Cleveland Hopkins International Airport (CLE), located within the city limits, twelve miles southwest of downtown, is Ohio’s largest airport. Over 8.4 million passengers used Cleveland Hopkins in 2016. Carriers operating at CLE include Air Canada, Allegiant Air, American Airlines, Delta Air Lines, Frontier Airlines, JetBlue Airways, Southwest Airlines, Spirit Airlines, and United Airlines. Frontier Airlines has designated the airport as a focus city. Nonstop flights are available to destinations across the United States as well as to Canada, Mexico, and the Caribbean. Cleveland Hopkins has three runways and a single passenger terminal with three concourses. CLE has screening checkpoints (North, Central, and South) that lead to all gates. The Central checkpoint is dedicated to TSA Pre-Check. Concourse A has 12 gates, including gates for international arrivals, Concourse B has 11 gates, and Concourse C has 25 gates.