Bankrupt discount carrier Spirit Airlines ceased operations on Saturday, the industry’s first casualty linked to the Iran war, after failing to secure creditor support for a US government bailout plan.

The collapse of the carrier following a doubling in jet fuel prices during the two-month-old Iran war will cost thousands of jobs. It is a blow to US President Donald Trump, who had proposed US$500 million to save Spirit despite opposition from some of his closest advisers and many Republicans in Congress.

No US carrier of Spirit’s size – it accounted for ‌5 per cent of US flights at one point – has liquidated in two decades. Spirit helped keep fares lower in markets where it competed against major carriers.

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