While it's not usually known for being a low-cost travel destination, flights to Barcelona can be very affordable if booked at the right time – and once there, it's easy enough to keep your costs down with a few simple insider tips. The sunny city has plenty of free activities, including walking tours, so get your bearings from someone in the know, and only pay whatever you think the tour was worth at the end. "Make good use of the public transport, which is very reasonably priced if you avoid buying single-use tickets. If you're going to be staying a few days, you can pick up a T10 ticket, which gives you 10 journeys for just €10 ($12 USD), including the buses, metro, trams, and trains. Keep your distance from the tourist traps and journey a little further out to find reasonably priced bars and restaurants. And why not enjoy an expense-free afternoon at one of the numerous sandy beaches? One of the most popular would be the thriving Platja Barcelona, but be prepared for a crowd," Oliveira said.
