Ryanair has been rapped by the Advertising Standard Authority (ASA) over a "free tickets" offer.
Ryanair offered three million free tickets
The airline advertised three million free tickets, as long as passengers paid taxes and other charges.
The ASA said the advert misled, because the free ticket offer did not apply on Fridays and at some peak travel times.
But Ryanair said the advert was not misleading, as it stated the offer excluded major sporting events and holiday periods.
The airline added that the offer's terms and conditions were set out on its website and about 98% of its passenger bookings were made online.
Nevertheless, the ASA concluded the advert was "misleading" and told the firm to make clear "all significant exclusions to offers in the small print of future advertising".