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If you're looking to redeem your credit card rewards points for top value, transfer bonuses are opportunities you shouldn't overlook. American Express' new 20% transfer bonus to Air France-KLM Flying Blue tees you up to book some fantastic award flights for a little less.
Here's what you need to know about this rare Amex-Flying Blue transfer bonus and some of the best ways to maximize it before this offer takes flight on October 31, 2025.
Page Contents
Amex Membership Rewards to Flying Blue 20% Transfer Bonus
Through October 31, 2025, you'll get 20% bonus miles when you transfer Membership Rewards to your Flying Blue account. Typically, you'll receive 1,000 Flying Blue miles for every 1,000 Membership Rewards points. But, for a limited time, you'll receive 1,200 miles per 1,000 points transferred.
Related: How to Transfer Amex Points: A Step-by-Step Guide
Key terms
- Receive 20% additional miles on transfers to the Air France-KLM Flying Blue loyalty program.
- You must be enrolled in Air France KLM Flying Blue in order to participate in this offer.
- This transfer bonus will end at 11:59 p.m. MT on October 31, 2025.
- Once you have transferred Membership Rewards points, miles cannot be transferred back to your Membership Rewards account.
- The minimum transfer you can make is 1,000 Membership Rewards points and the maximum transfer is 999,000 points.
- Transfers are typically immediate but Amex notes to allow up to 48 hours for the transfers to complete.
Best Ways to Redeem Flying Blue Miles
Flying Blue is the frequent flyer program of two major airlines: Air France and KLM. Naturally, you can use Flying Blue miles to book awards on either carrier. Plus, you can book awards on several SkyTeam partner airlines as well as several non-alliance partners. Better yet, Flying Blue has several sweet spots that are made 20% sweeter because of this transfer bonus. Some of our favorite examples include:
- Short-haul Delta flights (think Los Angeles to Las Vegas) for 5,000 Flying Blue miles one-way (9k Amex points round-trip).
- Air France/KLM business class awards to from North America to Europe from 60,000 Flying Blue miles (50k Amex points).
- KLM business class from the U.S. to South Africa via Amsterdam for 115,000 Flying Blue miles (96k Amex points).
One of the best ways to maximize this transfer bonus is by pairing it with Flying Blue’s monthly Promo Rewards. With the bonus in play, discounted economy awards to Europe that cost 18,750 miles drop to just 16,000 Amex points. And if you’re interested in business class, a 45,000-mile ticket would only set you back 38,000 Amex points.
Flying Blue Miles Expiration Policy
Flying Blue miles will expire if you don't have qualifying activity in the past 24 months. Unfortunately, transferring your Amex points to Flying Blue doesn't count as qualifying activity. You'll need to take a flight with Air France, KLM, or one of Flying Blue's SkyTeam partners if you are looking for a way to extend your mileage expiration. Or, you can extend the validity of your miles by spending on a Flying Blue co-branded credit card, like the Air France KLM World Elite Mastercard®.
Because of these policies, be extra careful that you don't transfer Amex points to Flying Blue if you won't be able to use these miles over the next two years.
Want help keeping track of your Flying Blue expiration? Add your Flying Blue account to AwardWallet. You will be emailed if your Flying Blue expiration date is getting near.
Flying Blue Transfer Bonus History
American Express has offered more than a dozen transfer bonuses to Flying Blue over the past several years. However, these opportunities are few and far between; it's been over a calendar year between the launch of the current transfer bonus and the last one.
- 25% transfer bonus through June 15, 2018
- 25% transfer bonus through April 29, 2019
- 25% transfer bonus through November 30, 2019
- 30% transfer bonus through August 15, 2021 — offered by Flying Blue directly
- 25% transfer bonus through September 30, 2021
- 25% transfer bonus through November 30, 2021
- 25% transfer bonus through June 15, 2022
- 25% transfer bonus through September 30, 2022
- 25% transfer bonus through December 7, 2022
- 25% transfer bonus through May 22, 2023
- 25% transfer bonus through September 22, 2023
- 20% transfer bonus through November 10, 2024
- This offer: 20% transfer bonus through October 31, 2025
Related: All Current Transfer Bonuses
Bottom Line
Transfer bonuses from Amex Membership Rewards to Flying Blue aren’t as common as they used to be. If you want to take advantage of the current 20% bonus, make sure to transfer points by October 31, 2025. There’s no telling when the next one will show up, but history suggests we likely won’t see another until around this time next year.
This bonus can unlock some fantastic sweet spots at excellent rates, so it’s worth acting quickly if you’re ready to put your rewards to work. And if you’re just a few miles short, remember that Flying Blue also partners with other transferable currencies and occasionally sells miles at a reasonable price.
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