60da59b1_Frontier_Travel_Policies__Documentation_required___
[Type of Emergency Event...] Lost or stolen travel documents [Options available to you...] Change your travel date, time, and/or destination for up to 90 days from the original date of purchase with no change fee (any fare difference will apply [Documentation required...] 
Embassy receipt or police report for lost or stolen documents
Frontier Travel Policies
Documentation required...