EDITORS NOTE: ART ADV: With photo.); (With: MIDEAST-ECON-RDP, GAS-PRICES, MIDEAST-CONFLICT The preliminary U.S.-Iranian deal could lower fuel prices, but don’t expect cheaper flights anytime soon. The conflict caused jet fuel prices to nearly double, forcing airlines to operate fewer flights and raise fares. The framework deal U.S. and Iranian officials are expected to sign Friday would restore oil exports from the Middle East, but airlines may not see their fuel bills drop for months.