But during peak holiday travel like Thanksgiving, price will vary based on timing, Mr. Klees says.
WSJ: How (and When) to Snag Cheap Airfares
"Of course, a million caveats apply, " says Jeff Klees, chief executive of CheapAir.com, an airfare-shopping engine.
"You'll see crazy fares that are literally five times as much as what you would normally pay for a flight, " Mr. Klees says.
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