By Kris Van Cleave Kris Van Cleave Emmy Award-winning journalist Kris Van Cleave is the senior transportation correspondent for CBS News based in Phoenix, Arizona, where he also serves as a national correspondent reporting for all CBS News broadcasts and platforms. Read Full Bio Updated on: April 23, 2026 / 8:42 PM EDT / CBS News Add CBS News on Google As many Americans plan their summer vacations, airfares are taking off. Airline ticket prices have jumped because of higher oil and jet fuel costs stemming from the  Iran war . With prices likely to stay elevated, aviation experts urged consumers to move quickly to lock in their travel plans. "If you haven't booked for this summer, get busy," Henry Harteveldt, an airline industry analyst with Atmosphere Research Group, told CBS News.  "Don't wait, hoping that the fares are going to go down," he added.…