American Express® Green vs Frontier Airlines World Mastercard®
Side-by-side comparison
| American Express® Green | Frontier Airlines World Mastercard® | |
|---|---|---|
| Annual fee | $150 | $99 |
| Welcome offer | 40,000 Membership Rewards® Points | 100,000 miles |
| Dining | 3x | 3x |
| Groceries | 1x | 1x |
| Gas | 1x | 1x |
| Travel | 3x | 5x |
| Streaming | 1x | 1x |
| Everything else | 1x | 1x |
| Est. yearly rewards* | $402 | $424 |
| Points type | Transfers to airlines & hotels | Locked to Frontier Miles |
| Network | Amex | Mastercard |
*Estimated yearly rewards on typical household spending, every point valued at a flat 1 cent. Verified June 2026. See your own numbers in the calculator.
The verdict
On a typical year of household spending, the American Express® Green earns about $402 a year in rewards and the Frontier Airlines World Mastercard® about $424, valuing every point at a flat 1 cent. The American Express® Green charges $150, but carries about $199 in annual statement credits that offset it for anyone who uses them. The Frontier Airlines World Mastercard® charges $99, which you clear through its rewards and perks. Counting rewards, fees, and any credits, the American Express® Green delivers more total value, about $27 a year more for a typical spender, mostly because it carries more in annual statement credits. The bigger difference is the ceiling: the American Express® Green earns points you can move to travel partners for outsized value, while the Frontier Airlines World Mastercard® stays locked to a single airline or hotel program. Favor the American Express® Green if you will use travel transfers, the Frontier Airlines World Mastercard® if you want simplicity. On the sign-up bonus, the Frontier Airlines World Mastercard® currently has the larger welcome offer. A welcome bonus is a one-time event, so weigh it apart from the ongoing rewards.
Pick the Frontier Airlines World Mastercard® if your spending leans toward travel.