Pre-Tax Margin Outperformance

Unique, Diversified Business Model ● ● Passenger Leisure (~72% of Revenue(¹)) Unique low cost airline with focus on leisure travel Flexible capacity model focused on peak demand Greater resilience and growth opportunities than other passenger carriers Aircraft Standard fleet of 42 Boeing 737s that are used across scheduled service and charter; 12 737 Freighters used for Cargo 1. Percentage of total revenue as of LTM Sep 30, 2023. 2. As of Sep 30, 2023 Sun Country Business Line Synergies ● ● 3 @ 0 Cargo (-10% of Revenue (1)) Long-term asset-light contract with pass-through costs High margins and cash flows • Partnership with one of the fastest growing companies globally Charter (-18% of Revenue (¹)) • A leader in U.S. narrowbody charter Contracted recurring revenue with pass- through costs (including fuel) • Large, stable customer base Shared Foundational Assets Pilots 618(2) Pilots that serve across the entire set of assets 2 Approximately 1/3 of fuel usage is paid for by Charter and Cargo customers Shared Services An already lean operation supporting the entire set of assets Sun Country's symbiotic business lines share assets to maximize operating leverage 4

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