Amtrak, the national passenger rail system, provides service to Portland at Union Station on three routes. Long-haul train routes include the "Coast Starlight" (with service from Los Angeles to Seattle) and the "Empire Builder" (with service to Chicago). The "Amtrak Cascades" state-supported trains operate between Vancouver, B.C., and Eugene, Oregon, and serve Portland several times daily. The city is also served by Greyhound Lines intercity bus service, which also operates BoltBus, an express bus service. The city's first airport was the Swan Island Municipal Airport, which was closed in the 1940s.