Austria will order airlines to display full airfares in their advertising, curbing a practice popular with budget airlines of promoting flights at raw prices and hiding taxes, fees and supplements in the small print.

The rule, put before parliament by Economics Minister Martin Bartenstein on Wednesday, will require all advertisements in newspapers, magazines, posters or catalogues to display the end price including all fees and taxes, he said.

"This is a key measure to introduce pricing transparency," Bartenstein said in a statement. "Now the customer knows from the outset what he will have to pay for his travel."

The government-backed proposal is expected to be approved by Austria's parliament, which is controlled by Chancellor Wolfgang Schuessel's center-right coalition.

Budget airlines including Ryanair, SkyEurope and easyJet fly from Bratislava in Slovakia, which is an hour's drive away from Vienna, competing with partly state-owned Austrian Airlines and catering to the Austrian market.

Ryanair also flies from the Austrian airports of Linz, Graz and Salzburg.