Barcelona in late autumn or early spring is the sweet spot. You get the modernist architecture of Gaudí without the suffocating crowds, and the beach weather is mild enough for long walks along the Mediterranean. It is the perfect time to explore the Gothic Quarter and grab a quiet glass of wine in a local plaza.
When you are ready to book that $2600 trip, you can use the Citi Simplicity® Credit Card to help smooth out the cost. It offers 0% for 18 months on purchases and balance transfers from date of account opening. This lets you break your travel expenses into smaller, monthly payments while you get your trip on the calendar.
This is not a free trip; it is just a way to spread out the cost. If you still have a balance after the 18 months are up, interest will start to hit. Make sure you clear the full amount before that window closes.