The Aadvantage MileUp Card edges out the Citi Diamond Preferred for most cardholders — it wins on 2 of 4 comparison categories and offers 15,000 pts signup bonus earns more (up to 2x vs 1x). The Citi Diamond Preferred is the better choice if you prioritize a different rewards ecosystem.
Aadvantage MileUp Card vs Citi Diamond Preferred
Side-by-side comparison of fees, rewards, benefits, and transfer partners.
Comparison Method
CardCurator compares measurable differences first: annual fee, current welcome offer, top-end earning, and recurring credits. If the cards are close, the right answer depends on spending pattern and perk usage rather than headline prestige.
- Grocery Stores (including delivery) 2x
- Eligible American Airlines Purchases 2x
- All Other Purchases 1x
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Common Questions: Aadvantage MileUp Card vs Citi Diamond Preferred
Is the Aadvantage MileUp Card or Citi Diamond Preferred better for dining?
Neither card offers a specific dining bonus — both earn their base rate on restaurant purchases.
Which has the higher signup bonus in 2026?
Aadvantage MileUp Card currently offers 15,000 pts signup bonus (spend $500 in 3 months). Citi Diamond Preferred offers no current bonus. Aadvantage MileUp Card has the larger bonus.
Which card is better for international travel?
Both cards charge foreign transaction fees (Aadvantage MileUp Card: 3%, Citi Diamond Preferred: 3%). Consider a no-foreign-fee card for international travel.
Can I hold both the Aadvantage MileUp Card and the Citi Diamond Preferred?
In most cases yes — holding both is allowed and can be a smart strategy for maximizing rewards across different spending categories. Both cards are from Citi, so check their specific application rules.