A Turnbull government MP is facing questions over a series of taxpayer funded travel claims, including more than $2000 for flights to his own wedding in Melbourne.

Western Australian Liberal MP Steve Irons charged taxpayers travel costs of $1346 for a flight on October 18, 2011, three days before he was married at Melbourne's Crown Casino.

The West Australian reported on Monday that following the October 21 ceremony, Mr Irons charged taxpayers $911 for a return flight to Perth on October 25.

The Swan MP said the money had been repaid to the Department of Finance after "a self-audit" of travel expenses in his office.