A Spanish charter airline Iberojet offers very cheap non-stop flights from Madrid to San Jose, Costa Rica available for €370. The base fare is including all airport taxes and fees, onboard meals and handbags. Checked luggage for an additional fee. Currently, the cheapest deals are in Q1 of 2022 which is the main tourist season and the best time to explore this country in Central America.
Flying from: Madrid
Flying to: Havana
Travel period: February to June 2022
Max stay: 12 months
Book by: 30th of November
Booking sample of cheap non-stop flights from Spain to Costa Rica for €370! As per the above link, you would depart from Madrid to San Jose on the 5th of March. Inbound flight from Central America a back to Spain on the 19th fo March 2022.