DAVID KOENIG10:46, Aug 04 2021 Spirit Airlines cancelled nearly half its schedule for Tuesday, the third straight day of extremely high cancellation numbers at the US budget airline. By early afternoon, the low-cost carrier had cancelled about 320 flights, or 47 per cent of its schedule, according to the FlightAware tracking service. Dozens more flights were late. The blame appeared to lie at least partly with a technology outage affecting crew scheduling. American Airlines had cancelled nearly 300 flights by early afternoon Tuesday, but it is much larger than Spirit, and those flights amounted to a less-alarming 9 per cent of its schedule. About three-fourths of the American cancellations appeared to be due at least partly to a lack of pilots, according to a company log.