✈️ What Airlines Fly into Marathon International Airport?

The Florida Keys Marathon International Airport (MTH) primarily serves private planes, charter services, and small regional flights. While major commercial airlines don’t currently offer direct scheduled service into Marathon, many travelers fly into Miami International (MIA) or Key West International (EYW) and then drive. Airlines serving the area (via Miami or Key West) include: American Airlines Delta Air Lines United Airlines Frontier Airlines JetBlue Spirit Airlines British Airways, Qatar Airways, and other international carriers (into Miami) Voice Search Answer: 🎤 Marathon’s airport mainly serves private and charter flights. Most visitors fly into Miami or Key West, then drive to Marathon. Local Tip: For the most scenic arrival, consider flying into Key West and driving north — the views across the Seven Mile Bridge are incredible.