Booking flights online can be a cheaper and more convenient way to travel than using a travel agent. It is often possible to find great deals online that are not available through a travel agent, and booking online can save time, effort, and money. Additionally, online booking websites often provide better customer service and more options than traditional agents. Furthermore, online booking websites often have user friendly interfaces that make it easy to compare prices and find the best deals. In conclusion, booking flights online is likely to be cheaper and more convenient than using a travel agent.