Costco Gas Prices in Connecticut
- Regular avg
- $3.916▼ −$0.027
- Premium avg
- $4.766▼ −$0.041
- Stations reporting
- 7
Avg of 7 stations · per gallon · ▲▼ change since the previous day
Average price history in Connecticut
Last 30 days · per gallonRegular: $4.188 on Oct 2 to $3.916 on Oct 31, low $3.916, high $4.188. Premium: $4.999 on Oct 2 to $4.766 on Oct 31, low $4.766, high $5.039.
Costco gas in Connecticut today
Costco gas stations in Connecticut include the warehouses in Brookfield, East Lyme, Enfield, Milford, New Britain, South Windsor, and Waterbury.
Today’s Regular prices span $0.220 across the 7 stations reporting, from the cheapest to the most expensive.
Costco Regular prices in Connecticut have eased about $0.267 over the past month, from $4.183 a month ago.
The furthest any single station moved was Milford, down $0.340.
- Cheapest today
- New Britain — $3.779
- Most expensive today
- Enfield — $3.999
- vs the US average
- $0.359 below, at $4.275
- Diesel
- sold at none of the 7 stations
- Weekday opening
- 6 a.m. at all 7 stations
- Newest warehouse
- South Windsor — November 2021
- Oldest warehouse
- Brookfield — November 1991
Connecticut stations by price
Cheapest first — page through to see more.
| Rank | Station | Location | Regular today |
|---|---|---|---|
| 1 | New BritainNew Britain | New Britain | $3.779 |
| 2 | WaterburyWaterbury | Waterbury | $3.859 |
| 3 | MilfordMilford | Milford | $3.899 |
| 4 | BrookfieldBrookfield | Brookfield | $3.939 |
| 5 | South WindsorSouth Windsor | South Windsor | $3.939 |
| 6 | EnfieldEnfield | Enfield | $3.999 |
| 7 | E LymeEast Lyme | East Lyme | $3.999 |
Fuel grades at Costco in Connecticut
All 7 Costco gas stations in Connecticut sell Kirkland Signature fuel, which is Top Tier certified. None of them reported a diesel price in the last 30 days.
| Grade | Stations | Avg today | Cheapest |
|---|---|---|---|
| Regular | 7 | $3.916 | New Britain $3.779 |
| Premium | 7 | $4.766 | Brookfield $4.559 |
Regular
all 7 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 7 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.
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 Connecticut good quality?
Costco does not sell a refiner’s brand. Every pump in Connecticut 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 Connecticut
On weekdays the earliest pumps in Connecticut come on at 6 a.m. (Brookfield) and the last ones switch off at 10 p.m. (Brookfield). Pump hours run longer than the warehouse's, and weekends are shorter. Times are local.
| Station | Mon–Fri | Sat | Sun |
|---|---|---|---|
| Brookfield | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| E Lyme | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Enfield | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Milford | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| New Britain | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| South Windsor | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Waterbury | 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 Connecticut
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
- 7 of 7
- Pharmacy
- 7 of 7
- Optical
- 7 of 7
- Tire center
- 7 of 7
- Car wash
- 0 of 7
- EV charging
- 0 of 7
How Costco gas works in Connecticut
Bring your card. The pump asks for an active Costco membership card before it starts, at all 7 gas stations in Connecticut. 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 Connecticut can differ. Today the regular average here is $3.916. 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.
Connecticut prices by city
- Brookfield · 1 station$3.939
- East Lyme · 1 station$3.999
- Enfield · 1 station$3.999
- Milford · 1 station$3.899
- New Britain · 1 station$3.779
- South Windsor · 1 station$3.939
- Waterbury · 1 station$3.859
States near Connecticut
- Costco gas prices Massachusetts · 4 stations$3.782
- Costco gas prices New York · 11 stations$3.992
- Costco gas prices New Jersey · 19 stations$3.912
- Costco gas prices Maine · 1 station$3.879
- Costco gas prices Delaware · 1 station$3.729
- Costco gas prices Vermont · 1 station$4.249
Costco gas in Connecticut: common questions
Where is the cheapest Costco gas in Connecticut today?
New Britain posts the lowest Regular price in Connecticut, $3.779 as of the October 31, 2026 reading — $0.220 under Enfield, the most expensive of the 7 stations reporting.
How many Costco gas stations are there in Connecticut?
Connecticut has 7 Costco warehouses with a gas station, across 7 cities, and all of them reported a price in the last 30 days.
Which Costco gas stations in Connecticut sell diesel?
No — none of the 7 stations in Connecticut has reported a diesel price in the last 30 days. Costco sells diesel at a minority of its locations in the US.
Is Costco gas cheaper in Connecticut than in the US?
Yes — the average Costco Regular price in Connecticut is $3.916, $0.359 below the US average of $4.275 as of the October 31, 2026 reading.
Are Costco gas prices in Connecticut going up or down?
Down — the average Costco Regular price in Connecticut has eased about $0.267 over the past month, from $4.183 to $3.916.
What time do Costco gas stations in Connecticut open?
The pumps open at 6 a.m. on weekdays at all 7 stations, ahead of the warehouse doors. Each station page carries its own full week, in local time.