Current Airline Transfer Bonuses: What Is Actually Active

• 1

  Public US airline transfer bonus verified on a primary loyalty-program page as of August 9, 2026

• +20%

  Additional Flying Blue miles for eligible Citi ThankYou members during the offer window

• Aug 22

  Offer deadline: 11:59 p.m. ET on August 22, 2026, according to Flying Blue

• 15 days

  Maximum posting time Flying Blue warns may apply, although it says miles are generally credited instantly

This page is the bonus side of the credit card transfer partner chart : the partner lists and base ratios live there, and the temporary percentage overlays — the bonuses that change what a currency is worth for a few weeks — live here. On August 9, 2026, one public US airline offer qualified: Citi ThankYou to Flying Blue at 20% through August 22. Other issuers are not filled in from rumors, expired campaigns or non-US pages. A signed-in or targeted offer may differ, so the list is a dated discovery aid rather than a replacement for your issuer portal.

What counts as an active transfer bonus

A transfer bonus is a temporary extra percentage on top of a card’s standing transfer ratio, offered by an issuer for a limited window on one or more partners. It is not a base ratio, and it is not a card welcome offer. A bonus counts as active only when an issuer adds points above the base ratio during a specific period, with an advertised end date. Because a bonus changes the effective value of a currency — a 30% bonus turns a 1:1 into a 1:1.3 — getting the date wrong can change the decision from good to bad in a single transfer.

The bar for listing a bonus here

To appear on this page, a bonus has to pass three checks, all against a primary issuer or program page, not a points blog:

1. The percentage is stated on the issuer’s own transfer page or offer page.
2. A start date at or before the as-of date exists — a bonus announced for the future is not active yet.
3. An end date later than the as-of date exists — a bonus that has already ended does not belong on a current list.

A percentage quoted by a credit-card news site, an alert service or a forum does not qualify on its own, because those are intermediaries that lag the issuer. If a primary page cannot be read on the date, the bonus is left off rather than guessed.

Verified: Citi to Flying Blue at 20%

The offer began at 12:01 a.m. ET on July 19 and closes at 11:59 p.m. ET on August 22, 2026. The base exchange is 1,000 Citi ThankYou points to 1,000 Flying Blue miles; the 20% addition produces 1,200 miles. Flying Blue says the member needs an eligible Citi card and matching first and last names across both accounts. It says credits are generally instant but may take up to 15 days.

The arithmetic is simple, but it should be applied to a real award. A 10,000-point transfer produces 12,000 Flying Blue miles during this offer; 50,000 produces 60,000. To work backward from an award, divide the required miles by 1.2, then round up to the transfer increment shown in Citi’s tool. A 30,000-mile award needs 25,000 Citi points before taxes and fees. That calculation is useful only after Flying Blue shows the seat as bookable.

A bonus does not make every award cheaper. Compare the same flight’s cash price with the miles, taxes and carrier charges Flying Blue asks for. If the award price rises from 30,000 to 45,000 miles, the 20% extra does not rescue the deal. The related points-versus-cash guide gives the net-value formula. The bonus changes the points input; it does not change the cash fare or remove award surcharges.

Amex: no additional public offer verified

No additional US Amex airline bonus was confirmed on a public, dated primary page during this audit. That is narrower than saying no offer exists: targeted or logged-in offers may not be visible publicly. Amex’s transfer page and current program-update document still verify base ratios — such as 1,000:1,000 to Aeroplan, Flying Blue, ANA and LifeMiles, and 5:4 to Cathay — but those are context, not bonuses. Check the US Amex portal for a current banner and do not import a promotion from another country’s Membership Rewards program.

Geography matters here. Search results can surface active Membership Rewards promotions for cards issued in Italy, Mexico, Canada or Australia. Those terms do not apply to a US Membership Rewards account. A valid source must match the country, issuer currency, receiving program and cardholder eligibility. That filtering step prevents a real promotion from becoming a false US claim.

Chase: no additional public offer verified

No additional Chase airline bonus was confirmed on a public, dated primary page during this audit. Chase’s transfer how-to page confirms mechanics — 1:1 to listed airline partners, transfers final, usually next business day and up to 7 business days — but that public page did not present a dated offer ending after August 9. Chase’s 1:1 airline ratio is a base ratio, verified and reported here, not a temporary overlay. A logged-in offer may differ; the definitive current answer lives in Chase’s own transfer interface on the day you act.

Capital One: no additional public offer verified

No additional Capital One airline bonus was confirmed on a public, dated primary page during this audit. Capital One’s official guide publishes the base ratios — most airlines at 1:1, with Emirates, EVA and JAL at 2:1.5, JetBlue at 5:3, and hotel rates like Accor at 2:1 — but it did not present a dated public offer ending after August 9. The ratios are verified and reported in the partner chart; a bonus is a separate, short-window overlay that must be confirmed on Capital One’s own page. None was confirmed, so no additional Capital One offer is declared active here.

Citi ThankYou: offer dates, ratio and rules

Citi ThankYou is the verified active entry. Flying Blue’s official partner page says eligible Citi cardholders receive 20% additional miles on transfers made from 12:01 a.m. ET July 19 through 11:59 p.m. ET August 22, 2026. The page states a base exchange of 1,000 points to 1,000 miles, matching names across accounts, generally instant posting that may take up to 15 days, and final transfers. Confirm the same terms in your ThankYou account before committing points.

Bilt: no additional public offer verified

No additional Bilt airline bonus was confirmed on a public, dated primary page during this audit. Bilt’s current support page lists 19 airline and 6 hotel partners, with airlines at 1:1 and Accor at 3:2, but those are base ratios. A prior Rent Day promotion or generic pattern of past offers is not evidence of a current bonus. Account-specific terms can differ, so confirm any Bilt offer inside its own app before transferring.

Base ratios, verified separately from bonuses

It is worth keeping the two numbers separate, because they move on different clocks. A base ratio is the standing exchange from your currency into a program; a transfer bonus is a temporary overlay that changes the effective result and then disappears. Citi to Flying Blue illustrates it cleanly: 1,000-to-1,000 is the base, while 1,000-to-1,200 is the result through August 22. The related chart records the standing ratios. This page records only temporary offers that a dated primary source supports.

How to check a bonus yourself

You can run this same check in a few minutes, and you should, because only your own logged-in view shows what an issuer is offering you today.

1. Open the issuer’s own transfer page, not a points website. Amex, Chase, Capital One, Citi and Bilt surface current bonuses there as a banner or offer block.
2. Read the percentage and the deadline directly from the offer, and confirm the date range covers today.
3. Confirm a bookable award with the loyalty program that will issue the ticket — the bonus is worthless if that program cannot book the operating flight.
4. Only then transfer the points the award needs.

Save a screenshot or PDF of the terms before submitting a large transfer, especially when the bonus may be credited by the receiving program rather than displayed in the issuer’s confirmation. Check the time zone as well as the date: this Citi offer ends at 11:59 p.m. Eastern Time, which can be earlier than midnight where you live. If the portal does not display the same offer or resulting amount, stop and ask the issuer rather than relying on this dated page.

For the partner lists and base ratios that sit behind any bonus, the credit card transfer partner chart covers every currency at the ratios its issuer publishes.

The irreversible-transfer warning

Bonuses are the dress rehearsal for the mistake they enable. A bonus creates urgency, and urgency pushes you to transfer quickly — but the transfer itself is final. Amex and Chase each state that transfers to partners cannot be reversed, and Flying Blue gives the same warning for the current Citi offer. Transfer in a hurry on an unverified bonus and a shown-award that is already gone, and you hold a non-refundable balance in a program you did not need. The sequence that protects you is always: confirm the bonus, confirm the bookable award, then transfer. Award-flight alerts cover how to verify a seat is real before any points move, and points-vs-cash-flights decides whether the resulting redemption is actually worth it.

Posting time is part of that risk. Flying Blue says the Citi miles are generally credited instantly but may take up to 15 days. An award seat can disappear within that outer window, and this page does not imply that Flying Blue will hold it. If the itinerary is scarce and cannot be held, decide whether you would still use the transferred miles for a different Flying Blue redemption before moving them.

Update cadence and methodology

The date at the top is the last completed audit, not a live-data guarantee. The editorial target is a Monday review plus ad hoc checks when a primary announcement appears. Every bonus shown carries its as-of date, end date, base ratio and primary source. The methodology is deliberately strict: primary pages only, start date at or before the as-of date, end date after it, and no counting a generic “we sometimes run bonuses” as an active offer. On August 9, 2026, the Citi-to-Flying-Blue offer cleared that bar. Re-open its primary page and your Citi portal immediately before acting.