A Turnbull government MP who charged taxpayers for flights to his own wedding has reported spending nearly $2000 for his wife to travel to a golf tournament in Queensland.

Western Australian Liberal MP Steve Irons said he attended the December 2015 Australian PGA event on the Gold Coast to study "golf tourism opportunities" - reporting the trip as "electorate business", despite representing the marginal Perth seat of Swan.

Federal Liberal MP Steve Irons also charged the taxpayer to attend Melbourne's Derby Day. Credit:Guy Magowan

The latest official travel reports from members of Parliament released this week show Mrs Irons' wife, Cheryle Irons, joined him on the trip, flying home from the tournament at a cost to taxpayers of $1875.14.

Combined with Mr Irons' own travel costs and three nights' accommodation in Coolangatta, taxpayers were charged more than $4000.