To contact Frontier airlines en español, you can call their Spanish-talking client support. You can also visit the Frontier Airlines site and select "Español" from the language dropdown menu in the upper right corner of the page. From that point, you can get to data about flights, baggage, registration, and more in Spanish.
Additionally, Frontier Airlines has client support agents who can help you in Spanish via their social media accounts. You can send them a message on Facebook or Twitter with your inquiry or concern, and they will answer you in Spanish. Overall, Frontier Airlines offers a few choices for Spanish-talking clients to reach out to them, whether it's via telephone, on the web, or through social media. To know more about it read the full Blog.