Gas Prices in South Portland, ME
Updated May 21, 2026 · AAA data · Regular unleaded
Gas Prices in South Portland
Gas prices in South Portland reflect a mix of local taxes, distance to fuel distribution terminals, station density, and real estate costs. As an urban market, South Portland typically runs 2¢ above the Maine statewide average.
Prices at individual stations can vary by 5–15 cents within the same city depending on brand, location, and local competition. Use apps like GasBuddy to find the cheapest station near you in South Portland.
Frequently Asked Questions
What is the gas price in South Portland right now?
The average regular unleaded price in South Portland, Maine is $4.540/gal as of May 21, 2026. Station prices vary — expect a range of roughly $4.440 to $4.660 across the metro area.
Is gas cheaper in South Portland or the suburbs?
Generally, suburban areas outside South Portland have slightly lower gas prices due to lower operating costs and property taxes. If you're near a highway interchange or warehouse district, you may find lower prices than the city center.
When is the cheapest day to buy gas in South Portland?
Nationwide data shows Monday and Tuesday tend to have slightly lower gas prices before weekly demand picks up. Avoid buying gas Thursday through Saturday when prices are typically higher.