US Road Fuel Cost Estimator
Seattle → San Antonio
How much petrol or diesel does it cost to drive from Seattle to San Antonio? Breakdown by vehicle type using today's United States fuel prices, updated from the datasource.
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Fuel Cost by Vehicle Type
Select your vehicle to see the detailed fuel breakdown for this route. Prices as of May 11, 2026.
Monthly Fleet Fuel Cost
Running this route regularly? Estimated one-way fuel cost per month, by trip frequency. Figures use primary fuel for each vehicle type (toll excluded).
| Vehicle | 1×/month | 5×/month | 10×/month | 22×/month |
|---|---|---|---|---|
Motorcycle Regular | USD 387 | USD 1,936 | USD 3,872 | USD 8,517 |
Car / SUV Regular | USD 1,291 | USD 6,453 | USD 12,905 | USD 28,391 |
Van / MPV Diesel | USD 2,161 | USD 10,805 | USD 21,610 | USD 47,542 |
Lorry Diesel | USD 3,890 | USD 19,449 | USD 38,898 | USD 85,575 |
Add USD 0.00 toll per one-way trip to get total trip cost per journey.
Full Fuel Cost Comparison
All vehicle types × all fuel types for this route.
| Vehicle | km/L | Regular | Midgrade | Premium | Diesel | Fuel + Toll |
|---|---|---|---|---|---|---|
| Motorcycle | 40 | USD 387.15 | USD 436.99 | — | — | USD 387.15 |
| Car / SUV | 12 | USD 1290.50 | USD 1456.63 | — | — | USD 1290.50 |
| Van / MPV | 9 | USD 1720.67 | — | — | USD 2160.99 | USD 2160.99 |
| Lorry | 5 | — | — | — | USD 3889.78 | USD 3889.78 |
"Fuel + Toll" uses the primary fuel type for each vehicle. Toll is one-way estimate.
Today's Fuel Prices in United States
EIA weekly retail fuel prices used in all calculations above
Last updated: May 11, 2026. Prices are sourced from EIA weekly retail fuel prices.
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Common Questions: Seattle to San Antonio
How far is Seattle to San Antonio?
The highway distance from Seattle to San Antonio is approximately 3449 km. The estimated driving time is 45h 59m under normal highway conditions.
How much petrol does a car use from Seattle to San Antonio?
A typical car with 12 km/L mileage uses approximately 287.4 litres of petrol. At today's Regular price (USD 4.49/L), that costs USD 1290.50.
How much does a lorry spend on diesel from Seattle to San Antonio?
A lorry averaging 5 km/L needs about 689.8 litres of diesel for this route. At USD 5.64/L, the fuel cost is USD 3889.78 one-way.
What is the toll charge from Seattle to San Antonio?
The estimated one-way toll on this highway route is approximately USD 0.00. US tolls are state- and corridor-specific. Route-level estimates are kept at zero and the pages point to FHWA toll-facility references.
How much does a motorcycle spend on fuel from Seattle to San Antonio?
A motorcycle averaging 40 km/L uses about 86.2 litres. At today's Regular price, that's USD 387.15, making it the most fuel-efficient option for this route.
What is the total cost (fuel + toll) for a delivery van on this route?
A delivery van using diesel at 9 km/L needs 383.2 litres, costing USD 2160.99 in fuel. Add the USD 0.00 toll for a total one-way cost of approximately USD 2160.99.
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