A thirsty traveller has lost a legal case against Emirates airline, after claiming she collapsed on a long-haul flight as a result of being denied enough water.

Lina Di Falco, 54, now faces potential costs running into hundreds of thousands of dollars after failing to get compensation from the airline giant.

Lina Di Falco, leaving court after an earlier hearing, says Emirates failed to provide her with water on a flight from Melbourne to Dubai. Credit:AAP

Ms Di Falco sued the airline for damages in the Victorian Supreme Court, claiming the denial of adequate water caused her to faint and fall, hurting her ankle on the March 2015 flight from Melbourne to Dubai.

The mother told the trial the injury caused her constant pain, forced her to take two months off work, deprived her of doing the things she loved and led to her marriage breakdown.