics | |
| March | 10, 1989 | Spurs | | Sonics | |
| March | 12, 1989 | Bulls | | Sonics | |
| March | 13, 1989 | Sonics | | Mavericks | |
| March | 15, 1989 | Sonics | | Knicks | |
| March | 16, 1989 | Lakers | | Sonics | |
| March | 17, 1989 | Sonics | | Blazers | |
| March | 19, 1989 | Sonics | | Jazz | |
| March | 23, 1989 | Clippers | | Sonics | |
| March | 24, 1989 | Knicks | | Sonics | |
| March | 28, 1989 | Sonics | | Kings | |
| March | 30, 1989 | 76ers | | Sonics | |
| March | 31, 1989 | Sonics | | Rockets | |
| April | 3, 1989 | Sonics | | Suns | |
| April | 5, 1989 | Sonics | | Nuggets | |
| April | 10, 1989 | Sonics | | Kings | |
| April | 11, 1989 | Lakers | | Sonics | |
| April | 14, 1989 | Bullets | | Sonics | |
| April | 15, 1989 | Sonics | | Blazers | |
| April | 17, 1989 | Kings | | Sonics | |
| April | 18, 1989 | Spurs | | Sonics | |
| April | 20, 1989 | Hawks | | Sonics | |
| April | 21, 1989 | Sonics | | Heat | |
| April | 24, 1989 | Sonics | | Mavericks | |
| April | 26, 1989 | Blazers | | Sonics | |