Use the Frontier Airlines en Español option to contact customer support for Frontier. This is Frontier Airlines' Spanish-language customer support number. You will be put in touch with a representative when you call Frontier Airlines en Espanol, and they will be able to help you with any concerns you may have about your Frontier Airlines flight, including any questions you may have about changing or cancelling your reservation, your baggage allowance, or any delays. A wheelchair or customized meals are just two examples of the specific requests or services the representative may assist you with.