The 1979–80 IHL season was the 35th season of the International Hockey League, a North American minor professional league. Ten teams participated in the regular season, and the Kalamazoo Wings won the Turner Cup.
North Division 
South Division
| North Division | GP | W | L | T | GF | GA | Pts |
|---|---|---|---|---|---|---|---|
| Kalamazoo Wings | 80 | 45 | 26 | 9 | 366 | 274 | 99 |
| Saginaw Gears | 80 | 43 | 27 | 10 | 349 | 306 | 96 |
| Port Huron Flags | 80 | 38 | 26 | 16 | 352 | 300 | 92 |
| Flint Generals | 80 | 35 | 32 | 13 | 298 | 316 | 83 |
| Muskegon Mohawks | 80 | 29 | 43 | 8 | 317 | 330 | 66 |
| South Division | GP | W | L | T | GF | GA | Pts |
|---|---|---|---|---|---|---|---|
| Fort Wayne Komets | 80 | 40 | 27 | 13 | 343 | 311 | 93 |
| Toledo Goaldiggers | 80 | 28 | 34 | 18 | 293 | 345 | 74 |
| Milwaukee Admirals | 80 | 29 | 41 | 10 | 327 | 402 | 68 |
| Grand Rapids Owls | 80 | 27 | 41 | 12 | 327 | 340 | 66 |
| Dayton Gems | 80 | 28 | 45 | 7 | 307 | 355 | 63 |
| Turner Cup-Quarterfinals | Turner Cup-Semifinals | Turner Cup-Final | ||||||||||||
| N1 | Kalamazoo Wings | 4 | ||||||||||||
| N5 | Muskegon Mohawks | 1 | ||||||||||||
| N1 | Kalamazoo Wings | 4 | ||||||||||||
| N3 | Port Huron Flags | 2 | ||||||||||||
| N3 | Port Huron Flags | 4 | ||||||||||||
| N4 | Flint Generals | 1 | ||||||||||||
| N1 | Kalamazoo Wings | 4 | ||||||||||||
| S1 | Fort Wayne Komets | 2 | ||||||||||||
| S1 | Fort Wayne Komets | 4 | ||||||||||||
| S2 | Toledo Goaldiggers | 0 | ||||||||||||
| S1 | Fort Wayne Komets | 4 | ||||||||||||
| N2 | Saginaw Gears | 1 | ||||||||||||
| N2 | Saginaw Gears | 4 | ||||||||||||
| S3 | Milwaukee Admirals | 0 | ||||||||||||
