Yatra.com is a web portal which shows you availability of rooms and seats in flights and hotels when you travel out of your hometown. It is also available in the form of an application. You need to register through your email account and you are all set to book any required service you want. They also offer discounts and ecash which help provide you benefits while bookings. I book my flight tickects from this web portal only and got 1000 rs off on my first booking. It is very easy to use and is authentic. They send you every detail you want through mails and provide proper service. It is one of the best traveling portal available nowadays.