Unite union joint leader Derek Simpson has said that another strike ballot of British Airways cabin crew will be held.
Mr Simpson said that, despite the union trying "very hard" to reach a settlement with the airline, the sticking point was the removal of travel concessions from those who have taken action.
Union members walked out for the 22nd day on Wednesday in the long-running dispute.
"It makes you wonder why British Airways is continuing to make this an issue. We are still trying very hard to get a settlement, but Willie Walsh, having put himself in a corner, is desperate not to settle," Mr Simpson said.
"There will be another ballot and the outcome of that will determine what we do."
Mr Simpson repeated his belief that the BA boss wanted to "break" the union or achieve "regime change" at Bassa, the branch which represents cabin crew.