How to estimate the cost of owning a plane
The useful way to think about aircraft ownership cost is to split it into fixed costs you pay whether you fly or not, and variable costs that only happen when the Hobbs meter runs. Add them up for a year, then divide by the hours you actually fly. That all-in cost per hour is what you compare with a wet rental rate, a club, or a partnership.
Fixed costs usually include hull and liability insurance, hangar or tie-down rent, the annual inspection, database and subscription fees (a GPS navigator database, ForeFlight or Garmin Pilot, chart subscriptions), and the cost of money — either the loan payment on a financed airplane or an opportunity cost on a cash purchase. Variable costs include fuel, oil, a reserve for the next engine overhaul (overhaul cost divided by TBO hours), a similar reserve for the propeller, and a maintenance reserve for the unscheduled work that shows up between annuals.
Engine and propeller reserves
A Lycoming or Continental overhaul on a four-cylinder trainer often lands in the mid-five figures; a propeller overhaul is less but still real money. Dividing that bill by the manufacturer’s TBO (often 1,800 or 2,000 hours for the engine) gives a dollars-per-hour reserve. Many owners keep that money in a separate account so the overhaul is not a surprise. TBO is a recommended interval, not always a hard limit, and a mid-time engine should use a remaining-hours figure rather than a full TBO.
Breakeven versus renting
Owning becomes cheaper than renting, on an hourly basis, when
hours = fixed annual cost / (rental rate − variable cost per hour)
If your variable cost is already higher than the rental rate, no number of hours will close the gap — you would be better off renting for the flying, or you need cheaper fuel, a cheaper hangar, or a partner. Hours flown are the biggest lever on the all-in rate, because they spread the hangar and insurance over more flights.
Partnerships and clubs
A two- or four-person partnership typically splits the fixed costs equally and has each partner pay fuel, reserves, and hourly maintenance for the hours they fly. Flying clubs add a membership fee and a dry or wet hourly rate. This page models the equal-share partnership; it does not replace a written operating agreement.
Worked example
A $200,000 Cessna 172 bought for cash, 5% opportunity cost, $2,400 insurance, $450 a month hangar, a $2,800 annual, $1,200 in subscriptions, 8.5 gph at $6.50 a gallon, $1/hr oil, a $30,000 engine overhaul at 2,000 hours, an $8,000 propeller at 2,000 hours, a $20/hr maintenance reserve, and 100 hours a year:
- Fixed costs are $21,800 a year, including $10,000 of opportunity cost.
- Variable costs are $95.25 an hour, or $9,525 a year.
- The all-in cost is $31,325 a year, or about $313 per hour.
- Against a $180/hr wet rental, the breakeven is about 257 hours a year — more than this owner flies, so renting is cheaper on hourly cost at 100 hours. Drop the opportunity cost, or add three partners, and that conclusion can change.
Frequently asked questions
How much does it cost to own an airplane per hour?
Divide a year’s fixed costs by the hours you fly, then add fuel, oil, engine and propeller reserves, and a maintenance reserve. A typical 172-class owner at 100 hours a year often lands in the mid-hundreds of dollars an hour, but hangar rent and hours flown move that number a lot.
What is the difference between fixed and variable aircraft ownership costs?
Fixed costs are paid even if the airplane does not fly: insurance, hangar, the annual, subscriptions, and financing or opportunity cost. Variable costs scale with hours: fuel, oil, reserves, and unscheduled maintenance.
How many hours do I need to fly to make owning cheaper than renting?
Divide the fixed annual cost by the difference between the wet rental rate and your variable cost per hour. If the variable cost is already higher than the rental rate, owning will not win on hourly cost.
How are costs split in an aircraft partnership?
A common arrangement is equal shares of the fixed costs, with each partner paying variable costs for the hours they fly. Real agreements also cover scheduling and a reserve account.