Cheap air travel for babies and toddlers could soon be a thing of a past.
Currently, most airlines allow children young enough to sit on their parent's lap during the flight to fly free of charge - or for a nominal fee, of less than 10 of the full adult fare, Bloomberg reports.
Laura, 33, who was flying from Sao Paulo to Rio de Janeiro with her husband, their two-year-old and their four-month-old baby, told Bloomberg: "They can't bring their own bag, they can't even eat the food, so why charge at all for babies? Traveling with kids is difficult."
After meeting with airlines and consumer protection groups, the Brazil's National Civil Aviation agency, Anac, is considering the proposal. It will be submitted for public opinion in the coming months and the final regulation will be approved before the end of 2016.
A spokesman for Brazilian airline association, Abear, said: "It's up to the companies to decide their strategy. This is about deregulation. Airlines want to be able to offer the best service, and those wanting better service should pay more."
UK carrier easyJet currently charge a fixed fee of £22 for children under two to travel on their parents' laps, while British Airways charge parents 10 per cent of the adult fare - or a child fare if the child has their own seat.
It's not clear whether British carriers will adopt a 'baby tax' if the Brazilian proposal is approved.
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