Valley International Airport (HRL), located in Harlingen, Texas, is the largest airport in the Rio Grande Valley. Nearly 700,000 passengers and visitors walk through our terminal annually. Southwest Airlines offers nonstop service to Houston/Hobby and Austin. United Express offers nonstop service to Houston/Intercontinental. American Airlines offers nonstop service to Dallas. Frontier Airlines offers nonstop service to Chicago and Denver. Delta Air Lines offers seasonal nonstop service between Harlingen and Minneapolis/St. Paul between December and April. Sun Country Airlines offers seasonal nonstop service between Harlingen and Minneapolis/St. Paul between November and April. Swift Airlines, and Sun Country Airlines offer scheduled ***** charter flights year-round.