As we have talked about the main difference already. A travel agent only plans or organizes the trip. He does not accompany travelers or tourists. If he’s working under a travel agency then he plans everything out for the tourists. Moreover, a travel agent help the tourists in buying tickets, telling them about promotional offers on ticket purchase. Some travel agents are also private retailers. They advertise various hotels, places, resorts of different counties or cities to their customers. For this, they charge money, of course. They even pay services to the travelers on behalf of all these hotels, resorts or even rent-a-car services. So, they actually sell products on behalf of suppliers. They even tell the travelers about discount offers.
There are specialized tour operators as well. Like for one distinct country, there will be a specialized tour operator, who knows almost everything about that place. Tour operate also supply travelers with a complete package of residency, transportation and even flight. So, tour operators basically create pre-packages holidays for the travelers. So, a tour operator actually plans out the tour or holiday. He book tickets, a hotel, destinations, flight, transportation and even food! You can also ask for a tour guide. Their responsibility is to provide your vacation with all the necessities.