A review of travel expenses by MP' s is currently underway

Tony Burke is questioned over flying his family business class to Uluru

Christopher Pyne is also being questioned over flying his family to Sydney

After ducking questions about the appropriateness of fellow MP's travel expenses earlier today, reports have emerged that Joe Hockey jetted his entire family to Perth on business class flights.

The family of five all travelled during school holidays in 2013, costing taxpayers a whopping $14,566, The Herald Sun reported.

According to News Corp, Mr Hockey spent $340.90 on taxis around Perth and $853.69 on comcars.

The latest report on parliamentary travel spending emerged hard on the heels of allegations that Mr Hockey's colleague, Christopher Pyne, flew his family to Sydney for a Christmas holiday in 2009.

It has been revealed that Joe Hockey jetted his family to Perth in 2013 on a taxpayer funded trip costing $14,566

Mr Hockey was asked on Friday whether the family travel allowance should be scrapped.

'You've got to be precious with every dollar of taxpayers money, I've always said that,' he said.

There's a review of travel expenses underway, he said, before turning to what he described as a week of 'terrific economic data'.

'Retail sales were double market expectations for the June quarter,' he said, before later acknowledging MPs have to be precious about taxpayer dollars.

Education Minister Christopher Pyne is also being questioned over using taxpayers' money in 2009 to fly himself, his wife and his two children to Sydney for a Christmas holiday

Labor frontbencher Tony Burke is also being questioned for using taxpayers' money to fly his family in business class to Uluru in 2012

It was revealed that Christopher Pyne spent $5000 of taxpayers' money in 2009 to fly with his wife and two of his children to Sydney for a Christmas-New Year holiday.

Department of Finance documents show each return flight from Adelaide cost $1200, and he claimed two nights' travel allowance of $238 as well as $711 on Comcars.

His office told The Australian on Saturday the then opposition education spokesman held a planning day with opposition leader Tony Abbott while in Sydney.

'Neither Mr Pyne nor his family have ever seen the New Year's Eve Sydney fireworks,' it said.

Labor frontbencher Tony Burke is again in the spotlight after being criticised for claiming business class travel for his family to Uluru in 2012.

The then environment minister also spent $16,000 using one of the prime minister's jets for three days in 2010, including 'ghost flights' when no one was on board.

Labor frontbencher Gary Gray has welcomed a system review into parliamentary expenses

Mr Burke had the RAAF Challenger travel empty to pick him up from Hobart, before taking him to Newcastle, Dubbo and then back to Sydney for a series of meetings, News Corp reports.

It then returned empty to its base in Canberra, but Mr Burke's office said he had no option but to travel on the government jet because his meetings did not align with commercial flights.

Liberal MP Mal Brough refused to judge any of his colleagues for their expenses when asked on Saturday.

The former minister has taken it upon himself to publish his travel expenses on his website.

'I just want the people that have the opportunity to elect me to make that judgment call for themselves, with the facts about what myself and my family do,' he told the Seven Network.

Labor frontbencher Gary Gray welcomed the review into MPs expenses by a panel whose members include retired Labor speaker Harry Jenkins and former opposition leader Brendan Nelson.

'This review will help improve the Australian public's confidence in our parliamentary democracy, which is urgently required,' he said in a statement.