Travel agency is a lucrative business, however, it is expensive to start. How much money you need to establish a travel agency depends on your own market conditions, however, in my home country you might have to invest over $20 K, which is quite huge amount for a business. You need this kind of amount to for registration fees, licensing fees, rent, furniture, staff salary, operational costs, etc. However, a better solution is to start an online travel agency. You can operate from your work and work with virtual assistants instead of full time staff, which will eliminate your expenses by more than 70 percent.