Air France lets you buy miles directly through their loyalty program, but the price per mile is almost always higher than earning them through a card
Air France-KLM's frequent flyer program, Flying Blue, sells miles to members at rates that typically range from 1 cent to 1.5 cents per mile, depending on the promotion running that month. You can purchase miles in increments starting at 1,000 miles, and the program often runs bonus offers — usually 25% to 50% extra miles on top of what you buy. Even with a bonus, buying miles directly costs more per mile than what you'd earn through a co-branded credit card, which usually awards 1 to 3 miles per dollar spent.
The main reason to buy miles is to reach a specific redemption goal when you're short by a small amount — say you need 5,000 more miles for a flight leaving in two weeks and don't have time to earn them through spending. Outside that narrow use case, buying miles is rarely the most cost-effective path to a ticket.
Key Takeaways
- Air France sells Flying Blue miles directly through their website at rates between 1 and 1.5 cents per mile, often with temporary bonuses of 25% to 50% extra miles.
- A co-branded Air France credit card typically earns 1 to 3 miles per dollar spent, which works out to a lower cost per mile than buying them outright.
- Buying miles makes sense only when you're a small amount short of a redemption and lack time to earn them through regular spending.
- Air France frequently runs promotions on mile purchases, so checking their website before buying can save you 25% or more on the per-mile cost.
How to purchase miles through Flying Blue
Log into your Flying Blue account on Air France's website and navigate to the "Buy Miles" section under your account menu. You'll see the current price per mile and any active bonus offer. Select the number of miles you want to buy — the minimum is 1,000 — and proceed to checkout using a credit card or debit card. The miles post to your account within 24 hours.
Air France charges in your local currency if you're outside the United States, so the per-mile cost may vary slightly depending on exchange rates. The purchase itself is not refundable, and miles purchased this way expire after 24 months of account inactivity (no flights, no purchases, no activity on any Air France or partner airline account).
When buying miles costs less than the headline price
Air France runs promotions almost constantly, and the bonus structure can significantly lower your effective cost per mile. A 50% bonus means you're buying 1.5 miles for the price of 1 mile, which cuts your per-mile cost by a third. Before you buy, check the Flying Blue website to see what promotion is currently running — the bonus percentage and the base price per mile both change month to month.
Some promotions are tiered: buying 10,000 miles might give you a 25% bonus, while buying 50,000 miles gives you 50%. If you're planning to buy anyway, timing your purchase to coincide with a higher-tier bonus saves money. You can also set up a Flying Blue account alert to notify you when a promotion reaches a certain bonus level, though Air France doesn't offer this feature directly — you'd need to check manually or use a third-party flight deal tracker.
Comparing the cost of buying miles to earning them through a card
The Air France American Express card earns 3 miles per dollar on Air France and partner airline purchases, and 1 mile per dollar on all other spending. At 3 miles per dollar, you're earning miles at an effective cost of about 0.33 cents per mile — far below the 1 to 1.5 cents per mile you'd pay to buy them outright. Even on non-bonus categories at 1 mile per dollar, you're earning at 1 cent per mile, which matches the best buying prices only when Air France is running a 50% bonus promotion.
The card also comes with an annual fee (currently $150), so the math only works if you're spending enough to offset that fee through rewards or benefits. If you're considering buying miles specifically to reach a redemption, first calculate whether the cost of the miles plus any card annual fee exceeds what you'd pay for the same flight as a paid ticket. Sometimes it does.
How many miles you need for common Air France redemptions
Air France uses a dynamic pricing model for award flights, meaning the mile cost varies by route, season, and how far in advance you book. A domestic U.S. flight typically costs 25,000 to 50,000 miles one-way in economy, while a transatlantic flight ranges from 60,000 to 100,000 miles one-way. Premium cabin awards (business and first class) start at 120,000 miles and can exceed 300,000 miles for long-haul first class.
These prices are not fixed — the same route can cost different amounts depending on demand and availability. Air France publishes a rough award chart on their website, but the actual price you see when you search is what you'll pay. This unpredictability is another reason buying miles to top up a redemption can backfire: you might buy 10,000 miles thinking it will get you to your goal, only to find the flight now costs 15,000 more miles than it did last week.
Alternatives to buying miles when you're short
If you're close to a redemption but don't want to buy miles, consider whether you can earn them faster through a sign-up bonus on a new card. The Air France American Express card currently offers a sign-up bonus (the amount changes periodically), which you could earn in full within a few months of opening the account if you meet the spending requirement. This works only if you have time before your travel date and can legitimately meet the spending threshold.
Another option is to look for a paid ticket instead. Award pricing is highest during peak travel times, and sometimes a paid economy ticket costs less than the miles-plus-taxes you'd pay for an award seat. Use Google Flights or Kayak to compare the cash price against the mile cost, factoring in any taxes and fees Air France charges on award bookings. If the paid ticket is cheaper, buy it — you can always earn miles back on future spending.
What happens to miles you buy if you don't use them
Flying Blue miles expire 24 months after your last account activity. Activity includes taking a flight on Air France, KLM, or a partner airline; making a purchase with a Flying Blue co-branded credit card; or transferring miles to or from a partner program. If your account goes inactive for 24 months, all miles — including ones you purchased — are deleted with no refund option.
This is why buying a large stash of miles without a specific redemption in mind is risky. If you buy 100,000 miles and then don't fly or use your card for two years, those miles vanish. The safest approach is to buy miles only when you have a confirmed booking or a very near-term travel plan.
Frequently Asked Questions
Can I buy miles as a gift for someone else?
No, Air France does not allow you to purchase miles and transfer them to another person's account. Miles can only be bought by the account holder and must remain in that account. You can transfer miles to a family member's account after you've purchased them, but the purchase itself must be made by the person whose account receives the miles.
Do I pay taxes on miles I buy?
Yes, you pay sales tax on the purchase of miles in most U.S. states, calculated on the dollar amount you spend. The tax rate depends on your state and local rules. Air France will show the tax amount at checkout before you complete the purchase.
What if I buy miles and then find a cheaper flight?
Miles purchased through Flying Blue are non-refundable. If you buy miles to book a flight and then find a cheaper paid ticket, you cannot get your money back. You can hold the miles for a future trip, but they'll expire if your account goes inactive for 24 months.
Are there any restrictions on how many miles I can buy at once?
Air France does not publish a maximum purchase limit on their website. In practice, you can buy in large increments, though if you're purchasing an unusually large amount, Air France's fraud detection system may flag the transaction for review before processing it.