Aviation The secret of SpiceJet’s consistently high occupancy rates Updated : November 21, 2018 12:10 PM IST Over the past few quarters, Spicejet has also consistently declared the higher RASK (revenue per available seat kilometer) and higher average fares than competitor IndiGo, India’s biggest airline. The future of successful airline operations will depend on the ability to keep costs as low as possible, fares as low as possible and find routes where competition stays out. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.