Iowans who want to fly somewhere else will have to pay significantly more for their tickets today. Airfares on most carriers went up late on Friday — and now travel agents are scrambling to figure out the best rates for their clients. Flying from Des Moines to New York City has gotten pricey.Nancy Martinez is a travel consultant in Des Moines and says some fares have more than doubled, while others haven’t budged. She says airlines are building higher costs into their ticket prices in creative ways lately.Airlines have built in 40-dollars in fuel service charges in recent weeks to cover rising jet fuel costs. Those costs aren’t readily visible by ticket buyers though as they’re being combined with taxes, which Martinez says aren’t usually included the base ticket price.Martinez says airfares between Des Moines and Atlanta have risen about 40 dollars since Friday, while fares to Newark rose 250 dollars. Other fares, to Phoenix or Miami are stable — for now — since she says the rates change by the minute.