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| 4 Stanley Cup championship seasons: 1979-80, 1980-81, 1981-82, 1982-83 |
| Last Stanley Cup championship: 1982-83, 42 seasons ago |
| Best finish: |
| beat Philadelphia in Stanley Cup Finals in 1979-80 season |
| beat Minnesota in Stanley Cup Finals in 1980-81 season |
| beat Vancouver in Stanley Cup Finals in 1981-82 season |
| beat Edmonton in Stanley Cup Finals in 1982-83 season |
| TEAM | SEASON | RECORD | PTS | DIV STAND | CNF STAND | PLAYOFFS |
| NY Islanders | 1972-73 | 12-60-6 | 30 pts | 8th East Div | missed playoffs | |
| NY Islanders | 1973-74 | 19-41-18 | 56 pts | 8th East Div | missed playoffs | |
| NY Islanders | 1974-75 | 33-25-22 | 88 pts | 3rd Patrick | 8th NHL | WNYR WPit LPhi |
| NY Islanders | 1975-76 | 42-21-17 | 101 pts | 2nd Patrick | 5th NHL | WVan WBuf LMtl |
| NY Islanders | 1976-77 | 47-21-12 | 106 pts | 2nd Patrick | 4th NHL | WChi WBuf LMtl |
| NY Islanders | 1977-78 | 48-17-15 | 111 pts | 1st Patrick | 3rd NHL | bye LTor |
| NY Islanders | 1978-79 | 51-15-14 | 116 pts | 1st Patrick | 1st NHL | bye WChi LNYR |
| %NY Islanders | 1979-80 | 39-28-13 | 91 pts | 2nd Patrick | 5th NHL | WLA WBos WBuf WPhi |
| %NY Islanders | 1980-81 | 48-18-14 | 110 pts | 1st Patrick | 1st NHL | WTor WEdm WNYR WMin |
| %NY Islanders | 1981-82 | 54-16-10 | 118 pts | 1st Patrick | 1st Wales | WPit WNYR WQue WVan |
| %NY Islanders | 1982-83 | 42-26-12 | 96 pts | 2nd Patrick | 4th Wales | WWsh WNYR WBos WEdm |
| NY Islanders | 1983-84 | 50-26-4 | 104 pts | 1st Patrick | 1st Wales | WNYR WWsh WMtl LEdm |
| NY Islanders | 1984-85 | 40-34-6 | 86 pts | 3rd Patrick | 6th Wales | WWsh LPhi |
| NY Islanders | 1985-86 | 39-29-12 | 90 pts | 3rd Patrick | 4th Wales | LWsh |
| NY Islanders | 1986-87 | 35-33-12 | 82 pts | 3rd Patrick | 6th Wales | WWsh LPhi |
| NY Islanders | 1987-88 | 39-31-10 | 88 pts | 1st Patrick | 3rd Wales | LNJ |
| NY Islanders | 1988-89 | 28-47-5 | 61 pts | 6th Patrick | --- Wales | missed playoffs |
| NY Islanders | 1989-90 | 31-38-11 | 73 pts | 4th Patrick | 8th Wales | LNYR |
| NY Islanders | 1990-91 | 25-45-10 | 60 pts | 6th Patrick | --- Wales | missed playoffs |
| NY Islanders | 1991-92 | 34-35-11 | 79 pts | 5th Patrick | --- Wales | missed playoffs |
| NY Islanders | 1992-93 | 40-37-7 | 87 pts | 3rd Patrick | 6th Wales | WWsh WPit LMtl |
| NY Islanders | 1993-94 | 36-36-12 | 84 pts | 4th Atlantic | 8th East | LNYR |
| NY Islanders | 1994-95 | 15-28-5 | 35 pts | 7th Atlantic | --- East | missed playoffs |
| NY Islanders | 1995-96 | 22-50-10 | 54 pts | 7th Atlantic | --- East | missed playoffs |
| NY Islanders | 1996-97 | 29-41-12 | 70 pts | 7th Atlantic | --- East | missed playoffs |
| NY Islanders | 1997-98 | 30-41-11 | 71 pts | 4th Atlantic | --- East | missed playoffs |
| NY Islanders | 1998-99 | 24-48-10 | 58 pts | 5th Atlantic | --- East | missed playoffs |
| NY Islanders | 1999-00 | 24-48-9-1 | 58 pts | 5th Atlantic | --- East | missed playoffs |
| NY Islanders | 2000-01 | 21-51-7-3 | 52 pts | 5th Atlantic | --- East | missed playoffs |
| NY Islanders | 2001-02 | 42-28-8-4 | 96 pts | 2nd Atlantic | 5th East | LTor |
| NY Islanders | 2002-03 | 35-34-11-2 | 83 pts | 3rd Atlantic | 8th East | LOtt |
| NY Islanders | 2003-04 | 38-29-11-4 | 91 pts | 3rd Atlantic | 8th East | LTB |
| NY Islanders | 2005-06 | 36-40-6 | 78 pts | 4th Atlantic | --- East | missed playoffs |
| NY Islanders | 2006-07 | 40-30-12 | 92 pts | 4th Atlantic | 8th East | LBuf |
| NY Islanders | 2007-08 | 35-38-9 | 79 pts | 5th Atlantic | --- East | missed playoffs |
| NY Islanders | 2008-09 | 26-47-9 | 61 pts | 5th Atlantic | --- East | missed playoffs |
| NY Islanders | 2009-10 | 34-37-11 | 79 pts | 5th Atlantic | --- East | missed playoffs |
| NY Islanders | 2010-11 | 30-39-13 | 73 pts | 5th Atlantic | --- East | missed playoffs |
| NY Islanders | 2011-12 | 34-37-11 | 79 pts | 5th Atlantic | --- East | missed playoffs |
| NY Islanders | 2012-13 | 24-17-7 | 55 pts | 3rd Atlantic | 7th East | LPit |
| NY Islanders | 2013-14 | 34-37-11 | 79 pts | 8th Metropolitan | --- East | missed playoffs |
| NY Islanders | 2014-15 | 47-28-7 | 101 pts | 3rd Metropolitan | 5th East | LWsh |
| NY Islanders | 2015-16 | 45-27-10 | 100 pts | 4th Metropolitan | 7th East | WFla LTB |
| NY Islanders | 2016-17 | 41-29-12 | 94 pts | 5th Metropolitan | --- East | missed playoffs |
| NY Islanders | 2017-18 | 35-37-10 | 80 pts | 7th Metropolitan | --- East | missed playoffs |
| NY Islanders | 2018-19 | 48-27-7 | 103 pts | 2nd Metropolitan | 4th East | WPit LCar |
| NY Islanders | 2019-20 | 35-23-10 | 80 pts | 5th Metropolitan | 7th East | WFla WWsh WPhi LTB |
| NY Islanders | 2020-21 | 32-12-7 | 71 pts | 4th East Div | WPit WBos LTB | |
| NY Islanders | 2021-22 | 37-35-10 | 84 pts | 5th Metropolitan | --- East | missed playoffs |
| NY Islanders | 2022-23 | 42-31-9 | 93 pts | 5th Metropolitan | 7th East | LCar |
| NY Islanders | 2023-24 | 39-27-16 | 94 pts | 3rd Metropolitan | 7th East | LCar |
| NY Islanders | 2024-25 | 35-35-12 | 82 pts | 6th Metropolitan | --- East | missed playoffs |