Every points site publishes a valuation chart. A SkyMile is worth 1.2 cents, a Membership Rewards point 2.0, an IHG point 0.5, updated monthly to one decimal place, as if measured in a lab.
Useful as a rough compass. Useless as an answer, because the only valuation that matters is specific to a single redemption:
cents per point = the cash price you would actually have paid ÷ the points you spent.
Every word of that sentence is load-bearing, and two of them do the heavy lifting.
”Would actually have paid”
Book Thai first class from Tokyo to Bangkok for 60,000 points and the fare page says that seat sells for $2,500+. Divide and you get four-plus cents a point. But would I have paid $2,500 cash for a six-hour flight? Absolutely not. And that’s fine, as long as you’re honest about what the alternative was.
The sticker-price trap runs the other way too. One-way international business fares are often inflated nonsense nobody pays (I flagged this in the Delta SkyMiles guide), so dividing by them flatters every redemption. The honest denominator is the fare you’d genuinely have bought: sometimes the premium cabin, sometimes premium economy, sometimes “I wouldn’t have taken this trip at all,” which values the redemption at whatever the experience is worth to you.
The clean version of the math is when points replace a cash purchase you were making anyway. Flying Blue’s 45,000-mile promo seats to Europe against a $2,500–5,000 fare, or the Air Europa lie-flat at 43,000 miles plus $33 against even an economy ticket. Both clear the bar under any honest accounting.
Subtract the cash. All of it.
An award is points plus money: taxes, fees, sometimes several hundred dollars of surcharges. The formula is (cash price − cash you paid) ÷ points. A “29,000-point” transatlantic seat with $589 in fees is a very different object than the headline suggests. Forget the subtraction and every high-fee program in Europe looks like a miracle.
The floor and the ceiling
The floor: most flexible currencies cash out around a cent per point. Any redemption below that is you paying the bank for the privilege. The doubled-into-IHG trade at roughly a cent of hotel value per Chase point is the canonical floor-scraper dressed as a deal.
The ceiling matters less than you’d think. Five cents a point on a seat you didn’t want is worse than two cents on a trip you’d have paid for. Chasing the ratio for its own sake is how people fly to places they don’t want to go, expensively, and call it winning.
And flexibility carries a premium. A point in Chase or Amex is worth more than the same point stranded in one airline, because it’s still undecided. This is precisely why the loudest transfer bonuses are usually the worst trades: the percentage is the fee you’re paid for giving the flexibility up.
The whole method, pocket-sized
Price the trip you’d honestly take, in cash. Price it in points, plus the fees. Divide. Above ~1.5 cents on a flexible currency, you’re doing fine; above three, you’ve found a sweet spot; below one, stop.
Then close the spreadsheet and take the flight. The arithmetic exists to serve the trip, never the other way around.
