Hamonic, 29, has three goals and nine assists in 50 games this season.
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The Flames defender said in a statement on Twitter that his decision centered on the fact that his daughter had contracted a very serious respiratory virus last year.
“Because of what my daughter has already gone through and the concerns that she may have about COVID-19, I have decided to retire and request leave of absence from the Calgary Flames for the rest of the playoffs,” said Hamonic.
The Flames will face the Winnipeg Jets in the best of five games in the series starting August 1 in Edmonton.
“Travis explained that due to family considerations he made the difficult decision not to participate in the playoffs and the Stanley Cup qualifiers,” Flames general manager Brad Treliving said in a statement.
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