Money Gas prices will fall below $3 per gallon in 2022, government projections say December 8, 2021 Wyatte Grantham-Philips, USA TODAY Comments Off on Gas prices will fall below $3 per gallon in 2022, government projections say Retail gas prices could start dropping to an average of $2.88 per gallon in 2022, down from 2021's average of $3.00, a US government report predicts.