O'Donoghue played junior for the St. Catharines Black Hawks of the Ontario Hockey Association. He was selected 29th overall by the Oakland Seals in the 1969 NHL Amateur Draft, and made his professional debut with the team that year. He spent parts of three seasons with the Seals, also playing for their American Hockey League affiliates.
Along with Boston Bruins defenseman Carol Vadnais, he was part of the February, 1972 trade that sent forward Reggie Leach and defensemen Rick Smith and Bob Stewart to the Golden Seals. He spent the remainder of the season in the minor leagues then signed with the rival WHA afterward. He played four seasons in the WHA, as well as three more in the minor leagues, before retiring in 1978.
In later life he ran a restaurant in California until his death from kidney cancer in 2007.

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