Attention: New Fare Rule Locks You Into One Carrier on Domestic Round-trips

Here goes wily Delta again. The latest way the airline is picking your mileage pocket. 

Changes in the airfare rules and restrictions are usually done in the dead of night. We’re not supposed to notice.

So, it came as no surprise when Delta recently changed—or should we say, brought back from the dead the old way of pricing—a fare-restriction rule pertaining to the lowest fares for both economy and First Class domestic travel.