Airports that would be connected under Ude Desh ka Aam Naagrik include Bhatinda, Puducherry, Shimla
Levy for up to 1,000 km of a scheduled flight will be Rs 7,500, Rs 8,000 for a 1,000-1,500-km flight
UDAN provides for various incentives to airlines with fares for one-hour flights capped at Rs 2,500
Govt said it has received 20 registrations so far under UDAN bidding
The move would push airfares slightly higher as airlines are expected to pass on the burden to fliers
Concerns remain on possible legal challenges to cross-subsidising from airlines
For 50% of the seats of flights under UDAN, the fare cap will be Rs 2,500, and rest will be market-based pricing