Points or Cash? A Simple Way to Decide How to Pay for a Flight

Points are a balance you can spend only once

Frequent flyer miles and credit card points feel like a bonus. Once you have them, they are a currency, and spending them on one trip means you cannot spend them on another. The goal is not to use points whenever a screen offers them. The goal is to use them when they replace a cash fare you would rather not pay, and to pay cash when the award is a weak trade.

Nothing in this article tells you what a point is 'worth' in the abstract. Published valuations differ, and they are estimates made by other people about redemptions you may never book. The method below uses only the two prices in front of you: the cash fare and the award fare for the same trip.

A cents-per-point sum you can do on the booking page

Take the cash price of the flight, subtract the taxes and fees you would still pay on the award ticket, and divide by the number of points required. The result is how many cents of cash each point is replacing on this redemption.

Here is the arithmetic with made-up numbers, so you can see the steps and not a real fare. Suppose the cash ticket is 400 dollars and the award is 25,000 points plus 6 dollars in taxes. The points are standing in for 394 dollars. Divide 394 by 25,000 and you get about 1.6 cents per point. That figure does not tell you to book. It tells you the rate on this offer, which you can compare with another offer for the same points, or with simply paying cash and keeping the balance.

Use the same itinerary on both sides

Compare the same airports, the same dates, and the same cabin. An award in a higher cabin is a different product from a cash economy ticket, and dividing one by the other flatters the points. If you would not buy the expensive cabin for cash, do not use that cash price as the numerator. Also include bag fees you would pay on one version and not the other. Bag fees and the true cost of a fare is the checklist for those extras.

Your own benchmark, not a published one

Your benchmark is the value you could reasonably get from those points on a redemption you would actually use. For some programs that might be a fixed rate in a travel portal or a cash-back option. For others it is the rate you have seen on flights you take. If this redemption is well above the rate you usually get, points are attractive. If it is below, paying cash and saving the points is usually the cleaner choice.

You do not need a precise personal number to use the test. If one award replaces a very expensive cash ticket you were going to buy anyway, and another award replaces a cheap sale fare, the first is doing more work. How to read a fare without chasing it helps you decide what cash price you were actually willing to pay, which is the only cash price that belongs in the comparison.

What the cash ticket still earns

A cash ticket often earns miles and elite qualifying credit, while an award ticket usually does not, or earns less. If you are working toward a status level you will use, that difference belongs in the comparison as a rough adjustment, not as a reason to ignore a poor award. Read the program's earning chart for the fare you would buy. A basic economy cash fare may earn little, which is one of the restrictions in what basic economy leaves out.

Fees, surcharges, and the freedom to cancel

Award tickets can carry taxes, carrier-imposed surcharges, and booking fees. Those amounts vary by program and route. Some programs add large surcharges on certain international flights, which can erase the reason to spend points. Read the full cash due on the award before you transfer anything.

Flexibility often favours points. Many programs let you cancel an award and redeposit the miles for free or for a modest fee, which can be more generous than a cheap cash fare. That flexibility has value if your dates might move. Read the current rules, because programs change them. A cash fare's change rule is a separate question, and for a new U.S. booking the 24-hour window may give you a day to undo either purchase if you booked far enough ahead.

Transfers are usually one way

Many credit card programs let you transfer points to airline programs. The same flight can cost a very different number of miles depending on which program you book through. Before you transfer, search for award space in the program you plan to use and confirm the price, because transfers are usually irreversible. Transfer times vary. Some are instant and others take longer, and the seat can disappear while you wait. If the seat is scarce, hold it first where the program allows a hold, then transfer.

Points plus cash, and the trips where points stretch

Some programs offer a points-plus-cash option. Run the same division on the points portion: cash saved, divided by points spent. These mixes are often a weak rate, and occasionally they are a way to finish a balance that is slightly short. Do the division anyway. A shortfall is not a reason to accept a poor rate without seeing it.

Points tend to replace more cash when cash prices are high: peak travel, last-minute trips you cannot avoid, and premium cabins you have decided to buy. Cash is often the better payment for a cheap flight where the cents-per-point figure is low, and when you want the qualifying credit a paid ticket earns. Points can also be devalued when a program changes its award prices, which is a reason not to hoard them forever, and not a reason to spend them on the next screen you see.

A decision you can finish

Price the flight in cash and in points, including taxes and fees. Divide. Compare that rate with another real use of the same points, or with paying cash and keeping them. Adjust, roughly, for what the cash ticket would earn and for which option is easier to cancel. If the answer is close, choose the option that leaves you able to take the trip you already care about.

The point of the method is to avoid emptying a large balance on a flight that would have been inexpensive in cash, and then having nothing left when a fare you cannot comfortably pay shows up. When you want to see the cash side first, start with the flight search and only then open the award calendar.