Southwest recently introduced a sale on tickets between Phoenix and San Diego as well as other destinations, but the prices of the sale tickets are higher than the low fares many travelers have grown to expect. Tom Parsons of BestFares.com says the prices are "not really that bad" although they are higher than the airline's historical range of sale fares. Other airlines have also boosted fares. "The writing is on the wall," Parsons said. "We had nine months of great travel bargains in 2009. Air travelers will be paying much more (in 2010) than they did in early 2009, as much as 50% more."