[06/08/2018 @ 1:55 PM] Old post clean-up. Removing from deal list.
Air France, KLM, and Delta have round-trip flights from Houston (IAH) to New Delhi or Mumbai (DEL/BOM) for $652-$670 with a connection. Flights from September to January. Blackout from December to mid-January. Flight may operate as a SkyTeam code-share. 7-day minimum stay required.
Note: Mumbai also has a few flights available in April.
Note: Check availability out of Air France, KLM, and Priceline. They seem to have slightly different dates and flight times.