Flying Blue just dropped its October Promo Rewards, and the timing is almost criminal for anyone sitting on Amex, Chase, or Citi points. Book by October 31 for travel through March 31, 2027, and you’ll see 25% off select Air France and KLM awards — including business class from the US to Europe starting at 45,000 miles one-way on routes like Seattle and Mexico City.

That’s the Light fare, of course. No lounge, stricter baggage, zero changes. But for a one-way lie-flat seat across the Atlantic with decent food and decent wine, it’s hard to complain. Normal saver pricing hovers around 60,000 miles; the promo knocks it to 45k on the best dates. Stack this month’s transfer bonuses and the math gets stupid good.

The Transfer Bonuses Make It Filthy

Amex Membership Rewards is running a 25% transfer bonus to Flying Blue through October 31. Your 40,000 MR turns into 50,000 miles. Suddenly that 45,000-mile business award costs you just 36,000 points. Capital One is throwing 20%, Rove up to 40%. Chase and Citi are sitting this one out at 1:1, but if you have MR, this is the play.

At a conservative 1.8 cents per MR point, you’re looking at roughly $650 in points for a business-class ticket that sells for $2,500–$4,000 in cash. Even after €300–€500 in taxes, the effective cost per mile lands north of 4 cents. That’s not “good.” That’s the kind of redemption that makes you feel like you’re stealing from the airline.

Which Routes Actually Matter

US to Europe business on Seattle and Mexico City is the headline at 45,000 miles Light. Availability is thin but real on off-peak winter dates. Paris and Amsterdam connections are the backbone; expect CDG or AMS as the hub. Standard awards on the same flights show around 56,000–60,000 miles under the promo — still a discount on the new 75,000-mile baseline.

Longer-haul options are more mixed. Europe to Beijing business starts at 63,750 miles. Chicago to Shanghai is an oddball at 86,250 — interesting only if you hate connections or love layovers in Europe. Kenya (Nairobi) and Mauritius appear mostly in premium economy or economy from the US (48,750 PE from New York to Nairobi, 30,000 economy to Mauritius), not the screaming business deals the query hoped for. They’re decent but not the 25% business-class magic on transatlantic.

The real edge cases are the ones that sell out first: limited dates on popular gateways, the better Standard fares if you value lounge access and flexibility. Promo space evaporates within days of announcement. By the time you read this, the lowest-hanging fruit may already be gone.

Opinion: Transfer Now, Book Immediately

This is not a “watch and wait” situation. Flying Blue award space is dynamic and promo buckets are finite. The 25% transfer bonus ends the same day as the booking window. Transfer only what you need for specific dates you’ve already found available. Over-transferring is how you end up with 80,000 miles you’ll never use before devaluations hit.

Don’t romanticize the Light fare. If you need the lounge or the ability to change plans, pay the extra miles for Standard. The difference is often only 10–15k more after the discount. For a pure one-way power move in January or February, though, 36,000 MR for business class to Paris is the kind of thing that keeps this hobby addictive.

Log into your Flying Blue account (or create one), search the promo routes on Air France or KLM sites, and lock in dates before the end of the month. The window is closing. Good hunting.