Orlando International Airport (MCO) is unique in that it is not a traditional "primary hub" for a legacy carrier like Atlanta is for Delta, but rather a massive "Focus City" or "Operating Base" for multiple airlines. In 2026, Southwest Airlines remains the largest carrier at MCO, treating it as a key nexus for its point-to-point network. Spirit Airlines and Frontier Airlines also maintain significant bases in Orlando, using the airport as a primary gateway for their leisure-focused routes to the Caribbean and Latin America. JetBlue is another major player, recently expanding its footprint in the new Terminal C. Among the legacy carriers, Delta, United, and American all have substantial daily operations but categorize Orlando as a high-priority "Focus City" rather than a headquarters hub. Internationally, Orlando has seen record growth in 2026, with TAP Air Portugal launching new non-stop service to Lisbon, joining established international heavyweights like British Airways and Virgin Atlantic which use Orlando as their primary leisure entry point into the United States.