Yes, you can transfer American Express Membership Rewards points to United Airlines, but only through specific Amex cards and with some limits on how the transfer works.
American Express offers point transfers to United Airlines as part of its Membership Rewards program, but not every Amex card gives you this option. The cards that do allow transfers to United include the Platinum Card, the Business Platinum Card, and a few others in the premium tier. When you transfer, your Amex points convert to United miles at a 1:1 ratio — meaning 10,000 Amex points become 10,000 United miles.
The transfer itself is fast. Once you initiate it through your Amex account online, the miles typically land in your United account within 24 hours. However, there are some rules about minimum transfers and occasional bonus promotions that can change the value of what you're moving.
Key Takeaways
- Only certain Amex cards allow transfers to United Airlines; the Platinum and Business Platinum are the main ones that do.
- Points transfer at a 1:1 ratio, so 10,000 Amex points equals 10,000 United miles with no conversion fee.
- Transfers complete within 24 hours once you request them through your Amex online account or mobile app.
- Amex occasionally runs transfer bonuses where you get extra miles for moving points in bulk, usually 25% to 50% more.
Which Amex Cards Let You Transfer to United
The American Express Platinum Card is the most common card that offers United transfers. If you hold this card, you can move Membership Rewards points to United whenever you want. The Business Platinum Card works the same way for business account holders.
Some other premium Amex cards, like the Business Gold Card, also include United as a transfer partner, though the full list changes occasionally. The easiest way to confirm whether your specific card allows transfers is to log into your Amex account, go to the Membership Rewards section, and look for the transfer partners list. If United appears there, you can transfer.
Standard Amex cards — like the Blue Cash or Green Card — typically do not offer transfers to airline partners. With those cards, you're usually limited to using points for cash back or statement credits instead.
How to Transfer Your Points to United
Log into your American Express account online or open the Amex mobile app. Navigate to your Membership Rewards account and look for the "Transfer Points" or "Redeem Points" section. You should see United Airlines listed among the transfer partners if your card allows it.
Click on United and enter the number of points you want to transfer. Amex usually requires a minimum transfer of 1,000 points, though some promotions may have different minimums. Enter your United MileagePlus account number so the miles go to the right place. Review the details and confirm the transfer.
Once you submit, Amex will show you a confirmation number. The miles typically appear in your United account within 24 hours, though it can occasionally take up to two business days. You'll receive an email confirmation from both Amex and United when the transfer is complete.
Transfer Bonuses and Promotions
Amex regularly runs promotions where you earn bonus miles when you transfer points to airline partners, including United. These bonuses typically range from 25% to 50% extra miles on top of your transfer. For example, a promotion might offer 50% bonus miles, meaning 10,000 points transferred would become 15,000 United miles instead of 10,000.
These promotions are not permanent and change several times per year. Amex announces them via email to cardholders and displays them in your account under the Membership Rewards section. If you're planning a large transfer, it's worth waiting to see if a bonus promotion is coming, though there's no way to predict the exact timing.
You can check your Amex account regularly or sign up for Amex notifications to be alerted when new transfer bonuses launch. Some cardholders set a reminder to check every few months.
What Happens After Your Miles Arrive at United
Once your miles land in your United MileagePlus account, they work like any other miles you've earned. You can use them to book flights on United, its partners, or through United's award chart. The miles don't expire as long as you have some account activity at least once every 18 months — which includes earning, transferring, or redeeming miles.
United miles can also be used for seat upgrades, baggage fees, or other travel-related purchases through the MileagePlus program. Some people transfer Amex points to United specifically to top up their balance just before booking a flight they've already found.
Limits and Restrictions on Transfers
There is no annual cap on how many Amex points you can transfer to United, but Amex does enforce a minimum transfer amount — usually 1,000 points at a time. You also cannot transfer fractional points; the number must be a whole number.
Transfers are one-way only. Once your Amex points become United miles, you cannot convert them back to Amex points. This is why it's worth thinking through whether you actually plan to use the miles before you transfer.
If your Amex card is closed or your account is in bad standing, you may lose the ability to transfer points. Amex also reserves the right to change which partners it works with, though United has been a stable partner for many years.
Alternatives If Your Card Doesn't Transfer to United
If your Amex card doesn't allow transfers to United, you have other options. You can use your Membership Rewards points for cash back, statement credits, or transfers to other airline partners like Delta, Southwest, or American Airlines if your card supports those.
Some Amex cards let you redeem points directly for United gift cards or United travel bookings through the Amex website, though this typically gives you less value per point than a direct transfer would. You can also downgrade or upgrade to a different Amex card that does offer United transfers, though this involves a new process and a new annual fee.
Frequently Asked Questions
How long does it take for Amex points to show up as United miles?
Transfers usually complete within 24 hours. In rare cases, it can take up to two business days. You'll receive email confirmations from both Amex and United when the transfer is done. If your miles don't appear after two business days, contact United customer service with your transfer confirmation number from Amex.
Can I transfer United miles back to Amex points?
No. Transfers are one-way only. Once your Amex points become United miles, they stay as United miles. This is why you should only transfer points you're confident you'll use for United flights or United partner redemptions.
Is there a fee to transfer points to United?
No. Amex does not charge a fee for transferring Membership Rewards points to United or any other airline partner. The transfer is free, and the 1:1 conversion rate has no hidden costs.
What's the minimum number of points I can transfer?
The standard minimum is 1,000 Amex points per transfer. Some promotional offers may have different minimums, so check your account when you're ready to transfer. There is no maximum limit on how many points you can transfer at once.
Do transferred miles expire?
United miles don't expire as long as your MileagePlus account has activity at least once every 18 months. Activity includes earning, transferring, or redeeming miles. Transferred Amex points become regular United miles with the same expiration rules as any other miles in your account.