New Delhi, Nov. 14 -- SpiceJet is facing mounting operational challenges, with frequent flight cancellations and delays across the country reportedly linked to its worsening financial condition, unpaid airport dues and a shortage of crew members.

According to a report by The New Indian Express, airport authorities have restricted the financially distressed airline's operations over its inability to pay mandatory charges for using airport facilities and services.

The airline has been operating under a 'Cash and Carry' arrangement for airport charges, which requires it to clear payments before availing of services. The Civil Aviation Ministry had permitted this arrangement for SpiceJet for an extended period because of its financial diffi...