Yes, you can transfer Amex points to United, but only through specific Amex cards and with limits on how many points you can move
American Express points transfer to United Airlines as a one-way transaction — once points leave your Amex account, they cannot come back. The transfer happens when ready, and United will add them to your MileagePlus account within hours. However, not every Amex card offers this transfer option, and United is one of roughly 20 airline and hotel partners Amex allows, not a universal destination for all cardholders.
The transfer ratio is 1 Amex point = 1 United mile, with no bonus or penalty. If you transfer 10,000 points, you receive 10,000 United miles. Some Amex cards occasionally run promotions offering bonus miles on transfers — for example, "transfer 10,000 points and receive 12,000 miles" — but these are temporary and not may provide.
Key Takeaways
- Only certain Amex cards can transfer points to United; the most common are the Platinum Card, Business Platinum, and some premium rewards cards, so check your card's benefits guide first.
- Transfers happen when ready and are permanent, so confirm your United MileagePlus account number before you initiate the transfer.
- The transfer rate is always 1 Amex point to 1 United mile, with no multiplier unless Amex is running a limited-time promotion.
- You can transfer as few as 1,000 points at a time, but Amex may set a maximum annual transfer limit depending on your card type.
- United miles have their own expiration rules separate from Amex points, so check United's policy on mile validity before transferring a large balance.
Which Amex cards allow transfers to United
The American Express Platinum Card and Business Platinum Card are the primary consumer and business cards that transfer to United. Both cards include access to Amex's transfer partners as a standard benefit. The American Express Gold Card does not transfer to airlines; it is limited to hotel partners and Amex's own travel booking portal.
Some business cards — including the Business Gold Card and Corporate Platinum Card — also offer transfers, though the partner list may differ slightly. If you hold an Amex card and are unsure whether it transfers to United, log into your Amex account online, go to the rewards or benefits section, and look for "transfer partners" or "airline partners." The full list of available partners will appear there.
Amex occasionally adds or removes partners, so the list you see in your account is always current. If United does not appear, your card does not have transfer capability to that airline.
How to transfer Amex points to United
Log into your American Express account online or through the mobile app. Navigate to your rewards balance and select "Transfer Points" or "Redeem Points" — the exact wording varies by card. You will see a list of transfer partners; select United Airlines.
Enter the number of points you want to transfer. Amex will show you how many United miles you will receive (usually a 1:1 ratio). You will also need to provide your United MileagePlus account number — this is the 12-digit number on your United frequent flyer card or in your MileagePlus account. Double-check this number before confirming, because transfers cannot be reversed.
After you confirm, Amex will process the transfer when ready. United typically posts the miles to your MileagePlus account within a few hours, though it can take up to 24 hours. You will receive a confirmation email from both Amex and United showing the transaction.
Minimum and maximum transfer amounts
Amex allows transfers in increments of 1,000 points, so you can transfer 1,000, 2,000, 3,000, or any multiple of 1,000. There is no stated minimum balance you must keep in your Amex account, but you cannot transfer more points than you currently have.
Maximum transfer limits depend on your card. The Platinum Card typically allows transfers up to your current points balance with no annual cap, though Amex reserves the right to set limits on individual accounts. Business cards may have different rules. If you are transferring a very large balance — more than 500,000 points — contact Amex customer service first to confirm there are no restrictions on your account.
Why you might transfer points to United instead of redeeming them directly
Amex points can be redeemed for cash back, statement credits, or travel bookings through Amex's own portal. Transferring to United makes sense if you are a frequent United flyer and want to use miles for specific flights that offer better value than Amex's cash redemption rate.
For example, if Amex values a point at 1 cent when you redeem for cash back, but United miles can book a $500 flight for 50,000 miles (a value of 1 cent per mile), the value is the same. However, some premium cabin flights or off-peak bookings may offer better value in United miles than in Amex cash. You can also combine transferred points with miles you earn from flying United, which you cannot do with Amex cash back.
The trade-off is that once points become United miles, they are locked into United's ecosystem. You cannot transfer them back to Amex or to another airline partner.
United miles expiration and what happens after transfer
United miles expire if your MileagePlus account has no activity for 24 months. Activity includes earning miles, redeeming miles, or even logging into your account. Once you transfer Amex points to United, those miles follow United's expiration rules, not Amex's.
Amex points themselves do not expire as long as your card account remains open and in good standing. If you close your Amex card, you typically have a grace period (usually 30 to 60 days) to transfer any remaining points before they are forfeited, depending on your card agreement.
Before transferring a large number of points, confirm that your United account is active and that you have a plan to use the miles within 24 months. If you are not a regular United flyer, transferring points may not be the best use of your Amex balance.
Frequently Asked Questions
Can I transfer Amex points to United if I do not have a United credit card?
Yes. You do not need a United credit card to transfer Amex points to United or to hold a MileagePlus account. You only need a valid MileagePlus account number, which you can open for free on United's website. The transfer works the same way whether or not you also hold a United card.
What if I enter the wrong MileagePlus account number?
Contact Amex customer service when ready. If the account number does not exist or belongs to someone else, Amex may be able to reverse the transfer within a limited window, though this is not may provide. Once the miles post to an account, retrieving them becomes much harder. Always verify the account number twice before confirming the transfer.
Do transferred points count toward my annual spending bonus?
No. Transferring points does not count as a purchase or spending activity. It is a redemption of points you have already earned. Your annual spending bonus is based only on purchases you make with the card, not on how you redeem the points afterward.
Can I transfer Amex points to multiple airlines in the same month?
Yes. You can transfer to United one day and to another airline partner the next day. There is no limit on how many different partners you can transfer to or how often you can transfer, as long as you have enough points in your account.
Are there any fees for transferring points to United?
No. Amex does not charge a fee to transfer points to United or any other transfer partner. The transfer is included as a benefit of your card.