Costco Gas Prices in Alaska
- Regular avg
- $4.306
- Premium avg
- $4.752▼ −$0.047
- Diesel avg
- $5.999
- Stations reporting
- 3
Avg of 3 stations · per gallon · ▲▼ change since the previous day
Average price history in Alaska
Last 30 days · per gallonRegular: $4.722 on Oct 2 to $4.306 on Oct 31, low $4.306, high $4.776. Premium: $5.226 on Oct 2 to $4.752 on Oct 31, low $4.752, high $5.306. Diesel: $6.399 on Oct 2 to $5.999 on Oct 31, low $5.999, high $6.399.
Costco gas in Alaska today
Costco gas stations in Alaska include the warehouses in Anchorage (Anchorage and NE Anchorage) and Fairbanks.
Today’s Regular prices span $0.440 across the 3 stations reporting, from the cheapest to the most expensive.
2 stations are tied at today’s lowest price.
Costco Regular prices in Alaska have eased about $0.417 over the past month, from $4.722 a month ago.
The furthest any single station moved was NE Anchorage, down $0.500.
- Cheapest today
- Anchorage — $4.159
- Most expensive today
- Fairbanks — $4.599
- vs the US average
- $0.030 above, at $4.275
- Diesel
- sold at 1 of 3 stations
- Weekday opening
- 6 a.m. at all 3 stations
- Newest warehouse
- Fairbanks — November 2018
- Oldest warehouse
- Anchorage — October 1984
Alaska stations by price
Cheapest first — page through to see more.
| Rank | Station | Location | Regular today |
|---|---|---|---|
| 1 | AnchorageAnchorage | Anchorage | $4.159 |
| 2 | NE AnchorageAnchorage | Anchorage | $4.159 |
| 3 | FairbanksFairbanks | Fairbanks | $4.599 |
Fuel grades at Costco in Alaska
All 3 Costco gas stations in Alaska sell Kirkland Signature fuel, which is Top Tier certified. Diesel is sold at 1 of the 3.
| Grade | Stations | Avg today | Cheapest |
|---|---|---|---|
| Regular | 3 | $4.306 | Anchorage $4.159 |
| Premium | 3 | $4.752 | Anchorage $4.599 |
| Diesel | 1 | $5.999 | Anchorage $5.999 |
Regular
all 3 stations87-octane Kirkland Signature unleaded, the grade most cars are built for.
- Same TOP TIER detergent package as premium. The only difference between the two is octane.
- Can contain up to 10% ethanol, like most US gasoline. The pump label shows the blend.
Premium
all 3 stationsKirkland Signature premium: 91 octane at most stations, 93 in some regions.
- Only needed if your owner’s manual requires or recommends premium. Higher octane resists engine knock; it adds nothing to an engine built for regular.
- Carries the same detergent additives as regular.
Diesel
1 of 3 stationsKirkland Signature diesel, ultra-low-sulfur like all on-road diesel in the US.
- Costco says its diesel additives clean deposits from fuel injectors, keep new ones from forming and help reduce engine wear.
Not sold at Costco
- Mid-grade (89): Costco pumps offer regular and premium only.
- Cash sales: every Costco pump is card-only.
Is Costco gas in Alaska good quality?
Costco does not sell a refiner’s brand. Every pump in Alaska dispenses Costco’s own Kirkland Signature fuel, bought from major refiners and distributors in the region and finished with Costco’s additive package.
Kirkland Signature gasoline is licensed TOP TIER, the detergent standard set by automakers including GM, Ford, Toyota, Honda and BMW. Costco puts its detergent level at about five times the EPA minimum, which is what keeps intake valves and fuel injectors clear of carbon deposits. Costco’s gasoline also contains friction modifiers that it says reduce engine wear.
In short, the low price is not a lower grade. The saving comes from Costco running its gas as a membership perk on thin margins, not from the fuel.
Costco gas station hours in Alaska
On weekdays the earliest pumps in Alaska come on at 6 a.m. (Anchorage) and the last ones switch off at 10 p.m. (Anchorage). Pump hours run longer than the warehouse's, and weekends are shorter. Times are local.
| Station | Mon–Fri | Sat | Sun |
|---|---|---|---|
| Anchorage | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Fairbanks | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| NE Anchorage | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
What else is at Costco warehouses in Alaska
Every Costco gas station sits in a warehouse parking lot, so a fill-up can share a trip with the rest of the list.
- Food court
- 3 of 3
- Pharmacy
- 3 of 3
- Optical
- 3 of 3
- Tire center
- 3 of 3
- Car wash
- 0 of 3
- EV charging
- 0 of 3
How Costco gas works in Alaska
Bring your card. The pump asks for an active Costco membership card before it starts, at all 3 gas stations in Alaska. Without a membership, a Costco Shop Card loaded with credit works the same way.
Pay by card. The pumps take Visa, most debit cards and the Costco Shop Card. There is no cash, and a card hold of up to $150 can show until the fill posts.
Check the price first. Each station sets its own price, usually once a day, so two Costco stations in Alaska can differ. Today the regular average here is $4.306. The prices on this page are collected once daily and can lag a same-day change at the pump.
Go early or late. Lines are longest on weekend afternoons and weekday evenings. The first pumps here open at 6 a.m. on weekdays.
Alaska prices by city
States near Alaska
- Costco gas prices Washington · 34 stations$4.680
- Costco gas prices Oregon · 13 stations$4.442
- Costco gas prices Montana · 5 stations$4.151
- Costco gas prices Idaho · 7 stations$4.220
- Costco gas prices Utah · 16 stations$4.283
- Costco gas prices North Dakota · 2 stations$3.799
Costco gas in Alaska: common questions
Where is the cheapest Costco gas in Alaska today?
Anchorage posts the lowest Regular price in Alaska, $4.159 as of the October 31, 2026 reading — $0.440 under Fairbanks, the most expensive of the 3 stations reporting. It shares that price with 1 other station.
How many Costco gas stations are there in Alaska?
Alaska has 3 Costco warehouses with a gas station, across 2 cities, and all of them reported a price in the last 30 days.
Which Costco gas stations in Alaska sell diesel?
Diesel is sold at 1 of 3 stations in Alaska. Each station page lists the grades that warehouse has actually posted a price for in the last 30 days.
Is Costco gas cheaper in Alaska than in the US?
No — the average Costco Regular price in Alaska is $4.306, $0.030 above the US average of $4.275 as of the October 31, 2026 reading.
Are Costco gas prices in Alaska going up or down?
Down — the average Costco Regular price in Alaska has eased about $0.417 over the past month, from $4.722 to $4.306.
What time do Costco gas stations in Alaska open?
The pumps open at 6 a.m. on weekdays at all 3 stations, ahead of the warehouse doors. Each station page carries its own full week, in local time.