National carrier Air India has slashed its fare on all its domestic flights nearly 50 percent to attract more passengers during the lean season. The new scheme by the state-run airline has rolled out for limited period, starting at Rs 1,557 across its domestic network. The sale is on from yesterday to January 18 for a travel period between January 16 and April 30. Air India has recorded a net profit of Rs 14.6 crore in December last year due to healthy growth in both passenger and cargo revenue.