|Venue(s)||Summerside, Prince Edward Island|
|Champions||Thunder Bay Flyers (1st title)|
|Runner-up||Summerside Western Capitals|
|Third place||Moncton Hawks|
|Fourth place||Vernon Lakers|
|Scoring leader(s)||Greg Johnson (Thunder Bay)|
|MVP||Todd Hendersen (Thunder Bay)|
The Thunder Bay Flyers were coached by Dave Siciliano, and won the United States Hockey League regular season and playoffs in 1989. The Flyers began the Canadian playoffs undefeated in eight games with series victories versus the Sudbury Cubs and the Pembroke Lumber Kings to win the Dudley Hewitt Cup. Siciliano recalled that the Flyers were not given respect in advance of the 1989 Centennial Cup, and said that "the host Summerside team commented at the coaches press conference that Thunder Bay couldn't be very strong since they played in an American-based league". During the round-robin stage of the tournament, the Flyers earned wins versus the Vernon Lakers and Moncton Hawks, and lost to the Summerside Western Capitals. The Flyers earned a berth in the cup finals based on goal difference among three teams tied for first place, then defeated Summerside by a 4–1 score in the final game to win the Centennial Cup. The Centennial Cup championship was the first for any team from Northwestern Ontario.
|1||# Thunder Bay Flyers||USHL||Dudley Hewitt Cup||2-1||18||9|
|2||x Moncton Hawks||MVJHL||Callaghan Cup||2-1||13||11|
|3||x Summerside Western Capitals||IJHL||Host||2-1||13||14|
|4||Vernon Lakers||BCJHL||Abbott Cup||0-3||8||18|
Note: # - denotes team advanced to the final.
Note: x - denotes teams who have advanced to the semi-final.
- Thunder Bay Flyers defeated Vernon Lakers 8-2
- Summerside Western Capitals defeated Thunder Bay Flyers 5-4
- Moncton Hawks defeated Vernon Lakers 5-2
- Moncton Hawks defeated Summerside Western Capitals 6-3
- Thunder Bay Flyers defeated Moncton Hawks 6-2
- Summerside Western Capitals defeated Vernon Lakers 5-4 double overtime
Semi and FinalsEdit
|Semi-finals||Centennial Cup Finals|
|1||Thunder Bay Flyers||4|
|3||Summerside Western Capitals||1|
|3||Summerside Western Capitals||3|
Please note: Semi- Final was won in 14:51 of 3rd overtime period
- Most Valuable Player: Todd Hendersen (Thunder Bay Flyers)
- Top Scorer: Greg Johnson (Thunder Bay Flyers)
- Most Sportsmanlike Player: Cam Sylven (Vernon Lakers)
- Greg Johnson (Thunder Bay Flyers)
- Ken Murchison (Summerside Western Capitals)
- Jason Bortolussi(Thunder Bay Flyers)
- Darin Baker (Moncton Hawks)
Roll of League ChampionsEdit
- Imrie, Diane (April 12, 2018). "Reliving the years when Flyers were buzzing". The Chronicle-Journal. Thunder Bay, Ontario. Retrieved August 7, 2021.
- "National Jr. A Championship Rewind: Thunder Bay Flyers celebrated initial national Jr. A title 30 years ago". Canadian Junior Hockey League. May 19, 2019. Retrieved August 8, 2021.