Gas prices in Houston are increasing rapidly due to rising oil prices amid global conflict, which could reach $4 per gallon as soon as Monday, according to GasBuddy. The increase comes after Iran threatened to shut down one of the world's busiest oil-shipping passages after President Donald Trump issued an ultimatum to restore oil traffic. Goldman Sachs analysts predict that elevated oil prices could continue for years, possibly through 2027, meaning drivers may continue to see higher prices at the pump. In Houston, prices vary depending on type of fuel, anything above regular unleaded is already pushing past $4 a gallon. Experts warn that as long as oil supply routes remain threatened, gas prices will likely remain high and could fall slowly even after the conflict ends.