Credit: Investopedia / Sabrina Karl Key Takeaways Gas prices fell for the first time since mid-February, though the national average remains up $1.17 since March 1. Only four states now have average gas prices below $3.65, while five states still top $5 per gallon. Oil prices have plunged after news of a U.S.-Iran ceasefire, but gas prices may take time to follow. Gas Prices Edge Lower but Remain Near Multiyear Highs For the first time since mid-February, gasoline prices fell Friday. The dip co ...