A Turnbull government MP under fire for using parliamentary perks to attend his own wedding is facing fresh questions after it was revealed taxpayers also footed the bill for his wife to fly home with him after the ceremony.

Liberal MP Steve Irons charged taxpayers $1346 for a flight to Victoria to wed Melbourne-based real estate agent Cheryle Street at Crown Casino in October 2011, spending a further $912 for his return flight home about one week later.

The member for the Perth-based seat of Swan said on Monday the charges had been repaid after "a self-audit" of travel expenses.

But a further examination of travel documents shows Mr Irons was accompanied by his new wife on the flight home to Perth, also at a cost to the taxpayer of $912.