Indian Airlines' Discover India plan offers 21 days of unlimited travel and is less economic than single tickets, but buy them en bloc with confirmed reservations that you should reconfirm at each new airport.
Buying single tickets is cheaper, but ends up being a bigger hassle.
mnli hypothesis: Buying single tickets is cheaper, but ends up being a bigger hassle. premise: Indian Airlines' Discover India plan offers 21 days of unlimited travel and is less economic than single tickets, but buy them en bloc with confirmed reservations that you should reconfirm at each new airport.