If you want asummer in the name of the sun and the beautiful sea (beautiful sea to be precise) and you have spotted the Grecia, my advice is to take a look at the flights to the island of Rhodes and precisely to the airport of Rhodes-Diagoras which is approximately 15km from the city center. Not too far away then.
THEairport is definitely small, has only one terminal and a freight yard, where numerous low cost airlines operate. The routes are all seasonal, certainly you will not have to be afraid of getting lost in this small airport, you will already anticipate the calm and peace of a holiday in Greece from the arrival at the airport.
Among the low cost airlines that operate here and therefore may interest you to book any low cost flights there are Ryanair flying from Barcelona, but also Easyjet flying from Madrid e Aegean Airlines from Barcelona.
If you have decided that a low cost holiday in Greece this year is what you want then you just have to rely on logitravel for holidays in Rhodes so that you can find the room and hotel that you like best directly on the sea or in the hinterland of Rhodes Island.