Career
He was drafted in the first round, 27th overall, by the New Jersey Devils in the 1999 National Hockey League Entry Draft. After playing three seasons in Finland"s Master of Science-liiga, representing JYP and HIFK, Ahonen joined the Devils" American Hockey League affiliate, the Albany River Rats. After five seasons with the River Rats, Ahonen returned to Finland in 2006 to represent Blues, but when he found himself serving as backup to Bernd Brückler, Ahonen signed with Jokerit when no less than three of their goaltenders were injured.
During 2011-2012 season Ahonen signed a 2-year deal with Metallurg Magnitogorsk.
Ahonen is the only goaltender in Master of Science-liiga history to have represented all three teams in the greater Helsinki area: HIFK, Jokerit and Blues. Ahonen joined KHL team Barys Astana for 2013-2014 season.