Citi® / AAdvantage® MileUp® vs One Key™ Card
Side-by-side comparison
| Citi® / AAdvantage® MileUp® | One Key™ Card | |
|---|---|---|
| Annual fee | No annual fee | No annual fee |
| Welcome offer | 15,000 American Airlines AAdvantage® miles | $250 in OneKeyCash |
| Dining | 1x | 3x |
| Groceries | 2x | 3x |
| Gas | 1x | 3x |
| Travel | 1x | 3x |
| Streaming | 1x | 1.5x |
| Everything else | 1x | 1.5x |
| Est. yearly rewards* | $352 | $632 |
| Points type | Locked to American Airlines AAdvantage | Locked to One Key |
| Network | Mastercard | Mastercard |
*Estimated yearly rewards on typical household spending, every point valued at a flat 1 cent. Verified August 2026. See your own numbers in the calculator.
Welcome bonus and value over time
| Over time | Citi® / AAdvantage® MileUp® | One Key™ Card |
|---|---|---|
| Welcome bonus | 15,000 American Airlines AAdvantage® miles | $250 in OneKeyCash |
| To earn it | $500 in 3 months | $1,000 in the first 3 months |
| Est. first-year value* | $502 | $882 |
| Est. ongoing value / yr* | $352 | $632 |
The One Key™ Card wins on both fronts: it comes out ahead in year one on the welcome offer and stays ahead every year after. Short term or long, it is the stronger pick on the numbers.
*First-year value counts the welcome bonus, estimated rewards, and annual credits, minus the annual fee; ongoing value is a typical year after. Every point at a flat 1 cent.
Perks, credits, and redemptions
| Perks | Citi® / AAdvantage® MileUp® | One Key™ Card |
|---|---|---|
| Lounge access | None | None |
| Annual credits | None | None |
| Points & redemptions | Locked to a single program | Locked to a single program |
The two are closely matched on perks and redemptions, so the welcome offer and everyday earning above are what should decide it.
Transfer partners and point value
Neither card earns transferable points, so redemptions are cash-back or fixed portal value on both, roughly a cent per point. There is no airline or hotel transfer angle to separate them.
The verdict
On a typical year of household spending, the Citi® / AAdvantage® MileUp® earns about $352 a year in rewards and the One Key™ Card about $632, valuing every point at a flat 1 cent. The Citi® / AAdvantage® MileUp® has no annual fee, so its rewards are all profit. The One Key™ Card has no annual fee, so its rewards are all profit. Counting rewards and any credits, the One Key™ Card delivers more total value, about $280 a year more for a typical spender, mostly because it earns more where you spend most, on everything else and groceries. Neither leans on transferable points, so the deciding factors are the welcome offer, the card network, and which everyday perks you will actually use. On the sign-up bonus, the One Key™ Card currently has the larger welcome offer. A welcome bonus is a one-time event, so weigh it apart from the ongoing rewards.
Pick the One Key™ Card if your spending leans toward dining, groceries, gas.