Tom Parsons, chief executive officer of BestFares.com, said, "there is some strategy this year. Be flexible. If you can fly midweek, odds are better you'll get one of the cheaper fares."
Parson suggested buying a ticket in midweek, when some airlines adjust prices to match low fares offered by discount carriers, The Boston Globe reported.
Discounts are often restricted to specific cities and for specific dates or with advanced purchases only.
For those who meet the restrictions, current fare offerings include a $188 round trip ticket from New York to San Francisco offered by AirTran in a sale that ends Thursday and a $78 round trip ticket between New York and Washington and a $238 round trip ticket between Boston and Los Angeles in a sale the ends Wednesday on JetBlue. In addition, a Frontier sale that includes a $98 round trip ticket for flights between Denver and Long Beach, Calif., ends Friday, the Globe said.