U.S. airlines are adding dozens of extra flights, and even some temporary routes, to get fans to next week's Super Bowl game in Phoenix. United's added the most, with 55 extra flights, both others are not far behind. As well, some airlines are using larger-than-usual planes to create extra seats.
Obviously, most—but far from all—of the extra traffic is being generated in the Boston and Seattle fan areas. More details from USA Today.