About Roadtrip Budget Planner

Plan roadtrip budgets with fuel, accommodation, and food costs. Part of the DevTools Surf developer suite. Browse more tools in the Calculators collection.

Use Cases

• Plan a cross-country drive budget broken down by fuel, lodging, food, and activities.
• Compare driving vs. flying cost for a trip between two cities including car rental.
• Budget a camping road trip with variable fuel costs based on daily distance driven.
• Plan a multi-destination trip with per-leg cost breakdowns.

Tips

• Calculate fuel cost using actual driving range, not manufacturer EPA estimates — real-world highway mpg is typically 10–15% lower, especially with loaded vehicles or hilly terrain.
• Pre-book accommodation for the first and last nights at minimum; mid-trip flexibility can save 15–25% by choosing accommodation based on daily progress.
• Budget a 10–15% contingency line for unexpected costs: parking, tolls, entrance fees, and vehicle issues are systematically underestimated.

Fun Facts

• The US Interstate Highway System, which enables modern road trips, was authorized by the Federal Aid Highway Act of 1956 and took over 35 years to complete, finishing in 1992.
• AAA reports that Americans take over 500 million road trips annually; the average domestic road trip is 2.5 days and 600 miles.
• Gas prices account for the most volatile line item in road trip budgets: US average gas prices ranged from $1.87 to $4.87 per gallon between 2020 and 2022 — a 2.6x swing.

FAQ

How do I estimate fuel cost accurately?

Divide total miles by your vehicle's actual highway mpg, multiply by current average gas price. For precision, use GasBuddy's route-based price data rather than a national average.

Is driving or flying cheaper for long distances?

For solo trips over 500 miles, flying is usually cheaper when accounting for fuel, food, lodging, and time. For groups of 3–4 sharing a vehicle, driving is often cheaper for trips under 1,500 miles.