Costco Fairfax Gas Prices – Ox Rd
- Regular · today
- $3.729
- Premium · today
- $4.629
USD per gallon · Last updated October 31, 2026 · This station does not sell diesel
4725 W Ox Rd, Fairfax, VA 22030-6125 · Open in Maps ↗
30-day range
where today sits- Regular$3.729 today · avg $3.778$3.729 low$3.799 high
- Premium$4.629 today · avg $4.666$4.629 low$4.679 high
Price history at Fairfax
Last 30 days · USD per gallonRegular: $3.799 on Oct 2 to $3.729 on Oct 31, low $3.729, high $3.799. Premium: $4.679 on Oct 2 to $4.629 on Oct 31, low $4.629, high $4.679.
Last updated October 31, 2026. Prices are collected once daily and can lag same-day changes at the pump.
Today’s price in context
At $3.729 for Regular, Fairfax is tied for the 5th cheapest of 15 Costco gas stations in Virginia today, $0.021 below the Virginia average of $3.750.
None of the 5 nearest Costco stations is cheaper today.
- vs the US average
- $0.546 below, at $4.275
- Premium over Regular
- $0.900 — the Virginia median is $0.790
- Regular over the last 30 days
- down $0.070
- Days the price changed
- 2 of 30 reported days
- Latest day at the 30-day low
- today, at $3.729
- 15-gallon fill
- $55.94 — the cheapest it has been in 30 days
Fairfax is located at 4725 W Ox Rd, Fairfax, VA 22030-6125, in Virginia. The gas station sits in the warehouse parking lot and is open to Costco members, selling Regular and Premium — this location does not sell diesel. Gas station hours are 6 a.m. – 10 p.m. on weekdays, 6 a.m. – 8:30 p.m. on Saturdays and 6 a.m. – 7:30 p.m. on Sundays, in local time.
Station details
Fairfax Gas station hours
- Mon–Fri
- 6 a.m. – 10 p.m.
- Saturday
- 6 a.m. – 8:30 p.m.
- Sunday
- 6 a.m. – 7:30 p.m.
Fairfax Warehouse hours
- Mon–Fri
- 10 a.m. – 8:30 p.m.
- Saturday
- 9:30 a.m. – 7 p.m.
- Sunday
- 10 a.m. – 6 p.m.
Cities near Fairfax
- Costco gas prices Chantilly · VA · 5 mi$3.729
- Costco gas prices Manassas · VA · 9 mi$3.759
- Costco gas prices Sterling · VA · 12 mi$3.849
- Costco gas prices Woodbridge · VA · 15 mi$3.859
- Costco gas prices Alexandria · VA · 17 mi$3.859
- Costco gas prices Leesburg · VA · 20 mi$3.899
- Costco gas prices Beltsville · MD · 28 mi$3.669
- Costco gas prices Glenarden · MD · 28 mi$3.699
At this location
- Warehouse opened
- November 1986
- Warehouse phone
- (703) 332-3200
- Pumps open early
- 4 hours before the warehouse on weekdays
Also at this warehouse: a food court, a pharmacy, an optical department, a hearing aid center and a tire center.
Frequently asked questions
How much is gas at Costco Fairfax today?
As of October 31, 2026: Regular $3.729 and Premium $4.629 per gallon. Prices are collected once a day, so the pump can differ.
What time does the Costco Fairfax gas station open?
The pumps are open 6 a.m. – 10 p.m. weekdays, 6 a.m. – 8:30 p.m. Saturdays and 6 a.m. – 7:30 p.m. Sundays, in local time. The pumps open 4 hours before the warehouse on weekdays.
Does the Costco Fairfax gas station sell diesel?
No — this station sells Regular and Premium, and has reported no diesel price in the last 30 days.
Is Costco Fairfax cheaper than the average Costco station in Virginia?
Yes — at $3.729, Regular here is $0.021 below the average Costco price in Virginia, $3.750.
Where is the Costco Fairfax gas station?
At 4725 W Ox Rd, Fairfax, VA 22030-6125. It sits in the Costco warehouse parking lot and is open to members only.
Do you need a Costco membership to buy gas?
Yes — a Gold Star, Executive or Business membership card has to be scanned at the pump before it will dispense, though a Costco Shop Card also works for non-members.
What payment methods does the Costco gas station accept?
Visa, PIN debit and the Costco Shop Card; US Costco fuel pumps take no cash and no Mastercard, American Express or Discover.
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