Aviation

The Airports Authority of India or AAI under the Ministry of Civil Aviation is responsible for creating, upgrading, maintaining and managing civil aviation infrastructure in India. It is the only and most important authority which provides all the facilities related to safe Operations at airports and en-route. Those working with AAI have the chance of national and international exposures. Indian Airports have now started getting recognition on a global platform and it is all due to AAIs efforts. AAI has also initiated a new project called GAGAN in association with ISRO to augment the Navigational facilities in India. Covering from Australia to South Africa. It provides Air traffic management (ATM) services over Indian airspace and adjoining oceanic areas. It also manages a total of 125 Airports, including 18 International Airports, 7 Customs Airports, 78 Domestic Airports and 26 Civil enclaves at Military Airfields. AAI also has ground installations at all airports and 25 other locations to ensure safety of aircraft operations. AAI covers all major air-routes over Indian landmass via 29 Radar installations at 11 locations along with 700 VOR/DVOR installations co-located with Distance Measuring Equipment (DME). 52 runways are provided with Instrument landing system (ILS) installations with Night Landing Facilities at most of these airports and Automatic Message Switching System at 15 Airports.

The upper age limit for Freshers in cabin crew profile is 27 years.
You are under the limit but you will be left with less time to apply and get placed with the airlines.
In general Candidate Profile for Freshers for cabin crew is as under :
Age:Between 18 and 27 years
Minimum Height:Men - 170 cms and Women - 157 cms
Weight:In proportion to height
Educational Qualification:HSC (10 + 2). Candidates who are appearing for their HSC examinations can also apply
Physical features:Pleasing personality, clear complexion (scars, pimples and blemishes not acceptable) and good eyesight
Marital Status:Unmarried
Language skills:Fluency in English and Hindi. Proficiency in a foreign language will be an added advantage.
Interactive skills:Excellent communication and good interpersonal skills
Nationality:Indian citizens only
Passport:Must possess a valid Indian passport or should have applied for a passport
Mandatory Documentation :Must possess a Pan Card and Aadhaar Card
So that becomes very clear that it merely requires some grooming to get the job of a cabin crew. They don't demand much from candidates.
You should be interpersonally sound and capable to handle people from different cultures.
Cabin crew is the face of the airline. Coz they face the passengers for the first time.
Foreign languages like German, French, Russian, Arabic, Chinese and Japanese, Can allow you to get an edge over others.
As this allows the airline to roster you on routes where such languages are spoken.

You should also be aware that the cost of CPL Training is dependent on the type of aircraft you choose to get trained on:
Cessna 152 - Rs.8000-9000 Per Hour
Cessna 172 - Rs.10000-12000 Per Hour
P-16 - Rs.17000-18000 Per Hour
Etc.
And any candidate who gets enrolled for this professional training requires to complete 200 hrs of flying, in order to get his/her CPL issued.
Hence the total cost including accommodation + food goes around 30-40Lakhs.
IGRUA & NFTI are two premiere institutions in India who also have tie-up with international TRTO CAE.
Flying is taught by flying schools and not by universities as CPL is a professional training as I've already mentioned above and not a degree course.
Jobs are CPL are opening up nowadays as the Aviation sector is on a steady growth. If you remain in good touch with your books and constantly keep applying to vacancies as and when announced you may get a job as soon as 6 months after completion.