. >> this is basically something that comes but -- about with age and utizeation. it's not fleet-wide. >> southwest is inspecting dozens of boeing 737 airplanes and cancelled another 300 flights nationwide. we're live at the airport where we found plenty of unhappy passengers. >> you can see why. 600 flights grounded so far this weekend, and we found some people today who have been stuck trying to get home for two days now. so far the best advice is if you have to catch a southwest flight, call ahead before you dom the airport. this is the unlucky half of the high school jazz band trying to get home to nebraska. they're holding tickets for a cancelled southwest flight and are stranded in san francisco. and these kids laughing are in the lucky half of the band. they booked their tickets on a different airline and are headed home. >> trying to charter a bus. be $9,000, and you know, we're a public high school. it's not like we can write checks. >> other passengers on cancelled flights had no choice but to pay pick bucks to buy last-minute tickets on different airline