A layover is any connection between flights. This could include a stop as short as 30 minutes (depending upon the airport) or as long as four hours (or up to 23 hours and 59 minutes on international flights). It’s ok to use layover and connection interchangeably. A stopover, however, if …
When the program first started the original way to gain entrance to TSA Pre-Check was through an invite from one of your frequent flyer programs. However, in the years since then other methods have become available – specifically, through Global Entry membership or applying directly to the TSA Pre-Check program. …
In the olden days, when non-refundable also meant non-changeable, that was indeed true. However, that practice was virtually eliminated when airlines began allowing the value of non-refundable tickets to be retained for future use, minus a change fee. Some airlines may reduce or waive the change fee with appropriate documentation. …