The Rare Case Where Airlines and Passengers Both Win

What the surge of nonstop coast-to-coast flights says about the state of flying in the U.S.

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Baltimore’s airport used to beg airlines for more nonstop flights to the West Coast, but carriers said no. Now BWI may have too many on some routes.

Southwest Airlines flies nonstop to seven West Coast cities from Baltimore-Washington International Thurgood Marshall Airport. Alaska flies to five West Coast airports from BWI, Spirit to four. You can pick from five daily flights to San Diego on three different airlines.

“We...