Cheapest Gas in Duluth, MN

Updated May 20, 2026 — Prices updated regularly from EIA data

$2.78

Lowest price at Costco in Duluth

Finding Cheap Gas in Duluth

Duluth's most affordable fuel stations are identified below. At peak savings, Duluth drivers who choose wisely pay $$2.78 per gallon instead of $$3.03 — a difference that compounds quickly for regular commuters.

Maximum Savings in Duluth

Choose Costco over Chevron

$0.25 per gallon

$3.75 per 15-gallon fill • $12.00 per year (est.)

Cheapest Brands in Duluth

Rank	Brand	Est. Price	Savings vs. Most Expensive
#1	Costco	$2.78	$0.25
#2	Speedway	$2.90	$0.13
#3	Circle K	$2.91	$0.12
#4	Sunoco	$2.94	$0.09
#5	Marathon	$2.95	$0.08
#6	BP	$2.97	$0.06
#7	Mobil	$2.98	$0.05
#8	Exxon	$2.99	$0.04
#9	Shell	$3.01	$0.02
#10	Chevron	$3.03	$0.00

Gas Saving Tips for Duluth Drivers

Check tire pressure monthly, especially as seasons change — tire pressure drops about 1 PSI for every 10-degree Fahrenheit temperature decrease.
Fill up on Monday or Tuesday mornings — gas prices typically rise Thursday through Sunday as weekend demand increases, then reset lower early in the week.
Use the GasBuddy or Waze app to compare prices within 5 miles of your location before every fill-up. Even a 10-cent difference on 15 gallons saves $1.50 each fill-up.
Join a warehouse club (Costco, Sam's Club, BJ's) — their fuel consistently runs 10-25 cents below local market prices. The membership cost typically pays for itself in fuel savings within the first two months.
Sign up for gas station loyalty apps — Shell Fuel Rewards, Marathon MakeItCount, and Circle K Inner Circle all offer genuine per-gallon discounts that compound over time.