A 24 hour strike by ground staff and baggage handlers has forced Jetstar to cancel almost 50 flights today.
The workers have taken industrial action over pay demands, guaranteed hours and stable rosters.
More than a dozen of those affected flights are between Sydney and Melbourne, but International flights will not be affected.
Jetstar offered travellers refunds or the ability to shift their flight plans.
Jetstar has been locked in a dispute over proposed new enterprise agreements for both its ground crew and pilots, with chief executive Gareth Evans calling the union’s demand for a 12 per cent pay increase “ridiculous in the current circumstances”.
The airline has offered workers a pay rise of 3 per cent.
“Frankly, this is part of their broader 2020 strategy against airlines and airports, and they’re using our people as a pawn in this greater industrial action,” he told the ABC.