What a transfer partner is
A transfer partner is a loyalty program that accepts deposits from a bank rewards currency. Your Chase Ultimate Rewards points can convert into United MileagePlus miles. Your Amex Membership Rewards can become Delta SkyMiles or Air France/KLM Flying Blue miles. The bank currency is the hub; the airline and hotel programs are the spokes.
This one feature is the dividing line in the entire points world. Points that can move to partners are transferable points, and they carry real upside because a well-booked partner award can return several times the cash-out value of the same balance. Points that cannot move are worth whatever fixed rate the issuer assigns, forever.
So the partner roster is not a feature of the currency. It basically is the currency.
How the big four currencies map to partners
Each major US bank currency has its own roster, and the rosters overlap less than you would think. A few representative names (not the full lists, which run a dozen or more partners each):
| Bank currency | Notable airline partners | Hotel partners |
|---|---|---|
| Chase Ultimate Rewards | United, Southwest, Aeroplan, British Airways, Flying Blue, Singapore | World of Hyatt, Marriott Bonvoy, IHG |
| Amex Membership Rewards | Delta, Flying Blue, Aeroplan, British Airways, ANA, Avianca LifeMiles | Marriott Bonvoy, Hilton Honors, Choice |
| Citi ThankYou | Flying Blue, Avianca LifeMiles, Virgin Atlantic, and a largely international roster | Wyndham, Choice |
| Capital One miles | Aeroplan, Flying Blue, British Airways, Avianca LifeMiles | Wyndham, Choice |
The exclusives are where strategy starts. United and Southwest are reachable only through Chase among the big four. So is World of Hyatt, which is most of the reason Chase Ultimate Rewards commands premium rates everywhere, including from us. Delta, meanwhile, is an Amex exclusive. If your home airport is a Delta hub and you hold only Chase points, you own a currency that cannot reach the airline you actually fly. That mismatch is more common than anyone admits.
One caveat before you build plans on this table: rosters move. Banks add partners, drop partners, and occasionally adjust a ratio, usually with modest fanfare. Treat the lists as representative rather than contractual, and check your issuer's current partner page before committing a large balance to any single name.
Ratios: mostly 1:1, with exceptions worth reading
The headline ratio across the industry is 1:1. One bank point becomes one airline mile or one hotel point. Chase transfers to all of its partners this way. Amex is mostly 1:1 too, but not entirely: JetBlue converts at 5:4 (1,000 points arrive as 800), and Hilton converts at 1:2, a ratio that looks generous and mostly just tells you what a single Hilton point is worth.
But the printed ratio is the least interesting number in the transaction. A 1:1 transfer into a weak program is a bad trade at any ratio, and a worse-than-1:1 transfer can still make sense if the destination points buy something exceptional. Read the ratio, then ignore it, and price the actual award. The issuer's program terms govern the details (Amex publishes its full Membership Rewards terms, if you enjoy that sort of reading).
Hotel ratios deserve their own caution. Hotel points generally carry lower per-point value than airline miles, so a 1:1 transfer from a bank currency into a hotel program is frequently a downgrade wearing a fair-trade costume. The well-known exception is Hyatt via Chase, where published chart pricing keeps the per-point value honest. Everywhere else, price the room in cash before you move anything.
How long do transfers take?
Anywhere from instant to several days, and the spread matters more than it sounds. Many of the most-used partners (United from Chase, say, or Delta from Amex) typically post within minutes. Others batch their processing and take a day or more. A few partners are famous in the hobby for multi-day waits.
Why care? Because award inventory does not wait. The seat you found at noon can be gone by the time a slow transfer posts on Thursday. Some programs let you place a hold on an award before the miles arrive; many do not. So the speed of your specific partner is not trivia. It determines how much risk you carry between clicking transfer and clicking book.
The practical workflow follows from this. For instant partners: find the award, transfer, book, one sitting. For slow partners, decide in advance how much risk you can stomach. Transfer early and hope the space holds, keep a refundable cash booking as a backstop, or simply favor awards in programs that post quickly. Boring solutions. They work.
The one-way door
Here is the rule that outranks every other rule in this article: transfers are irreversible. Once bank points become airline miles, they are airline miles for the rest of their natural lives. No issuer offers a conversion back. Not for a fee, not by phone, not if you ask nicely.
The failure mode is always the same story. Someone transfers a large balance toward a specific award, the seat disappears before booking (or was misread in the first place), and a flexible bank currency is now stranded in a single airline's program, subject to that program's expiration clock, its devaluation schedule, and its award availability. The points did not vanish. Their options did.
And it scales badly. Stranding a small balance is annoying. Stranding a six-figure transfer quietly reshapes your travel for years, because recovering the value now requires routing every future trip through one airline's award inventory.
Find the seat first. Confirm it is bookable. Then transfer. In that order, every time.
Why partner choice decides your value
Take one balance and imagine three exits. Cashed out at the issuer's fixed rate, it returns the floor. Transferred to a partner you never fly, it returns less than the floor (stranded value rounds toward zero). Transferred to the right partner for a premium award you actually take, it can return a multiple of the floor.
Same points. Wildly different outcomes. The variable was never the size of the balance, it was the destination program and the booking behind it. This is also where sweet spots live: nearly all of them are reached through a transfer to the one partner that prices a particular award generously.
Play it out with a real decision. You hold a large Chase balance and have a Europe trip in mind. Moved to United, the trip prices one way. Moved to Flying Blue or Aeroplan, the same itinerary can price quite differently, better or worse depending on dates, cabin, and surcharges. Three partners, one balance, three answers, and the spread between best and worst routinely dwarfs anything a ratio or a transfer bonus would have told you.
The overlap strategy
Some partners take deposits from several banks at once. Flying Blue accepts transfers from Amex, Chase, and Citi at 1:1 (Capital One reaches it too). Aeroplan takes Chase, Amex, and Capital One. British Airways collects from nearly everyone.
Overlap is quietly powerful. It lets you pool: a Chase balance here and an Amex balance there, individually too small for a business-class award, can land in the same Flying Blue account and book it together. And it sets up bonus shopping, since issuers periodically pay you 20-40% extra to transfer to a shared partner (covered in Transfer Bonuses Explained). When three banks can all reach the same airline, you move whichever currency is running the promotion.
The exclusives cut the other way. Nobody runs a bonus war over a partner only one bank can reach, and a Hyatt loyalist without a Chase card is simply out of the game.
When transferring is the wrong move
A transfer is a commitment dressed up as a feature. It trades your most flexible asset for your least flexible one, and the trade only pays when a specific, available, worthwhile award is sitting on the other side. No trip on the calendar? Then a transfer converts options into hope.
That leaves three honest exits for a balance with no award attached: hold it (and let devaluation drift do its work), cash out at the issuer's floor rate, or sell the points to a broker at a rate set by real market demand for that currency, paid in actual dollars via PayPal.
The best partner for points with no plan is often no partner at all.