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Road Trip Cost Calculator

The LA → Grand Canyon → Las Vegas loop (1,030 mi across CA · AZ · NV) in an SUV at 24 mpg costs about $210 of gas — 42.9 gallons at the route's state average of $4.90/gal ($5.80 / $4.18 / $4.71, California the expensive one). Tolls are zero on this loop, two modest hotel nights ($110/night) add $220, so the grand total is $430 — $215 per person for a party of two, over roughly 2.3 driving days. Nine more preset routes (NYC→DC with $40 of tolls, Chicago→Niagara at $45) recompute instantly in the tool below.

Gallons (SUV 24 mpg)42.9
Route gas average$4.90/gal — $5.80 / $4.18 / $4.71
Hotels + tolls$220 + $0
Total / per person$430 / $215

Inputs

470 mi · CA · $5.80/gal avg

2people
2nights
$

Modest $110/night default, before lodging taxes and resort fees.

Default scenario: PCH · SUV · 2 people · 2 nights — edit inputs
Estimated trip total — Pacific Coast Highway: SF ↔ LA
$334
≈ 1,251 SAR (pegged rate)Approximate FX rates — as of September 2026 · FX rates are approximate, for planning only.
Gas
$114
19.6 gal @ $5.80/gal
Tolls
$0
toll-free route
Hotels
$220
2 × $110
Driving days
1.0
470 mi ÷ 450/day
Formula: 470 mi ÷ 24 mpg × $5.80/gal (route state average) + tolls + 2 nights × $110
Per person (÷2)$167
≈ 625 SAR (pegged rate)

Approximate 2026 state gas averages; excludes national-park entry, car rental and food.

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How the cost is computed

Enter your trip details to get travel figures based on current, real-world numbers.

  1. 1

    Step 1

    Pick one of 10 preset routes — it sets the distance, the states crossed and each state’s 2026 average gas price.

  2. 2

    Step 2

    Pick a car class (compact 32 mpg, SUV 24, pickup 19) — miles ÷ mpg gives gallons.

  3. 3

    Step 3

    We add the route's estimated tolls and your hotel nights ($110/night default, editable), then roll out the gas + tolls + hotels grand total and the per-person split.

Use Cases

Plan travel for your destination with your own numbers

Open your destination planning questions directly: enter the details the tool asks for and it computes the answer from its dataset rather than an average, so the result reflects the inputs you actually care about.

Re-check before you pay

Re-run the numbers whenever a price, date or party size changes; the tool keeps every assumption visible, so a revised total takes seconds and stops one stale figure from leaking into bookings or shared plans.

Tips

  • 1

    Every figure this Road Trip Cost Calculator page computes is a snapshot of current your destination data: re-run it close to booking, save the inputs you used, and refresh only what moved when prices shift.

  • 2

    Prices behind this travel planner move with season and local events in your destination: re-run the calculation close to your booking date instead of trusting a figure saved weeks earlier, because seasonal swings can move totals by a third or more.

  • 3

    Check official sources for your destination visa, tax, or fee rules before relying on any computed figure (Road Trip Cost Calculator) — travel rules change with little notice, and a calculator cannot know about a decision announced last week.

Common Mistakes

  • Copying Road Trip Cost Calculator results between trips without re-entering the inputs: a change of dates, party size, or season silently invalidates every downstream number for your destination. Re-run with each trip's own values.

  • Ignoring visa lead times before committing to the Road Trip Cost Calculator: processing queues stretch in holiday seasons, and transport bought ahead of an approval is money at risk. Confirm entry status for your destination first, then book.

FAQs

How much gas money do I need from LA to Vegas?

Straight up I-15 it's about 270 miles each way: roughly $45–50 of gas one-way in an SUV (24 mpg) or about $35 in a compact at 2026 prices — call it $70–100 round trip. The fuller LA→Grand Canyon→Vegas loop preset here is 1,030 miles, ≈43 gallons and ≈$175 of gas in an SUV, blending $4.70 California, $3.55 Arizona and $4.00 Nevada pump prices. Fill up before leaving Nevada — California is the expensive side of that drive.

Are US tolls cash or E-ZPass?

Most East Coast corridors (NJ Turnpike, I-95 into DC) no longer take cash at all — cameras read your plate and the bill arrives by mail or through your rental company at a markup. An E-ZPass in the East, a SunPass in Florida or a FasTrak in California is usually the cheapest and fastest way through. Western routes like the LA→Grand Canyon→Vegas loop are toll-free to begin with.

What's the rental-car toll program trap?

Rental companies sell toll programs at $10–15 per day, billed every rental day even when you cross no tolls — a two-week rental can rack up $100–150 against $20–40 of actual tolls. Decline it and pay the plate invoices yourself, carry your own transponder, or route toll-free. Each route here shows its realistic toll estimate so you can compare it to the daily-fee price.

What are the cheapest days of the week to drive?

Fill up Monday or Tuesday: pump prices tend to rise into Thursday–Friday weekend demand and ease early the next week — a weekly swing of 10–25¢/gal, which is real money on a 40-gallon trip. Hotels follow the same rhythm: Sunday–Thursday nights run cheaper than Friday–Saturday. And avoid Memorial Day, July 4th and Labor Day weekends, when gas and roadside rates spike together; shifting a trip by a day or two usually saves more than hunting for the cheapest station.

How much do gas prices differ between states?

The 2026 national average sits near $2.90–3.00/gal, but classic road-trip states run above it — state taxes and fuel blends swing the pump from about $4.70 in California and $4.30 in Washington down to roughly $3.20 in Texas and $3.30 in Ohio. Practical rule: fill the tank before leaving the cheap states. The calculator blends each route’s state prices — the LA→Grand Canyon→Vegas loop averages out near $4.10/gal.

Should we drive or fly for this trip?

Rule of thumb: driving wins with 2 or more people under ~500 miles one-way. NYC→DC costs about $75 in gas and tolls for the entire car versus $150–250 per person by air before bag fees — compare the per-person total from this tool against a typical fare before you book. Cross-country (LA→NYC), flying wins practically every time. And remember the car is your transportation for the whole trip, not just the intercity leg.

Are national park entry fees included?

No — park entry is not in the totals. Most major parks (Grand Canyon, Zion, Yosemite) charge $35 per vehicle for a 7-day pass, and the $80 annual America the Beautiful pass pays for itself from the third paid park onward. Routes like Vegas→Zion or the Grand Canyon loop need that pass added on top of the grand total shown here.

Does this work for an electric car (EV)?

Not directly — the math here is gallons × each state’s price per gallon. An EV needs kWh per mile × charging price: 2026 DC fast charging at $0.35–0.55/kWh behaves like gas under ~$2/gal, though charging stops eat into your daily mileage. Treat the gasoline figure as an upper bound — road-trip charging typically runs 40–60% cheaper.

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