Airport planned in southern zone

(update November 2018)


In 2004 the Government of then President Oscar Arias Sánchez decided that it wished to build a new airport in the southern zone, near Sierpe south of Cortès. An area of 1500 hectares (6 kilometers by 2,5 kilometers) was considered, substantially larger than the airport Juan Santamaría of San José and the majority of other latin american airports. Extensive studies were commenced on winds, meteorology, soil, impact on fauna, archeology, seismology, sound hindrance, etc..

In 2009 the Ministry of Transport approved the Airport Master Plan prepared by the International Organisation for Civil Aviation and asked President Oscar Arias to issue a Declaration of Public Interest which would allow for the purchase of land for the new airport. Meanwhile, in June 2007, one farm nr 10 of 267 hectares (of the four farms nr 8, 9, 10 and 11 to be made available) had already been transferred to Civil Aviation.

In February 2010, EALA and a group of other costarican NGO's asked President Oscar Arias not to issue the Declaration of Public Interest and leave it to the new Government which took office in May, 2010 to re-assess the need for the airport. In September 2010 the Directorate of Civil Aviation agreed to these requests but unfortunately on 16 October, 2010 President Laura Chinchilla isued the Declaration of Public Interest declaring the project of national convenience and in the public interest.

In 2013, an Environmental Impact Study of 2000 pages was produced. Since then, it became quiet around the plan. Subsequently, the Solis Government started making plans for another major airport near the town Orotina.

Fortunately, after taking office in August 2018 the current President Carlos Alvarado has declared not to give the plan for another airport in Costa Rica any priority. 

The reasons why EALA questioned that the airport in Sierpe was desirable were the following:

In April 2010 the Center for Responsible Travel (CREST) in Washington, U.S.A. published a comprehensive report "Impact of Tourism Related Development on the Pacific Coast of Costa Rica" which supported our criticism of the airport plans:

" A number of experts argue that a better strategy is to upgrade Palmar Sur for expanded domestic and regional flights, rather than international carriers, to help strengthen nature and culture based ecotourism in the Osa Peninsula. Our study found that this latter style of tourism has provided the greatest benefits to Costa Rican communities and to the environment, and was largely sacrificed in the Guanacaste development experiment."

The second of Ten Policy Recommendations of the report states:

" 2. Abandon plans for another international airport and instead upgrade Palmar Sur as a regional airport, while providing investment and incentives to support nature-based ecotourism."

Like in many other Latin American countries, environmental problems continue to affect the life of the Costa Ricans and their fauna and flora, for instance the contamination of the Tarcoles river with untreated San José sewage and the Central Valley aquifers, the air deteriorating quality in San José, illegal logging, uncontrolled disposal of solid wastes, etc. On the other hand, successive Costa Rican governments have made great achievements by protecting many natural areas with rich biodiversity now attracting annually millions of foreign tourists, and by prohibiting oil exploration and putting a halt to open-pit goldmining.

In July, 2007, now ex-President Oscar Arias, winner of the 1987 Nobel Peace Price, declared the "Peace with Nature" initiative: 12 commissions were formed with 10 members each to propose specific actions in different environmental fields. Various costarican environmental ngo's including FECON ( have pointed out that very few concrete measures have resulted from the initiative. In our view, it is difficult to see the decision to construct a new international airport in a largely unspoilt environment as a peaceful act towards nature.

Does Costa Rica really want these airplanes to be flying low over the Osa Peninsula, National Park Ballenas and the Sierpe mangroves?