Q. What day of the week do the airlines release their weekend fares?
A. Many weekend fares are actually available for booking as early as Sunday (for example, Delta); others on Monday. But the airlines first post these fares on their web sites, then send automated emails later in the week, usually on Tuesday or Wednesday. Because of the volume of emails they send, some folks get their weekend alerts later than others, so it's best to check the web sites quickly to get first dibs. Airfarewatchdog lists weekend fares as soon as we can find them on airline web sites, and sometimes earlier if we come across one on a Sunday or Monday, before the fares are even posted on airline web sites.