U.S. oil prices already jumped last week, which could cause prices at the pump to rise about 20 cents a gallon in the coming weeks, according to one estimate.

Crude oil futures jumped more than 3% Sunday after Israel struck two natural gas facilities in Iran, raising fears that the war will expand to energy infrastructure and disrupt supplies in the region.

Oil climbed early Monday with investors squarely focused on escalating geopolitical tensions as Israel and Iran continue to bombard each other with no sign of a pause.