Hi, we just bought the return tickets for me and my wife from Chicago to New
Delhi (AIR INDIA), for the second person you are paying only the taxes and
surcharges.
This scheme is valid on full IATA published fares in all classes for both
one way and round trip travel for outbound travel up to 31st March 2012.
Passengers availing of the scheme are required to travel on their outbound
journey together and may undertake the return travel separately.
Link: http://home.airindia.in/SBCMS/Webpages/Companion-Free-Scheme.as