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USA › Road trip gas calculator › Philadelphia to Washington, D.C.

Philadelphia to Washington, D.C.: gas cost

About 140 miles one way. Fuel cost at this week’s average regular price in Central Atlantic (PADD 1B): $4.232 per gallon (EIA, week of Nov 2, 2026).

Fuel cost by vehicle

VehicleMPGGallonsOne wayRound trip
Compact car354.0$16.93$33.86
Midsize sedan304.7$19.75$39.50
SUV / crossover245.8$24.69$49.37
Pickup truck187.8$32.92$65.83

💡 Delaware and Maryland have different gas taxes – compare before you cross.

Calculate with your own numbers

Popular road trips

RouteMilesGas cost, 30 MPG
Los Angeles → Las Vegas270$51.68
San Francisco → Los Angeles382$73.19
New York City → Washington, D.C.225$30.86
Boston → New York City215$29.58
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Dallas → San Antonio275$32.80
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Boston → Portland, Maine110$15.13
Orlando → Tampa85$10.74
Orlando → Key West410$51.81
Miami → Key West160$20.65
Jacksonville → Miami345$43.60
Seattle → Spokane280$49.31
Portland → San Francisco635$100.99
Los Angeles → Sacramento385$73.77
San Diego → Las Vegas330$63.23
San Diego → Phoenix355$68.02
San Francisco → Las Vegas565$108.25
Phoenix → Las Vegas300$47.71
Las Vegas → Grand Canyon South Rim280$44.53
Salt Lake City → Las Vegas420$58.98
Denver → Las Vegas750$100.40
Denver → Albuquerque450$60.24
Denver → Chicago1,000$135.60
Kansas City → St. Louis250$34.18
Kansas City → Denver600$82.04
Pittsburgh → Philadelphia305$43.03
Columbus → Chicago355$48.40
Cincinnati → Nashville275$37.49
Phoenix → Tucson115$18.29

FAQ

How much does it cost to drive from Philadelphia to Washington, D.C.?

At about 140 miles and this week’s average of $4.232 per gallon (Central Atlantic (PADD 1B)), a car averaging 30 MPG uses about 4.7 gallons – roughly $19.75 one way or $39.50 round trip.

How many gallons of gas from Philadelphia to Washington, D.C.?

About 4.0 gallons for a 35 MPG car, 5.8 for a 24 MPG SUV and 7.8 for an 18 MPG pickup.

Gas prices by state this week → · Gas price history → · More calculators →

Distances are approximate driving distances. Gas prices: U.S. Energy Information Administration weekly averages for regular gasoline; actual prices along the route vary.