The boyband split in 2012 after 14 years together, but Egan has said that the band could reform one day, reported Now magazine.
"I'd like to think I'll be on stage again with Westlife but it definitely won't be in the next five years," Egan said.
However, the 'I'm A Celebrity' champion admitted that family could mean a comeback never happens.
"If it's in the next 10 years I'd be shocked. I could be sitting in Ireland with another baby next year and I might not want to be in the industry any more.
The 34-year-old singer said that he has kept in touch with all other members of Westlife, especially Brian McFadden, who left the group in 2004 at the height of their fame.
"Oddly enough, I probably have more conversations with Brian McFadden than anyone else. He was amazing and so supportive when I was in the jungle. We text all the time," Egan said.