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Amex points can transfer to United MileagePlus. 1:1 transfer ratio. Instant transfers. Star Alliance award access.

But is transferring Amex points to United worth it?

I've transferred Amex points to United for five years. Business class to Europe. Star Alliance awards. Here's what I learned.

This guide answers the question that matters: Should you transfer Amex points to United in 2026?

Quick Answer: Amex points transfer to United MileagePlus at 1:1 ratio. Transfer time is instant to 48 hours. Best redemption is Star Alliance international business class (60,000-80,000 miles). United miles do not expire on active accounts. Transfer strategically for Star Alliance awards.

Amex to United Transfer Details

Transfer Ratio

Transfer ratio: 1:1 Transfer time: Instant to 48 hours Minimum transfer: 1,000 points

How to transfer:

  1. Log in to Amex Membership Rewards
  2. Navigate to Transfer Points
  3. Select United MileagePlus
  4. Enter United MileagePlus number
  5. Enter amount and confirm
  6. Miles post instantly to 48 hours

Transfer Limits

Minimum transfer: 1,000 points Maximum transfer: No limit (subject to Amex account limits) Transfer increments: 1,000 points

Note: Transfers are irreversible. Once points are transferred to United, they cannot be transferred back to Amex.

The reality: I've made the mistake of transferring before checking availability. Don't do it. Points are flexible in your Amex account. They become locked once transferred.

Best United Redemptions

Travel rewards points and miles visualization
Travel rewards points and miles visualization
Travel rewards points and miles visualization

Star Alliance Business Class

Value: 4-8 cents per mile

Why it wins: No fuel surcharges on most Star Alliance partners. Reasonable award pricing.

Best redemptions:

  • US to Europe (business): 60,000-70,000 miles one-way ($4,000-6,000 value)
  • US to Asia (business): 70,000-80,000 miles one-way ($5,000-8,000 value)
  • US to Australia (business): 80,000 miles one-way ($6,000-10,000 value)

The catch: Award availability varies by partner. Book early.

United Business Class

Value: 3-6 cents per mile

Why it wins: United Polaris business class. Lie-flat seats. Direct flights.

Best redemptions:

  • US to Europe (Polaris): 70,000-80,000 miles one-way ($4,000-6,000 value)
  • US to Asia (business): 70,000-80,000 miles one-way ($5,000-8,000 value)
  • Domestic first class: 12,500-25,000 miles ($500-800 value)

The catch: United award pricing is dynamic. Prices vary by demand.

Domestic Economy

Value: 1.5-2.5 cents per mile

Why it wins: No blackout dates on United flights. Reasonable award pricing.

Best redemptions:

  • Domestic economy: 12,500-25,000 miles roundtrip ($300-600 value)
  • Short-haul economy: 10,000-15,000 miles roundtrip ($200-400 value)

The catch: Dynamic pricing means prices vary significantly. Book early for best prices.

United MileagePlus Value

Redemption Value

Redemption TypeMiles RequiredCash ValueValue Per Mile
Business to Europe60,000-80,000$4,000-6,0005-10 cents
Business to Asia70,000-80,000$5,000-8,0006-11 cents
Domestic first12,500-25,000$500-8002-6 cents
Domestic economy12,500-25,000$300-6001.5-5 cents
Short-haul economy10,000-15,000$200-4001.5-4 cents

Transfer Strategy: When and How

Before You Transfer

Golden rules:

  1. Never transfer points without a specific redemption in mind
  2. Always check award availability before transferring
  3. Understand that transfers are irreversible
  4. Know the expiration policy of each program

The reality: I've made the mistake of transferring before checking availability. Don't do it. Points are flexible in your Amex account. They become locked once transferred.

The Transfer Process

  1. Search for award availability on United.com or Star Alliance partner websites
  2. Confirm seats are available for booking
  3. Log in to Amex Membership Rewards
  4. Navigate to Transfer Points
  5. Select United MileagePlus
  6. Enter United MileagePlus number
  7. Enter amount and confirm
  8. Miles post instantly to 48 hours
  9. Book award on United.com

United Miles Expiry

Airport lounge access with premium credit card
Airport lounge access with premium credit card
Airport lounge access with premium credit card

Expiry Policy

Miles expire: United miles do not expire on active accounts Keep account active: Any earning or redemption activity every 18 months

How to keep miles active:

  • Earn miles through credit card spending
  • Transfer points from Amex
  • Redeem miles for awards
  • Purchase small amount of miles (1,000 miles minimum)

The strategy: Set calendar reminder for 15 months. Earn or redeem small amount to keep account active.

Amex Cards That Transfer to United

American Express Platinum

Annual fee: $695 ($55-695 effective after credits) Sign-up bonus: 150,000 points after $8,000 spend in 6 months (targeted) Best for: Flexible transfers to United

Earning rates:

  • 5x points on flights booked directly with airlines
  • 5x points on prepaid hotels via Amex Travel
  • 1x points on everything else

Transfer to United:

  • Transfer ratio: 1:1
  • Transfer time: Instant to 48 hours
  • Minimum transfer: 1,000 points

Value: 150,000 points worth $1,500-3,000+ with United transfers.

American Express Gold

Annual fee: $250 ($130 effective after $120 dining credit) Sign-up bonus: 60,000 points after $4,000 spend in 6 months Best for: Dining and grocery earning

Earning rates:

  • 4x points at restaurants worldwide
  • 4x points at US supermarkets (up to $25,000/year)
  • 3x points on flights booked directly with airlines
  • 1x points on everything else

Transfer to United:

  • Transfer ratio: 1:1
  • Transfer time: Instant to 48 hours
  • Minimum transfer: 1,000 points

Value: 60,000 points worth $600-1,200+ with United transfers.

Questions People Ask

Credit card payment terminal and rewards
Credit card payment terminal and rewards
Credit card payment terminal and rewards

"Can I transfer points back from United?"

No. Transfers are irreversible. Once points are transferred to United, they cannot be transferred back to Amex.

"Do Amex points expire?"

No. Membership Rewards points do not expire as long as your account is open and in good standing.

"Do United miles expire?"

United miles do not expire on active accounts. Any earning or redemption activity every 18 months keeps account active.

"Can I combine points from multiple Amex cards?"

Yes. Points from all Amex Membership Rewards cards pool together. You can transfer from the combined balance.

"Are there minimum transfer amounts?"

Yes. Minimum transfer is 1,000 points. Transfers must be in 1,000-point increments.

"What if award availability disappears during transfer?"

For instant transfers, this is rarely an issue. For delayed transfers, award availability can change. Consider holding awards when possible.

The Bottom Line

Transferring Amex points to United delivers solid value for Star Alliance awards. 1:1 transfer ratio. Instant to 48 hour transfer time. Best redemption is Star Alliance international business class (60,000-80,000 miles).

Best for: Star Alliance awards, United loyalists, international business class

Not best for: Domestic economy, travelers who want instant transfers

Value: 4-8 cents per mile on Star Alliance business class redemptions

Miles expiry: United miles do not expire on active accounts

Know the transfer details. Know the redemption sweet spots. Know the miles expiry. Then transfer Amex points to United strategically.

Final Verdict: Transferring Amex points to United MileagePlus delivers solid value for Star Alliance awards. 1:1 transfer ratio. Instant to 48 hour transfer time. Best redemption is Star Alliance international business class at 60,000-80,000 miles one-way ($4,000-8,000 value, 5-10 cents per mile). United miles do not expire on active accounts. Transfer strategically for Star Alliance awards.