Costco gas prices in Arizona
Arizona average
- Regular
- $3.988
- Premium
- $4.614
- Diesel
- $5.129
Average across 19 stations, per gallon · updated July 22, 2026
Costco has 19 gas stations in Arizona — the cheapest regular today is $3.759/gal at Costco Gilbert in Gilbert. Arizona Costco regular prices have climbed about $0.224 per gallon over the past month, from $3.764 to $3.988. Premium is up $0.300 over the same stretch, now at $4.614. Diesel is up $0.280 over the same stretch, now at $5.129.
Gas stations
19
Arizona
Avg regular
$3.988
per gallon, USD
Cheapest now
$3.759
Costco Gilbert
30-day price trend
Regular$3.988Premium$4.614Diesel$5.129
View price history as a table
| Date | Regular | Premium | Diesel |
|---|---|---|---|
| July 22, 2026 | $3.988 | $4.614 | $5.129 |
| July 21, 2026 | $3.896 | $4.528 | $5.029 |
| July 20, 2026 | $3.866 | $4.468 | $4.999 |
| July 19, 2026 | $3.843 | $4.446 | $4.979 |
| July 18, 2026 | $3.750 | $4.371 | $4.829 |
| July 17, 2026 | $3.674 | $4.296 | $4.809 |
| July 16, 2026 | $3.602 | $4.179 | $4.779 |
| July 15, 2026 | $3.561 | $4.144 | $4.729 |
| July 14, 2026 | $3.522 | $4.101 | $4.649 |
| July 13, 2026 | $3.523 | $4.101 | $4.629 |
| July 12, 2026 | $3.533 | $4.101 | $4.579 |
| July 11, 2026 | $3.535 | $4.100 | $4.549 |
| July 10, 2026 | $3.531 | $4.059 | $4.449 |
| July 9, 2026 | $3.513 | $4.006 | $4.349 |
| July 8, 2026 | $3.493 | $4.003 | $4.399 |
| July 7, 2026 | $3.507 | $4.018 | $4.449 |
| July 6, 2026 | $3.524 | $4.030 | $4.449 |
| July 5, 2026 | $3.565 | $4.034 | $4.449 |
| July 4, 2026 | $3.485 | $4.020 | $4.449 |
| July 3, 2026 | $3.480 | $4.015 | $4.449 |
| July 2, 2026 | $3.491 | $4.025 | $4.449 |
| July 1, 2026 | $3.537 | $4.084 | $4.499 |
| June 30, 2026 | $3.576 | $4.121 | $4.559 |
| June 29, 2026 | $3.598 | $4.147 | $4.579 |
| June 28, 2026 | $3.611 | $4.151 | $4.579 |
| June 27, 2026 | $3.611 | $4.151 | $4.649 |
| June 26, 2026 | $3.635 | $4.172 | $4.699 |
| June 25, 2026 | $3.696 | $4.272 | $4.829 |
| June 24, 2026 | $3.703 | $4.272 | $4.829 |
| June 23, 2026 | $3.764 | $4.314 | $4.849 |
Cities with multiple stations
All stations in Arizona
All 19 stations, sorted by regular price from lowest to highest. Prices in $/gal.
| Rank | Station | Regular | Premium | Diesel |
|---|---|---|---|---|
| 1 | Costco GilbertGilbert | $3.759 | $4.359 | — |
| 2 | Costco BuckeyeBuckeye | $3.799 | $4.459 | — |
| 3 | Costco SW TucsonTucson | $3.799 | $4.599 | — |
| 4 | Costco AvondaleAvondale | $3.859 | $4.599 | — |
| 5 | Costco NW TucsonTucson | $3.859 | $4.659 | — |
| 6 | Costco GlendaleGlendale | $3.899 | $4.499 | — |
| 7 | Costco N PhoenixPhoenix | $3.959 | $4.659 | $5.099 |
| 8 | Costco TucsonTucson | $3.959 | $4.599 | — |
| 9 | Costco Cave CreekPhoenix | $3.999 | $4.659 | — |
| 10 | Costco MesaMesa | $3.999 | $4.599 | — |
| 11 | Costco Paradise ValleyPhoenix | $3.999 | $4.659 | — |
| 12 | Costco Thomas RoadPhoenix | $3.999 | $4.599 | — |
| 13 | Costco ChandlerChandler | $4.099 | $4.699 | — |
| 14 | Costco PrescottPrescott | $4.099 | $4.599 | $5.159 |
| 15 | Costco Queen CreekQueen Creek | $4.099 | $4.599 | — |
| 16 | Costco SE GilbertGilbert | $4.099 | $4.659 | — |
| 17 | Costco TempeTempe | $4.099 | $4.699 | — |
| 18 | Costco ScottsdaleScottsdale | $4.199 | $4.699 | — |
| 19 | Costco SurpriseSurprise | $4.199 | $4.759 | — |
Showing 1–10 of 19 stations