Where can I find my Voucher number?

A 17-digit voucher number is indicated on the email sent by Frontier Airlines. The email was likely sent to the email used on your previous booking or the email attached to your Frontier Miles account. We recommend searching your email including junk or spam folders.


  • The subject line is “Your $XX voucher is here.” 
  • The sender address was either flights@emails.flyfrontier.com or myfrontier@emails.flyfrontier.com