What a transfer bonus actually is
Credit card issuers like Amex, Chase, and Citi periodically offer bonuses when you move points to a partner airline or hotel program. A 30% bonus means every 1,000 points you transfer becomes 1,300 in the partner's currency. These promos typically run 2–6 weeks and rotate between partners — Amex to British Airways one month, Chase to United the next. The catch: transfers are one-way and irreversible. You need a specific award booking in mind before you pull the trigger.
The math that matters
Say you want a one-way business class seat on Iberia from New York to Madrid. Iberia charges 34,000 Avios. With a 30% Amex transfer bonus, you'd need just 26,154 Amex points — a savings of nearly 8,000 points. On a round-trip economy redemption to Tokyo via ANA (55,000 miles), a 25% bonus drops your cost to 44,000 points. Stack that with a card that earns 3x on travel and you're looking at a $1,200 flight for roughly $400 in opportunity cost.
Where to track bonuses
Check the issuer's transfer page weekly — Amex posts bonuses under 'Transfer Partners' in your account. FrequentMiler and Doctor of Credit maintain running lists. Set a Google Alert for 'Amex transfer bonus' and 'Chase transfer bonus.' Bonuses often launch without email notice. I caught a 40% Virgin Atlantic bonus last spring only because I checked on a Tuesday morning; it was gone in nine days.
The 48-hour rule before you transfer
Never transfer speculatively. Confirm award space first on the airline's site or via ExpertFlyer. Then call the airline to place a 48-hour hold if they allow it (American and Alaska often do). Transfer points, wait for them to post — usually instant for Amex, up to 48 hours for Citi — then ticket. If the space vanishes before your points land, you're stuck with miles you may not use. That's how people end up with 80,000 Avianca LifeMiles and no plan.
Best partners to watch in 2026
Amex bonuses to British Airways, Iberia, and Virgin Atlantic are the most frequent. Chase occasionally bonuses United and Southwest. Citi ThankYou has run 25–30% promos to Turkish Airlines and Qatar Airways — both excellent for business class to Europe and Asia. Capital One rarely bonuses but transfers to Turkish at 1:1, which is already strong. Set your sights on programs where the base transfer ratio is 1:1 and the bonus pushes it to 1.25:1 or better.
One booking, one bonus
Don't transfer more than you need for the specific award. Bonuses feel like free money, but unused miles in a foreign program are a liability — they devalue, expire, or get stranded when a program changes partners. Transfer exactly the points for your seat, plus a small buffer of 1,000–2,000 for taxes or a last-minute change. If you need 34,000 Avios and the bonus is 30%, transfer 26,200 Amex points, not 40,000. Discipline beats hoarding.