{"success":true,"comparison":"frontier-airlines-world-mastercard-vs-southwest-plus","summary":{"updatedAt":"2026-06-04T20:16:46.072Z","pageUrl":"https://cardcurator.ai/compare/frontier-airlines-world-mastercard-vs-southwest-plus","jsonUrl":"https://cardcurator.ai/api/public/compare/frontier-airlines-world-mastercard-vs-southwest-plus/summary","methodologyUrl":"https://cardcurator.ai/how-we-rank-cards","dataSourcesUrl":"https://cardcurator.ai/data-sources","shareTitle":"Frontier Airlines World Mastercard vs Southwest Plus","shareText":"The Frontier Airlines World Mastercard and Southwest Plus are closely matched. The better pick depends on whether you value lower fees, the current signup bonus, or category-specific earn rates more. On raw upside, Frontier Airlines World Mastercard tops out at 15x versus 2x for Southwest Plus. Current signup bonus values are roughly $450 for Frontier Airlines World Mastercard and $800 for Southwest Plus. Updated June 4, 2026. Source: https://cardcurator.ai/compare/frontier-airlines-world-mastercard-vs-southwest-plus","evidenceBullets":["Frontier Airlines World Mastercard wins 1 of 4 comparison categories in CardCurator's quick verdict model.","Top earn rate: Frontier Airlines World Mastercard reaches 15x; Southwest Plus reaches 2x.","Annual fee: Frontier Airlines World Mastercard is $99/yr; Southwest Plus is $99/yr.","Current public bonus values are approximately $450 and $800."],"winner":{"name":"Frontier Airlines World Mastercard","slug":"frontier-airlines-world-mastercard","score":1,"maxEarnRate":15,"annualFee":99},"loser":{"name":"Southwest Plus","slug":"southwest-plus","score":1,"maxEarnRate":2,"annualFee":99}}}