Airfare is taking off as the Iran war drives up jet fuel costs, with travelers now facing steeper prices heading into the summer travel season.

The spike shows how the conflict in Iran is hitting Americans far beyond the battlefield, as rising oil prices ripple through airlines, gas prices and consumer costs. Fuel is one of airlines’ largest operating expenses, according to the World Air Transport Statistics (WATS), and higher costs are increasingly being passed on to travelers through higher fares, added fees and fewer flight options.

Airfares are reportedly surging by around 25% according to data released by KAYAK. The increase comes as the Iran war drives up jet fuel prices and Americans head into the busiest travel season of the year, straining consumers’ plans.

Families planning to travel are getting hit with higher ticket prices, raising the possibility that travelers may resort to changing destinations and driving instead of flying.

“I don’t see how a family that could just barely justify, say $500 in plane tickets, is going to be able to justify $800,” JP Krahel, Loyola University professor, told CBS News. “If it’s a discretionary trip, they may say, ‘You know what, instead of flying across the country, let’s just drive down to the beach.’” (Read more from “Iran War Drives Up Jet Fuel Costs As Summer Travel Season Looms” HERE)