I travel to India frequently and there is no way a round trip to India should cost $2100. Most airlines do not release fares more than 6 months in advance Once all airlines release their prices, they will compete to offer the best price.

I suggest you wait till June/July before buying your ticket. Buy the ticket from the US to Bombay/Delhi. Then use makemytrip.com or yatra.com to book travel domestically within India.