The planned Luís de Camões airport is situated on flood-prone land along the Tagus River, raising concerns about its viability and safety. The site is the most expensive option, potentially costing the state between 25 billion and 35 billion euros. Recent storms have highlighted the risks associated with this location, prompting experts like Paulino Pereira to suggest relocating the airport to safer areas such as Rio Frio, Montijo, or Alcochete. Engineering solutions to mitigate flooding risks would require significant earth movement, making the project even more costly and complicating access routes, which are also vulnerable to flooding.