British-airways

https://www.devex.com/people/real-guide-what-is-the-cancelation-policy-for-lufthansa-2269876

American-airlines-telefono-para-ayuda

https://www.devex.com/people/delta-csmx-ayuda-como-comunicarme-con-delta-airlines-telefono-mexico-2269217

https://www.devex.com/people/does-virgin-atlantic-have-free-cancellation-2269661

Delta-airlines-telefono

https://www.devex.com/people/speak-to-a-united-airlines-agent-right-away-2269575

https://www.devex.com/people/connect-instantly-with-a-united-airlines-representative-2269448

Lufthansa-argentina-telefono

https://www.devex.com/people/cancellation-support-does-alaska-still-have-free-cancellation-2269294