Filling Up on Gas Is Cheapest on Mondays in These 34 States
Few commodities are as volatile, price-wise, as gasoline. One month it’s “cheap," the next month it’s sky high. It all depends on a cluster of geopolitical, economic and environmental factors far beyond our control.
The best we can do is practice gas-conserving driving behaviors and stay in the know about how to get gas for the least amount of money possible, which means knowing the cheapest day of the week to get gas.
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A new study by Delancey Street analyzed daily gas price data from GasBuddy across all 50 states to find the cheapest day to fill up in each state. Researchers calculated the average price per gallon for every day of the week, then identified which day consistently delivered the lowest price.
These are the 34 states where it’s cheapest to fill up on gas on Mondays (the average cost is $2.91 per gallon, according to Delancey Street’s analysis). For more context, MoneyLion plugged in the average cost of a gallon of each type of gas in each state, per AAA, as of Monday, June 8, 2026.
1. Kansas
Regular gas: $3.801
Mid-grade gas: $4.2460
Premium gas: $4.573
Diesel gas: $4.920
2. Kentucky
Regular gas: $3.774
Mid-grade gas: $4.326
Premium gas: $4.748
Diesel gas: $4.950
3. Louisiana
Regular gas: $3.728
Mid-grade gas: $4.147
Premium gas: $4.553
Diesel gas: $4.793
4. Maine
Regular gas: $4.263
Mid-grade gas: $4.849
Premium gas: $5.343
Diesel gas: $5.6320 [
5. Maryland
Regular gas: $3.988
Mid-grade gas: $4.600
Premium gas, average, per gallon: $4.904
Diesel gas, average, per gallon: $5.141
6. Massachusetts
Regular gas: $4.292
Mid-grade gas: $4.879
Premium gas: $5.280
Diesel gas: $5.571
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7. Michigan
Regular gas: $4.152
Mid-grade: $4.753
Premium gas: $5.348
Diesel gas: $5.692
8. Minnesota
Regular gas: $3.971
Mid-grade gas: $4.421
Premium gas: $4.911
Diesel gas: $5.061
9. Mississippi
Regular gas: $3.752
Mid-grade gas: $4.194
Premium gas: $$4.569
Diesel gas: $4.801
10. Missouri
Regular gas: $3.846
Mid-grade gas: $4.246
Premium gas: $4.573
Diesel gas: $4.920
11. Montana
Regular gas: 4.362
Mid-grade gas: 4.700
Premium gas: $5.043
Diesel gas: $5.203
12. Nevada
Regular gas: $5.029
Mid-grade gas: $5.329
Premium gas: $5.628
Diesel gas: $5.925
13. New Hampshire
Regular gas: $4.270
Mid-grade gas: $4.845
Premium gas: $5.317
Diesel gas: $5.556
14. New Jersey
Regular gas: $4.246
Mid-grade gas: $4.806
Premium gas: $5.090
Diesel gas: $5.320
15. New Mexico
Regular gas: $4.060
Mid-grade gas: $4.474
Premium gas: $4.784
Diesel gas: $5.203
16. New York
Regular gas: $4.449
Mid-grade gas: $4.946
Premium gas: $5.345
Diesel gas: $5.810
17. North Carolina
Regular gas: $3.754
Mid-grade gas: $4.198
Premium gas: $4.606
Diesel gas: $4.973
18. North Dakota
Regular gas: $3.896
Mid-grade gas: $4.252
Premium gas: $4.694
Diesel gas: $4.854
19. Ohio
Regular gas: $4.045
Mid-grade gas: $4.578
Premium gas: $5.101
Diesel gas: $5.572
20. Oklahoma
Regular gas: $3.640
Mid-grade gas: $4.039
Premium gas: $4.341
Diesel gas: $4.624
21. Oregon
Regular gas: $5.110
Mid-grade gas: $5.364
Premium gas: $5.647
Diesel gas: $5.958
22. Pennsylvania
Regular gas: $4.338
Mid-grade gas: $4.777
Premium gas: $5.166
Diesel gas: $5.702
23. Rhode Island
Regular gas: $4.183
Mid-grade gas: $4.901
Premium gas: $5.290
Diesel gas: $5.285
24. South Carolina
Regular gas: $3.704
Mid-grade gas: $4.131
Premium gas: $4.538
Diesel gas: $4.865
25. South Dakota
Regular gas: $4.029
Mid-grade gas: $4.266
Premium gas: $4.778
Diesel gas: $4.779
26. Tennessee
Regular gas: $3.751
Mid-grade gas: $4.195
Premium gas: $4.600
Diesel gas: $4.926
27. Texas
Regular gas: $3.627
Mid-grade gas: $4.084
Premium gas: $4.449
Diesel gas: $4.708
28. Utah
Regular gas: $4.415
Mid-grade gas: $4.699
Premium gas: $4.934
Diesel gas: $5.332
29. Vermont
Regular gas: $4.385
Mid-grade gas: $4.917
Premium gas: $5.381
Diesel gas: $5.604
30. Virginia
Regular gas: $3.965
Mid-grade gas: $4.463
Premium gas: $4.850
Diesel gas: $5.181
31. Washington
Regular gas: $5.624
Mid-grade gas: $5.872
Premium gas: $6.116
Diesel gas: $6.560
32. West Virginia
Regular gas: $4.162
Mid-grade gas: $4.523
Premium gas: $5.003
Diesel gas: $5.269
33. Wisconsin
Regular gas: $3.964
Mid-grade gas: $4.529
Premium gas: $5.100
Diesel gas: $5.274
34. Wyoming
Regular gas: $4.3040
Mid-grade gas: $4.5610
Premium gas: $4.8610
Diesel gas: $5.2480
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This article was provided by MoneyLion.com for informational purposes only and should not be construed as financial, legal or tax advice.
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