Gas Prices in Honolulu, HI
Updated May 21, 2026 · AAA data · Regular unleaded
Gas Prices in Honolulu
Honolulu has the most expensive gas of any major US city outside of remote Alaska communities, driven by the Jones Act shipping premium, reliance on Hawaii's sole refinery, and high island operating costs. Costco in the Iwilei/Waipio area offers the only meaningful price relief — often 35-50¢ below typical Honolulu station prices.
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 Honolulu.
Frequently Asked Questions
What is the gas price in Honolulu right now?
The average regular unleaded price in Honolulu, Hawaii is $5.600/gal as of May 21, 2026. Station prices vary — expect a range of roughly $5.500 to $5.720 across the metro area.
Why does Honolulu pay so much more for gas than the mainland?
Honolulu pays a massive Jones Act shipping premium on top of Hawaii's regular distribution costs. The Jones Act requires US-flagged ships for inter-state cargo, limiting supply competition. When the single Oahu refinery has issues, there's minimal backup supply available.
Is the Costco line worth it for Honolulu gas?
Absolutely — Honolulu Costco regularly saves members 35-50¢/gallon vs nearby alternatives. The Iwilei location often has lines, but at 15 gallons per fill-up, the $5-7.50 savings is worth a 10-15 minute wait for most residents.
When is the cheapest day to buy gas in Honolulu?
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.