Amex Points to Flying Blue With 25% Transfer Bonus: The Business Class Sweet Spots Worth Moving Points to Before June 30

Amex Membership Rewards points are currently transferring to Flying Blue at a 25% bonus through June 30, 2026. Stack that with this month’s Promo Rewards — which already slice 25% off select US-Europe awards — and you’re looking at business class round-trips that land in the 45,000–60,000 mile range after the math.

That’s not a typo. Transfer 36,000 MR and you land 45,000 Flying Blue miles. Apply those to a Promo-priced business class award and transatlantic lie-flat seats suddenly feel less like a lottery ticket.

The window is narrow. The bonus vanishes at the end of the month. Promo Rewards reset on the first of July. If you’ve been sitting on a pile of MR, this is the moment to move some.

Standard ratio is 1:1. With the 25% bonus you get 1.25 Flying Blue miles per MR point. Forty thousand MR becomes 50,000 miles. Fifty thousand becomes 62,500. These numbers line up nicely with discounted business class pricing.

Flying Blue’s baseline for US-Europe business class hovers around 60,000 miles one-way on good days. Promo Rewards this month drop many of those to 45,000. Round-trip math gets you across the Atlantic and back for what used to require six figures in some programs.

Yes, taxes still exist. Expect €200–350 per direction on KLM from Amsterdam and a bit more on Air France from Paris. It’s not zero, but it’s predictable and hasn’t spiraled like some carriers. Recent caps on carrier surcharges for premium cabins help.[[1]](https://skystatus.pro/guide/flying-blue-award-availability)[[2]](https://thriftytraveler.com/news/points/flying-blue-raises-fees-on-award-tickets/)

June 2026 Promo Rewards cover a wide list of US gateways to Europe at 18,750 miles each way in economy: New York, Boston, Atlanta, Chicago, Washington, Houston, Seattle, Minneapolis, and a few others. Premium economy hits 30,000 from Las Vegas and a couple more spots.

Business class Promo pricing this month leans toward Latin America, Africa, and the Caribbean at 63,750 miles one-way (think Bogota, Panama City, Abidjan). Transatlantic business class at the full 45,000–50,000 sweet spot appears less frequently on the published list but still surfaces in calendar searches on many of the same city pairs, especially shoulder months.

Availability is decent for June through September 2026 on both Air France and KLM metal, with multiple seats often loaded. KLM typically shows lower surcharges out of Amsterdam. Air France metal can run €100–150 higher round-trip but gets you the new business product on many routes. Pick your poison.[[3]](https://www.flyingblue.us/en/spend/flights/rewards)[[4]](https://www.msn.com/en-us/travel/news/air-france-klm-flying-blue-promo-rewards-for-june-2026-discounted-award-flights-to-europe/ar-AA1NFShv)

Flying Blue availability is dynamic and can evaporate. Promo Rewards are capacity-controlled and disappear when the monthly batch sells out. The Amex bonus is explicitly set to end June 30 — no extensions rumored.

Transferring speculatively is usually dumb. Here it’s less dumb. Identify the exact itinerary first, confirm award space, then pull the trigger on the transfer. Miles post instantly most of the time.

Don’t forget Flying Blue lets you book one-ways. Mix a Promo outbound with a regular saver return if the dates don’t align perfectly. Or book two one-ways to optimize surcharges and aircraft type.

The program isn’t perfect — dynamic pricing can still bite on peak dates — but the double discount creates one of the better business class values available to MR holders right now.

Log into your Amex account today. Search Flying Blue for your preferred US-Europe business class dates between now and November 30, 2026. Look specifically at routes through AMS or CDG on the listed Promo cities. When you find space at or near 45,000–50,000 miles one-way, transfer only what you need plus a small buffer.

Book immediately after the miles hit. Then go enjoy a proper meal and flat bed instead of pretending premium economy is “close enough.” The overlap won’t last.[[5]](https://frequentmiler.com/current-point-transfer-bonuses/)[[6]](https://www.flyingblue.us/en/earn/partners/financial-services-american-express-membership-rewards)

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