MADRID, April 30 (Reuters) - Spanish airport operator Aena said on Tuesday its first-quarter net profit had nearly doubled to 261 million euros ($279 million) as passenger traffic to and from one of the world's most-visited countries surpassed year-ago record levels.

The profit of Aena, which operates all Spanish airports as well as some terminals in Latin America and Britain, beat analysts expectations, which averaged 196 million euros according to an LSEG survey.

Aena had achieved a net profit of 133.6 million euros in the same period of last year.

While a 20% rise in Aena's overall revenues to 1.2 billion euros came slightly below the 22% forecast on average by analysts, its earnings before interest, taxes, depreciation and amortisation (EBITDA) rose 58%, well above the predicted 31%.

The number of passengers that arrived at Aena's terminals in Spain increased by 13% in the first quarter from a year ago to more than 60 million people.

Meanwhile, Spanish airlines expect a record summer season and are adding 13% more seats from a year ago, confident that consumers will continue to travel despite higher ticket prices and wider inflation.

Aena's passenger numbers are growing more rapidly than those of other airport operators in Europe, and the company expects to manage around 1 million per day by 2026 in all its terminals.

(Reporting by Corina Pons, edititng by Andrei Khalip)