Flight Fuel Cost Calculator
What the trip costs in fuel: burn × price, per-person and per-mile splits, and the honest comparison against driving the same journey.
Fuel is the visible half of flying's cost — engine reserves, maintenance and insurance ride along invisibly at roughly equal magnitude. The fair speed comparison, meanwhile, includes the airport drives: GA wins on trips where straight lines and schedule freedom matter.
Formula
⚠️ For flight planning and education only — verify with official sources, your POH/AFM and certified equipment. Not for primary navigation.
Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.
What the trip costs in fuel: burn × price, per-person and per-mile splits, and the honest comparison against driving the same journey.
About Flight Fuel Cost Calculator
“What did that flight cost?” deserves a number, not a wince. This calculator prices the fuel honestly — block-ish time with a climb allowance, your real flow, today's 100LL price — then splits it per person and per mile, and runs the comparison everyone actually wants: the same trip by road, with road mileage's detours and mogas prices both accounted for. Fuel cost is the trip's marginal truth, even while ownership math looms larger.
How to use Flight Fuel Cost Calculator
- 1Enter — sensible defaults are pre-filled so you see a worked result immediately.
- 2Read the live results: .
- 3Check the "With your numbers" line to see the formula cost = (time × flow + allowance) × price; car comparison at 32 mpg on mogas substituted step by step.
- 4Adjust inputs (or flip the unit toggle) until the scenario matches yours, then copy or share the result.
Why use Flight Fuel Cost Calculator?
- ✓Instant, free and private — every calculation runs in your browser, nothing is uploaded
- ✓Built on the published formula cost = (time × flow + allowance) × price; car comparison at 32 mpg on mogas with sources cited on the page
- ✓Fuel is the visible half of flying's cost — engine reserves, maintenance and insurance ride along invisibly at roughly equal magnitude. The fair speed comparison, meanwhile, includes the airport drives: GA wins on trips where straight lines and schedule freedom matter.
- ✓Switch units, tweak any input and watch every result update live
Frequently asked questions
Is fuel really the right number to quote for a trip's cost?+
It's the honest marginal cost — what flying this trip added to your outflow if the airplane exists anyway. The full hourly cost (reserves for engine and maintenance, insurance, hangar amortized) typically runs 2–4× fuel alone and governs ownership decisions. Quote fuel for 'should we fly there this weekend,' full cost for 'should I own an airplane.'
How can cost-sharing work legally for private pilots?+
Under 14 CFR 61.113(c), a private pilot may accept a pro-rata share of fuel, oil, airport expenditures and rental — paying no less than their own equal share, with a common purpose for the flight. Two passengers may legally split this calculator's fuel figure three ways with you; they may not pay your whole bill, and you may not advertise seats. Cost-sharing apps live exactly on this regulation's edge — know it cold.
Why does the car comparison use different fuel math?+
Three honest asymmetries: roads wander (statute road miles exceed great-circle nautical miles — the tool asks for both), cars sip cheaper fuel (mogas runs roughly half of 100LL per gallon), and they sip less of it (32 mpg assumed). GA's rebuttal is time and the straight line: the comparison is fair only when both columns are.
How do I cut the per-trip fuel number?+
In order of leverage: lean correctly in cruise (rich-of-peak sloppiness wastes 10–15%), fly the economy power setting on non-urgent legs (our specific-range tool prices the trade), choose fuel stops by price apps when a stop happens anyway (airport prices spread 30%+ within an hour's flying), and fill more seats — per-person cost is the one passengers feel.
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