Kids eat less food and take up less space, but they're often charged adult rates. Depending whether your cities are covered in the other sales, you might do better booking your whole family with the other airlines' sale prices. There are also blackouts during holiday periods. You can travel until December 14. The promotion extends to packages to Salt Lake City, Lake Tahoe, Albuquerque, and Sun Valley.
Offers vary slightly per destination.
For Lake Tahoe packages, everyone gets their second day of ski tickets for free. As with most of Southwest Vacations' products, they're reasonable. Those are based on Tuesday departures with Thursday returns, which most people don't want, so yours will probably price higher. Of course, the farther you have to fly and the longer you want to stay, the higher that price will go. You can only get one free child's airfare for every adult package you buy, so if you're traveling alone with two kids, you have to buy flights for one of them.