https://thelinuxforum.com/forum/general-linux-forums/general-linux-discussions/14604-refund-policy-2025-is-expedia-actually-fully-refundable

https://support.withings.com/hc/en-us/community/posts/31804359903761-%C3%96fficial-%C3%84gente-C%C3%B3mo-llamar-a-Delta-Airlines-en-M%C3%A9xico

https://connect.mayoclinic.org/discussion/1-844-801-3898ask-faqs-can-i-cancel-british-airways-in-24-hours/

https://www.devex.com/people/guia-rapida-cuanto-cobra-frontier-por-maleta-en-el-aeropuerto-2479800

https://www.devex.com/people/q-como-puedo-comunicarme-con-frontier-en-espanol-2479792

https://knowt.com/note/c62b8e4d-ce2f-474a-9fed-c068b133cb11/MX-Cunto-cobra-American-Airlines-por-c

https://www.devex.com/people/como-llamar-a-frontier-airlines-desde-mexico-2479784

https://support.withings.com/hc/en-us/community/posts/31804627414417–833-834-1025-Does-SBCGlobal-net-still-exist

https://www.devex.com/people/cual-es-la-politica-de-cancelacion-de-frontier-airlines-2479764

https://www.devex.com/people/como-puedo-cambiar-mi-vuelo-en-frontier-airlines-2479734