Booking Cheap Flights
- Kiwi I love Kiwi for multi-carrier searching. You will get best price through this booking site! I use it for all my flights these days.
- Indigo I always prefer Indigo.
Booking Cheap Hotels
Hotels Combined. It is awesome search engine for discounted hotels worldwide. They have a large number of database & compare prices from all the major booking sites.
Booking Cheap Hostels
Zostel is one of the best Hostel chain in India. I really prefer Zostel where it is available.
Into the unknown It is presently only at Rishikesh, India. Good Hostel and Nice staff.
Apart from that you can find CouchSurfing and find your best staying option.