Mba in aiport Management is very niche Specialization and has ome limited opportunities in India with roles InAirpirt handling, Inflight Management, Cabin Crew and Logistics handling, Strategy analysis , Security manager. Average salary is normalized at around 5lacs per annum. However, Markering has abundant job opportunities in plethora of sectors and has scope in international markets with average salary of 7Lpa from varuous Bschools In India. Marketing is the mother of MBA and has beenn limelight due to its various subfields. So Marketing is best Cost Alternative.

MBA in Airport management and MBA in Marketing are 2 different fields.

MBA in airport management is specifically in airport hospitality specialization whereas marketing in general can cover all marketing aspects. So only if you are sure of the airline and airport line area of interest then only move further in this field. A career in aviation management offers opportunities to travel, meet new people and gain new experiences in all parts of the world.  Some of the specializations you will study are Airport operations management, Airport support services and facilities, Airport financial management, Air traffic management and control systems International airports, airlines and carrier operations management.

Kasturi Institute of Management Studies, Kasturi Group, Coimbatore provides MBA in  Airlines and Airport Management.

Marketing is perhaps the most integral function in modern day businesses to help connect with the end consumers and gain visibility, thereby making MBA in Marketing one of the most preferred postgraduate courses. While there are a number of specific areas of marketing (which are explored in the career options tab) an MBA in marketing doesn't limit the degree holder to pursuing marketing careers alone. The skillset can be put towards dozens of other career options, from consulting to entrepreneurial management. Some of the domains you will study under this branch are:
Marketing management
Operations management
Marketing channels strategies
Consumer and brand insight strategy
Internet, technology, retail, digital, sports, and other specialized marketing fields
Forecasting, modelling, and marketing strategy
Some of the colleges under marketing specialization are:
IIMs
SP Jain
IMT Ghaziabad
Xavier Ranchi
KIIT University

Hope this helps you to a good extent.
Good luck.