When Buying Miles Makes Sense

Buying miles is a purchase with no refund path, so treat it like one. The price per mile matters, but two other numbers matter more: what the seat costs in cash, and which program books it.

Two purchases, three years apart

In September 2023, 200,000 Finnair Plus points cost 1,287.50 euros in a double-points sale: 100,000 bought and 100,000 added. At the exchange rate the card charged, that was about 0.685 cents per point. Finnair has since replaced points with Avios at a ratio of three points to two Avios, so those points became about 133,333 Avios, and each Avios cost about 1.03 cents. On November 7, 2026, 120,000 Avios cost $1,302.00, or 1.085 cents each. Finnair's Basic tier then added 3,000 Avios at its 12,000 tier-point milestone, so 123,000 Avios for $1,302.00 comes to 1.06 cents each. The two prices are within about 3 percent of each other. Both were about half the sticker price: the 2023 sale doubled the points, and this month's sale halves the price of Avios that list at 2.17 cents.

The 0.685 on the 2023 receipt looks cheaper than 1.06, and it is not. Finnair converted three points into two Avios, so a 2023 point became two thirds of an Avios, and the price per Avios is one and a half times the price per point.

The November purchase went through Rove's shopping portal, which is expected to pay 1,302 Rove Miles, one per dollar. Rove transfers to Finnair Plus at 1:1, so counting them with the Avios the total is 124,302, or about 1.05 cents each.

Buy in the right size

Finnair's discount depends on the size of one purchase: 30 percent for 5,000 to 19,000 Avios, 35 percent for 20,000 to 49,000, 40 percent for 50,000 to 84,000, and 50 percent for 85,000 to 200,000. That makes a bigger purchase cheaper than a smaller one at the edge of every tier. 85,000 Avios cost about 16 percent less than 84,000, whatever the base price is. If you need more than about 70,800 Avios, buying 85,000 costs less than buying the number you need, and you keep the rest. A 120,000-Avios purchase can also carry an account across Finnair's Basic-tier milestone, which pays 3,000 Avios at 12,000 tier points, if the account has not already reached it.

The test

Divide the seat's cash price by the miles it takes. That is what each mile is worth on that seat. Then compare it with what you paid. At or around 1 cent or less is the ceiling I use for a purchased mile, and the better version of the rule is a multiple: the seat's cash price should be at least twice what the miles cost you. The room covers taxes, a cash fare that falls, and the ordinary cost of being wrong.

A worked case: a Qatar business class seat from Doha to Washington Dulles that I priced on November 6 listed at 94,500 Avios with a Google Flights cash fare of $3,352 for the same flight.

The multiples are before the seat's cash taxes and fees, which come on top. The multiple is the number to watch, because it shows how much price you could be wrong by and still come out even. Without the sale, the same Avios cost $2,051 and the multiple falls to 1.6, below my line. The discount is what makes the purchase pass. The 40, 30, and no-discount rows apply this month's tiers to the 2.17-cent list price on the November receipt, without the milestone Avios or the Rove Miles. The Rove row counts the miles one for one with Avios and assumes they are transferred to Finnair Plus.

Cash and miles are not a clean comparison

A cash ticket earns miles of its own, and the cash fare in the table does not net that out, so the true saving is smaller than the multiple shows. Finnair, for one, pays Avios on the base fare of a cash ticket. The other side of the ledger is flexibility: award tickets usually carry better cancellation terms than cash tickets, especially on U.S. airlines. American's current pages say award tickets have no change fee, and that canceling before the first flight returns the miles and the refundable taxes and fees at no charge for up to a year after purchase. Finnair's award terms are less generous: changes carry a fee, and a cancellation fee applies. Read the terms of the program that will issue the ticket.

Four checks before you buy

1. Find the seat first. Award space is perishable. In my sweeps, one program pulled a single date within four hours on November 6, and after four days Qatar still listed 91 percent of what I found while JetBlue listed 7 percent. Finnair publishes a floor for its own flights: at least two business award seats on its long-haul flights to or from Helsinki, with a few listed exceptions. Without a published floor, buy after you have a specific seat.
2. Know where the miles have to land, and how old the accounts are. Finnair does not link to Qatar directly. The route is Finnair to a British Airways Club account to Qatar. Finnair requires its account to be at least 30 days old before it links, Qatar's linking feature opens 30 days after that account was created, both sides need matching names, and Finnair requires two-factor authentication on both accounts. Finnair says a link can be undone only through British Airways. An account opened in time for the sale can still be too new to move the miles.
3. Allow for the credit delay. Finnair says purchased Avios arrive one to three days after the purchase. A seat that vanishes in four hours does not wait.
4. Price the alternative. Chase is running a 30 percent bonus to British Airways, Iberia, and Aer Lingus, which I saw on my own Chase account on November 2. At a cent per Ultimate Rewards point, that is about 0.77 cents per Avios. That is a different currency and a different cost, because it spends points instead of cash, but it is the comparison the bonus invites.

The same Avios, three prices

The program that books the seat sets the price. Three comparisons, from the programs' own charts and a seat search I ran on November 9.

Finnair's own flights. Finnair's printed chart prices business class between North America and Helsinki at 62,500 Avios one way for New York, Chicago, Dallas, Miami, Seattle, and Toronto, plus a surcharge of 100 euros. My search found 47 Finnair-only nonstops at that price through October 2027, 40 of them in October, the far end of the booking window, with taxes and fees of $145.90 on the U.S. flights. The same search showed 490 itineraries that connect to British Airways or Iberia at 95,000 to 128,000 Avios. On British Airways' own flights to London I found 88,000 to 99,000 Avios plus about $497.50 in taxes and fees.

Iberia. Finnair's chart prices Iberia business class between Europe and North America at 75,000 Avios. Iberia's own program, in my search, listed nonstops to Madrid at 40,500, 50,500, 59,000, and 74,000, mostly 59,000 and 40,500, with taxes and fees near 110 to 120 euros. At 1.06 cents, 75,000 Avios cost $794, 59,000 cost $625, and 40,500 cost $429. Finnair allows a link to Iberia Plus.

Qatar. Finnair's chart prices Qatar business class between North America and Qatar at 130,000 Avios. Qatar's own program listed the Doha to Dulles flight from my November 6 post at 94,500 in the same search on November 9, which is 27 percent fewer. At 1.06 cents per Avios, that is about $1,000 in Avios instead of $1,376.

The Avios are the same. The seat's price is not, and the booking program is the lever. Decide where you will book before you decide how many to buy.

Limits

The sale ends November 16 at 4:59 pm Eastern. It applies to Finnair Plus accounts opened before October 30 and to purchases for yourself, not gifts. The prices per Avios come from the receipts for the two purchases. The seat counts and prices for Iberia and Qatar come from a third-party seat-search tool, not from those programs' own sites, and they change by the hour. This is how I run the numbers, not advice to buy.