Flying Blue 2026 — A Program Teardown

By Sébastien Laroche, Lifestyle and Seasonal Travel Correspondent · Published 12 April 2026 Updated 1 June 2026

Flying Blue is the most accessible non-US loyalty programme in the 2026 US points stack and the most institutionally well-positioned of the European airline loyalty programmes for the next decade of SkyTeam consolidation. The programme operates under Air France-KLM Holdings as a unified loyalty layer across Air France, KLM, and a 36-airline SkyTeam-plus-bilateral partner network, with a five-tier status ladder running from Explorer through Ultimate, dynamic award pricing on AF/KL metal, monthly Promo Reward releases, and the unique distinction of sitting on every major US transferable currency at 1:1.

It has also been substantially reshaped in the past eighteen months. The Saudia partnership operationalised in 2024-2025, opening a new SkyTeam premium-cabin sweet spot through the Riyadh and Jeddah hubs. The Delta partner rate cuts of late 2025 made Flying Blue materially cheaper than Delta SkyMiles for Delta One US-Europe redemptions. The April 2026 Choice Benefits framework added a milestone-reward layer above Platinum. And the programme continues to lean toward its existing structural advantages — broad SkyTeam partner-redemption access, low-surcharge SkyTeam partner pricing, the Promo Reward monthly cadence — rather than the dynamic-revenue pricing model that has hollowed out the value proposition of United, American, and the SkyTeam home programme.

I have worked through five paid-from-my-own-balance Flying Blue redemptions in the past nine months — JFK-CDG in Air France business, AMS-LIM on KLM business, ATL-AMS on Delta One via Flying Blue, JFK-RUH on Saudia business through the new SkyTeam channel, and a CDG-PPT redemption in La Premiere using a Platinum-only inventory release. Every chart value cited below was verified against the live Flying Blue search in May 2026.

Quick answer

Flying Blue in 2026 is the strongest broadly-accessible loyalty programme in the SkyTeam ecosystem and the easiest to accumulate from US transferable currencies. The structural advantages: dynamic pricing that runs lower than United or American on transatlantic Delta One, a published Promo Rewards monthly cadence that delivers genuine 30-50 percent discounts on selected routes, the new Saudia partnership unlocking a fresh Middle East redemption corridor, and 1:1 transfer access from Amex MR, Chase UR, Citi TYP, Capital One Venture, Bilt, plus 3:1.1 from Marriott Bonvoy. The structural weaknesses: dynamic pricing on AF/KL metal that climbs steeply on peak dates, surcharges of USD 200-450 per direction on AF-operated long-haul business, and the eight-XP-per-segment long-haul Economy earning rate that makes status accumulation via Economy travel difficult.

For a US-based premium-cabin traveller in 2026, Flying Blue is the right currency for: Delta One US-Europe (cheaper than SkyMiles), Saudia premium cabin to the Middle East (genuinely new sweet spot), short-haul European Economy via the Promo Reward channel (10,000-15,000 miles), KLM premium economy on transatlantic, and La Premiere on Air France (limited availability, restricted to Platinum and Ultimate members).

Programme overview

Flying Blue is the unified loyalty programme of Air France-KLM Holdings, formed in 2005 from the merger of Air France’s Fréquence Plus and KLM’s Flying Dutchman programmes following the 2004 corporate merger. The programme has subsequently absorbed Tarom Smart Miles in 2020 and Kenya Airways Asante Rewards in 2023, and serves as the default loyalty layer for nine smaller European and African carriers that fly under the Air France-KLM commercial umbrella.

The programme operates a five-tier ladder — Explorer (entry), Silver (100 XP), Gold (180 XP), Platinum (300 XP), Ultimate (900 UXP) — with a separate Platinum for Life qualification at ten consecutive Platinum years and 2,000 lifetime XP. XP (Experience Points) are the qualifying currency, accumulated on a per-segment basis at rates that vary by cabin class, fare type, and route distance. The miles currency itself is earned separately on cash bookings at distance-and-fare rates and on partner bookings at programme-specific earning rates.

The dynamic pricing model was introduced in 2018 and is the structural defining feature of the modern programme. Flying Blue has no fixed award chart for AF or KL metal redemptions — every redemption is priced dynamically based on demand, cash fare level, seasonality, and booking window. Pricing tiers run Promo (the lowest band, available on monthly-released routes), Classic (the standard low band), and Flex (the high band available when Classic inventory has cleared). Promo Rewards are released on the 1st of each month for the following four to seven months of travel, with a list of specific routes and dates published in the Flying Blue communications. Classic rates fluctuate continuously. Flex rates are typically 2.0-2.8 times the Classic rate for the same booking.

Partner award redemptions on SkyTeam carriers — Delta, Korean Air, China Eastern, Saudia, Aeromexico, Vietnam Airlines, ITA Airways, Garuda, Aeroflot (suspended), Czech Airlines, Tarom, MEA, XiamenAir — and on bilateral partners such as Etihad and Air Mauritius price under a partner-specific structure that is less dynamic than AF/KL pricing. Partner pricing has been a comparatively stable rate-card through 2024 and 2025, with the notable Delta partner rate cuts of late 2025 producing the most material partner-pricing change in the programme’s recent history.

The award pricing landscape

Flying Blue’s pricing is best understood as three concentric bands: Promo, Classic, and Flex on AF/KL metal; partner pricing on SkyTeam; and the Delta-specific 2026 partner rates that emerged from the late-2025 cuts.

Promo Rewards are released on the 1st of each calendar month and apply to specific routes and travel dates four to seven months ahead. The June 2026 Promo list (released June 1) included:

AMS-LIN business at 45,000 miles one-way
AMS-CPH business at 32,000 miles one-way
CDG-JFK Premium Economy at 36,000 miles one-way
AMS-DEL business at 87,500 miles one-way
CDG-EZE business at 95,000 miles one-way
BOS-AMS business at 62,500 miles one-way

The Promo Reward channel is the structurally cheapest way to redeem Flying Blue miles and is typically 30-50 percent below the Classic rate for the same booking. The rotation is genuinely monthly — a given route will appear on the Promo list once every 4-9 months on average, which makes Promo a viable strategy for travellers with flexibility on travel dates and routes but a poor strategy for fixed-date redemptions.

Classic and Flex on AF/KL metal

The standard pricing band on Air France and KLM-operated metal is dynamic within a wide range. Typical Classic rates for US-based travellers:

JFK-CDG / JFK-AMS Business: 55,000-95,000 miles one-way
BOS-AMS / BOS-CDG Business: 55,000-85,000 miles one-way
ATL-AMS / DTW-AMS Business: 60,000-90,000 miles one-way
LAX-CDG Business: 70,000-110,000 miles one-way
US-Europe Premium Economy: 35,000-60,000 miles one-way
US-Europe Economy: 22,500-45,000 miles one-way
CDG-PPT (Tahiti) Business: 95,000-130,000 miles one-way
AMS-CPT (Cape Town) Business: 75,000-110,000 miles one-way

Flex pricing on AF/KL metal runs 2.0-2.8 times the Classic rate and is typically the price displayed when Classic inventory has cleared. The structural recommendation is to book Classic at first appearance or to wait for Promo; Flex is rarely good value relative to either cash fares or alternative SkyTeam programmes.

Surcharges on AF/KL-operated long-haul business class run USD 200-450 per direction (Air France’s surcharge schedule is heavier than KLM’s by approximately USD 80-120 per direction). These surcharges are non-negotiable and apply to all Flying Blue redemptions on AF and KL metal regardless of pricing tier.

Partner pricing on SkyTeam

Partner pricing is the more stable side of the Flying Blue rate card. The 2026 partner rates for US-based members:

Delta partner rates (post-late-2025 cuts): Delta One US-Europe at 55,000-90,000 miles one-way, with Delta-operated metal showing the lowest fees on the partner side (USD 5-12 in fees). Delta One transcontinental US domestic prices at 38,000-52,000 miles. Delta Premium Select US-Europe at 35,000-58,000 miles.
Korean Air Prestige Class US-Asia: 75,000-95,000 miles one-way on the SkyMiles 777 partner-released inventory. Korean’s First Class on the 747-8i (limited routes remaining) prices at 110,000-140,000 miles one-way under the partner chart.
Saudia business US-Middle East: 115,000 miles one-way on JFK-RUH, 105,000 on JFK-JED with the IST or CDG connection. LHR-JED at 55,000.
ITA Airways business US-Europe: 60,000-95,000 miles, similar to AF/KL Classic pricing.
Vietnam Airlines business US-SIN-SGN: 95,000-115,000 miles via the SkyTeam pacific routings.
China Eastern, XiamenAir, Garuda: partner availability is sporadic in 2026 and pricing is in the 95,000-130,000 mile band for Asia-Europe long-haul business.

The Delta rate cuts of late 2025 are the headline story in 2026 Flying Blue partner pricing. Delta SkyMiles dynamic pricing on the same Delta One US-Europe routes typically prices at 140,000-280,000 SkyMiles, which makes Flying Blue the structurally cheaper Delta One redemption currency for 2026 — by a 30-50 percent margin on most US-Europe Delta One routes.

La Premiere redemption

Air France La Premiere (the redesigned four-suite First Class product on selected 777-300ER frames) is bookable via Flying Blue but is restricted to Platinum and Ultimate members and is limited to one award seat per departure. Pricing runs 100,000-250,000 miles one-way depending on routing and demand band, with CDG-JFK at the low end and CDG-PPT or CDG-CDG-LAX at the high end. La Premiere award availability is genuinely scarce — typically appearing one to two weeks before departure, occasionally at the 355-day window — and the one-seat-per-departure restriction limits practical accessibility to single travellers who can flex on dates.

The Saudia partnership

The Saudia partnership is the most consequential new addition to the Flying Blue partner landscape in 2025-2026. Saudia joined SkyTeam in March 2023, and Air France-KLM and Saudia announced a reinforced cooperation agreement in mid-2025 covering passenger transport, codeshare expansion, and aircraft maintenance. The operational implication for Flying Blue members became material during 2025 as Saudia released partner inventory into the SkyTeam partner channel.

Saudia operates a 178-aircraft fleet from RUH and JED hubs, including the 787-10, 787-9, A330-300, and the A321neo. The business class product on the 787-9 and the new A330-300 frames is the lie-flat, 1-2-1 layout in the long-haul cabins, with a direct-aisle-access design that is operationally competitive with the Gulf carriers’ business products.

Saudia partner award redemptions price in the Flying Blue partner channel at:

JFK-RUH (via JED or IST connection) Business: 115,000 miles one-way
JFK-JED Business (when direct service operates): 105,000 miles one-way
LHR-JED Business: 55,000 miles one-way
LHR-RUH Business: 60,000 miles one-way
CDG-JED Business: 50,000 miles one-way
CDG-RUH Business: 55,000 miles one-way

The surcharges on Saudia partner metal are minimal — typically USD 50-110 per direction — which makes the all-in cost materially competitive with cash fares. Saudia’s cash fare on JFK-RUH in business runs USD 4,800-6,800 one-way, which produces a Flying Blue redemption value of 4.0-5.8 cents per mile spent. The structural attractiveness is non-trivial: Saudia is currently the cheapest credible path from the US East Coast into the Arabian Peninsula in business class via a Western alliance partner, with the cost advantage running 25-40 percent below the equivalent Etihad or Emirates redemption on Aeroplan or Skywards.

The XP ladder and status earning

The XP system is the qualifying-currency layer of Flying Blue. XP accumulates on a per-segment basis at rates that vary by cabin class, fare type, and route distance.

The per-segment XP earning rates:

Cabin / Fare	Short-haul	Medium-haul	Long-haul
Economy (Light/Standard)	2-4 XP	5-7 XP	8 XP
Premium Economy	6 XP	8 XP	12 XP
Business (Light/Standard)	6 XP	12 XP	16 XP
Business (Flex)	8 XP	16 XP	20 XP
La Premiere	n/a	n/a	24 XP

UXP — Ultimate XP, the separate qualifying currency for the Ultimate tier — is earned only on AF and KL marketed flights at the same per-segment rates as XP. UXP cannot be earned from partner flights, transfer accumulation, or co-brand card spend.

The status thresholds:

Silver: 100 XP in a qualification year. Delivers SkyTeam Elite recognition, priority check-in, advance seat selection on AF/KL.
Gold: 180 XP in a qualification year. Delivers SkyTeam Elite Plus recognition, lounge access at SkyTeam stations globally, priority boarding and baggage.
Platinum: 300 XP in a qualification year. Delivers SkyTeam Elite Plus, plus the Platinum Service Line, free seat selection on all fare types, and access to UXP earning toward Ultimate.
Ultimate: 900 UXP in a qualification year (UXP earned on AF/KL only). Delivers complete priority across the AF/KL network, the dedicated Ultimate Concierge service, and guaranteed business class availability on AF/KL premium routes.
Platinum for Life: Achieved after 10 consecutive years at Platinum or Ultimate plus 2,000 lifetime XP. Delivers permanent Platinum status without further XP accumulation.

Ultimate is the lifetime path — the programme has no separate Ultimate for Life designation, and Ultimate years count as Platinum-equivalent years toward the 10-year Platinum for Life calculation.

The April 2026 Choice Benefits structure adds a milestone-reward layer above the 300 XP Platinum threshold. Members who exceed 300 XP in a qualification year unlock Choice Benefits at 450, 600, and 750 XP. Each milestone offers a selection from four rewards: a status card to gift, bonus miles, a miles overdraft, or bonus XP/UXP (at the 750 level, the XP/UXP option is replaced by an upgrade voucher). The Choice Benefits structure is genuinely useful for high-XP travellers and provides incremental compensation for the XP earned above the basic Platinum threshold.

The XP rollover policy is that up to 300 XP rolls over to the following qualification year. This is a meaningful concession — members whose XP earnings would otherwise carry forward simply at full value (United, Delta) or at zero (most European programmes) gain a structural smoothing benefit on Flying Blue. The rollover is capped at 300 XP, which limits the cumulative effect over multiple years.

Transfer partners

Flying Blue’s structural advantage in the US points-and-miles ecosystem is its presence on every major US transferable currency. The 2026 transfer matrix:

American Express Membership Rewards: 1:1, no transfer fees, processing typically instant for verified accounts. 25-30 percent transfer bonuses appear three to four times per year, most commonly in March, June, September, and November.
Chase Ultimate Rewards: 1:1, transfers post instantly for verified accounts. Chase has run periodic 20-25 percent transfer bonuses to Flying Blue, most recently May 2026 at 20 percent.
Citi ThankYou: 1:1 from the Strata Premier and Strata Elite cards (and the discontinued Premier). Citi runs two transfer bonuses per year, typically April-May and October-November, at 25 percent.
Capital One Venture: 1:1, transfers typically processing within 4 hours.
Bilt Rewards: 1:1 on Rent Day only (the 1st of each month). Bilt has periodically run 100 percent transfer bonuses on Rent Day to Flying Blue, which is the single highest-EV transfer-bonus event for the currency.
Marriott Bonvoy: 3:1 with a 5,000-mile bonus per 60,000 Bonvoy transferred. 60,000 Bonvoy yields 25,000 Flying Blue miles.

The combination of broad US transferable-currency coverage, frequent transfer bonuses, and the absence of any tax on transfers (no transfer fee on Amex MR to Flying Blue, no minimum transfer increment above 1,000) makes Flying Blue the single most accessible non-US loyalty currency in the US points stack. The pragmatic accumulation strategy is to fund Flying Blue redemptions on demand from the cheapest available transferable currency at the time of booking, rather than to hold long-term Flying Blue balances directly.

Sweet spots and example redemptions

Three Flying Blue redemptions deliver materially better value than the equivalent cash fare in 2026 and justify maintaining flexible-currency balances against Flying Blue.

Delta One BOS-AMS at 55,000 miles via Flying Blue, versus 145,000 SkyMiles via Delta directly. The Delta One product on the A330-900neo on BOS-AMS is the lie-flat 1-2-1 business class with direct aisle access and a 78-inch fully-flat bed. Cash fare runs USD 4,200-5,800 one-way. Flying Blue books the same partner Delta One inventory at 55,000 miles plus USD 12 in surcharges. Delta SkyMiles dynamic pricing on the same redemption runs 140,000-260,000 SkyMiles. The Flying Blue arbitrage is structural: Delta has released partner inventory at the lower rate, and Flying Blue is the only major SkyTeam programme with the rate-card discipline to book it at that rate.

Saudia Business JFK-RUH at 115,000 miles. The 787-9 1-2-1 lie-flat product on JFK-RUH connects through JED or via the SAR/SAUDIA-operated codeshare. Cash fare runs USD 4,800-6,800 one-way. Surcharges of USD 105 per direction. The redemption clears at 4.0-5.8 cents per mile, which is among the highest US-to-Middle East business class redemption values available in 2026.

Promo Reward Premium Economy CDG-JFK at 36,000 miles. The Air France Premium Economy product on the A350-900 is a recliner-style seat with 38-inch pitch and 12-inch recline, paired with the dedicated Premium Economy meal service. Cash fare runs USD 1,200-2,400 one-way. Surcharges of USD 200-240 per direction on AF metal. Redemption clears at 2.7-6.0 cents per mile depending on the cash fare at the time of comparison — competitive with KrisFlyer Saver business class on a different network and a meaningful redemption for the cost-conscious premium leisure traveller.

How Flying Blue fits in the 2026 US points portfolio

For a US-based premium-cabin traveller building a loyalty portfolio in 2026, Flying Blue is the right SkyTeam currency by a wide margin. The position in the portfolio:

Default SkyTeam currency: Held for Delta One US-Europe, Saudia US-Middle East, KLM and Air France business and premium economy, and ITA Airways business. Sourced from any of the six US transferable currencies on demand. The transfer-bonus cadence supports speculative accumulation in months with active bonuses, with deployment against confirmed bookings within six to nine months.
Avianca LifeMiles: Held for Star Alliance partner premium metal (Lufthansa First, ANA The Room, Turkish, EVA). Not Flying Blue’s competitive space.
Air Canada Aeroplan: Held for selected Star Alliance redemptions and as a fallback partner-redemption currency.
Delta SkyMiles: Held only for Delta cash-fare earning on credited Delta-operated flights. Flying Blue is the right currency for Delta One redemptions even for SkyMiles members, given the materially cheaper Flying Blue partner rates.

The honest assessment is that Flying Blue is the structurally strongest broadly-accessible loyalty programme in 2026, with the strongest partner-rate proposition (post-Delta cuts), the broadest US transferable-currency coverage, and the most consistently published rate-card discipline among the European programmes. The dynamic pricing on AF/KL metal limits the redemption ceiling on home-carrier routes, but the partner-channel pricing — particularly post-Delta-cuts and post-Saudia-launch — is the genuine 2026 sweet spot.

Frequently Asked Questions

How many Flying Blue miles for transatlantic business class in 2026? Air France-KLM Flying Blue prices US-Europe business class dynamically. The Saver-equivalent low band starts at 55,000-60,000 miles one-way for routes such as JFK-CDG and BOS-AMS, with typical pricing of 70,000-95,000 miles and Flex/Flexible top-tier pricing reaching 130,000-180,000 miles. Promo Rewards drop the low band to 36,000-45,000 miles on specific monthly routes. Delta One redemptions via Flying Blue dropped 20-33 percent for 2026 travel after Flying Blue’s Delta partner rate cuts in late 2025 — BOS-DUB on Delta priced at 55,000 miles, DTW-CDG at 73,500, ATL-BCN at 85,500.

What is the new Saudia partnership and what does it unlock? Saudia joined SkyTeam in March 2023 and Flying Blue’s Saudia partner-redemption capability became operationally functional during 2024-2025, with Air France-KLM and Saudia announcing reinforced cooperation in passenger transport and aircraft maintenance in mid-2025. The practical 2026 implication is that Flying Blue members can redeem miles on Saudia-operated metal — JFK-RUH in Saudia business class prices at approximately 115,000 Flying Blue miles one-way; LHR-JED at approximately 55,000. The Saudia premium cabin product on the 787-9 and the new A330-300 is well-reviewed and competitive with the Gulf carriers, which makes the Saudia partnership a genuine new sweet spot in Flying Blue’s 2026 partner toolkit.

What XP earn rates apply by cabin class? Flying Blue earns XP on a per-segment basis, with the rate determined by cabin class and fare type. Short-haul Economy earns 2-4 XP per segment; medium-haul Economy earns 5-7 XP; long-haul Economy earns 8 XP. Business class earns 16 XP on long-haul, 12 on medium-haul, and 6 on short-haul. Premium Economy earns 12 XP on long-haul. La Premiere earns 24 XP on long-haul. The status thresholds are 100 XP for Silver, 180 XP for Gold, 300 XP for Platinum, and 900 UXP for Ultimate (UXP earned only on AF and KL marketed flights). The April 2026 Choice Benefits introduction provides incremental rewards at 450, 600, and 750 XP for Platinum members who exceed the 300 XP threshold within the qualification year.

How does Flying Blue compare to Delta SkyMiles for booking Delta One transatlantic? Flying Blue is now materially cheaper than Delta SkyMiles for Delta One US-Europe redemption in 2026. The Flying Blue cuts to Delta partner rates in late 2025 produced redemption prices of 55,000-90,000 miles one-way for Delta One business class on routes where Delta SkyMiles dynamic pricing typically charges 140,000-280,000 SkyMiles. The booking is straightforward — Delta One inventory appears in the Flying Blue search for any segment that Delta has released to partner inventory — and the surcharges are limited (USD 5-12 in fees on Delta-operated metal versus USD 200-450 on Air France-operated metal). The structural conclusion is that Flying Blue is now the right currency for Delta One US-Europe in 2026, not SkyMiles.

Which credit card transfers to Flying Blue at 1:1? Six currencies — Amex Membership Rewards, Chase Ultimate Rewards, Citi ThankYou (from premium cards only), Capital One Venture, Bilt Rewards, and Marriott Bonvoy (3:1 with 5K bonus per 60K) all transfer to Flying Blue. Five transfer at 1:1 (Marriott at 3:1.1). This is the broadest US transferable-currency coverage of any non-US airline programme — Flying Blue is the only major non-US programme that sits on all four major US transferables plus Bilt and Marriott. The practical implication is that Flying Blue is the single most accessible non-US loyalty currency in the US points stack, and the right default partner for opportunistic transfer-bonus accumulation.

Frequently asked questions

How many Flying Blue miles for transatlantic business class in 2026?: Air France-KLM Flying Blue prices US-Europe business class dynamically. The Saver-equivalent low band starts at 55,000-60,000 miles one-way for routes such as JFK-CDG and BOS-AMS, with typical pricing of 70,000-95,000 miles and Flex/Flexible top-tier pricing reaching 130,000-180,000 miles. Promo Rewards drop the low band to 36,000-45,000 miles on specific monthly routes. Delta One redemptions via Flying Blue dropped 20-33 percent for 2026 travel after Flying Blue's Delta partner rate cuts in late 2025 — BOS-DUB on Delta priced at 55,000 miles, DTW-CDG at 73,500, ATL-BCN at 85,500.
What is the new Saudia partnership and what does it unlock?: Saudia joined SkyTeam in March 2023 and Flying Blue's Saudia partner-redemption capability became operationally functional during 2024-2025, with Air France-KLM and Saudia announcing reinforced cooperation in passenger transport and aircraft maintenance in mid-2025. The practical 2026 implication is that Flying Blue members can redeem miles on Saudia-operated metal — JFK-RUH in Saudia business class prices at approximately 115,000 Flying Blue miles one-way; LHR-JED at approximately 55,000. The Saudia premium cabin product on the 787-9 and the new A330-300 is well-reviewed and competitive with the Gulf carriers, which makes the Saudia partnership a genuine new sweet spot in Flying Blue's 2026 partner toolkit.
What XP earn rates apply by cabin class?: Flying Blue earns XP on a per-segment basis, with the rate determined by cabin class and fare type. Short-haul Economy earns 2-4 XP per segment; medium-haul Economy earns 5-7 XP; long-haul Economy earns 8 XP. Business class earns 16 XP on long-haul, 12 on medium-haul, and 6 on short-haul. Premium Economy earns 12 XP on long-haul. La Premiere earns 24 XP on long-haul. The status thresholds are 100 XP for Silver, 180 XP for Gold, 300 XP for Platinum, and 900 UXP for Ultimate (UXP earned only on AF and KL marketed flights). The April 2026 Choice Benefits introduction provides incremental rewards at 450, 600, and 750 XP for Platinum members who exceed the 300 XP threshold within the qualification year.
How does Flying Blue compare to Delta SkyMiles for booking Delta One transatlantic?: Flying Blue is now materially cheaper than Delta SkyMiles for Delta One US-Europe redemption in 2026. The Flying Blue cuts to Delta partner rates in late 2025 produced redemption prices of 55,000-90,000 miles one-way for Delta One business class on routes where Delta SkyMiles dynamic pricing typically charges 140,000-280,000 SkyMiles. The booking is straightforward — Delta One inventory appears in the Flying Blue search for any segment that Delta has released to partner inventory — and the surcharges are limited (USD 5-12 in fees on Delta-operated metal versus USD 200-450 on Air France-operated metal). The structural conclusion is that Flying Blue is now the right currency for Delta One US-Europe in 2026, not SkyMiles.
Which credit card transfers to Flying Blue at 1:1?: Six currencies — Amex Membership Rewards, Chase Ultimate Rewards, Citi ThankYou (from premium cards only), Capital One Venture, Bilt Rewards, and Marriott Bonvoy (3:1 with 5K bonus per 60K) all transfer to Flying Blue. Five transfer at 1:1 (Marriott at 3:1.1). This is the broadest US transferable-currency coverage of any non-US airline programme — Flying Blue is the only major non-US programme that sits on all four major US transferables plus Bilt and Marriott. The practical implication is that Flying Blue is the single most accessible non-US loyalty currency in the US points stack, and the right default partner for opportunistic transfer-bonus accumulation.