All say they contacted Frontier for refunds to no avail. Frontier is offering vouchers for future travel, but consumers say the windows to re-book are too short, in many cases just 90 days.

Frontier Airlines announces 20 new domestic and international routes with fares starting at $29, launching from major cities ...

A number of airlines, including Frontier, have been forced to pay over $600M in flight refunds to passengers amid pandemic woes.

McLauchlin wanted a refund, and she got this emailed confirmation from Ace Travelers confirming she'd get her refund. However, after more than six weeks of waiting, and no refund, she was frustrated.