If you have some flexibility on departure and destination cities there are actually a fair amount of seats available on EY in May according the the KVS Tool (that's how I found my award ticket).

For example on May 20 DEL-AUH-JFK is available (EY211, EY101) as is HYD-JFK (EY275,EY101). Both in J. (as of 5/12/12).


Domestic tickets in India are not too expensive so maybe looking at BOM or HYD as alternative departure cities would yield some flights, and instead of ORD look at JFK as an option if that's an option for you.