On their webstie they say: "At Jetstar we never cancel flights on the day of departure for commercial reasons, or when we have not sold enough seats."
But in this case, they notified the cancellation the night before (so not "on the day of departure"). So my guess is that this doesnt apply. But yes, you are right, you really have to check the fine print.
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love this, in our situation, it was only a couple of hours before
then we had to find somewhere to stay over night, at our cost
and business plans for the following day were all wrecked
the reason we were told as a maintaince problem /safety problem with your aircraft
