PEOPLE. >>> THE DEPARTMENT OF TRANSPORTATION IS OPENING AN INVESTIGATION INTO DELTA'S HANDLING OF WIDESPREAD FLIGHT DISRUPTIONS. THE AIRLINE IS STILL STRUGGLING, FOUR DAYS AFTER LAST WEEK'S GLOBAL TECH OUTAGE. ACCORDING TO THE FRIGHT -- FLIGHT TRACKING SERVICE, HUNDREDS OF FLIGHTS HAVE BEEN CANCELED WITH MORE DELAYED. >> Reporter: LINDSEY, IT'S A LITTLE CHAOTIC AT THE AIRPORT RIGHT NOW, LOTS OF CANCELLATIONS WITH DELTA AIRLINES. THIS LINE BEHIND ME IS THE TSA LINE BUT JUST BEYOND, THAT IS A TICKETING ASSISTANCE LINE AND IT'S PRETTY FULL, IT IS WINDING AROUND, DOZENS AND DOZENS OF TRAVELERS HERE AT MINNEAPOLIS- ST. PAUL INTERNATIONAL AIRPORT, THEY ARE IMPACTED BY CANCELLATIONS AND AT LAST CHECK, FLIGHT AWARE SAYS 77 DELTA FLIGHTS WERE CANCELED, ALL BUT ONE, OR WITH DELTA AIRLINES. LIKE YOU MENTIONED, THE DEPARTMENT OF TRANSPORTATION IS NOW OPENING UP AN INVESTIGATION INTO DELTA AIRLINES TO ENSURE THAT IT IS UP AND RUNNING AGAIN AND IT IS TAKING CARE OF PASSENGERS. WE KNOW DELTA IS WORKING 24/7, TO ENSURE THAT THEY GET OPERATIONS UP AND RUNNING AGAIN AND THE DEPARTMENT OF TRANSPORTATION IS OPENING AN INVESTIGATION TO MAKE SURE THAT HAPPENS. WE'VE SPOKEN WITH MULTIPLE PASSENGERS, HOPEFUL TRAVELERS, WHO DIDN'T KNOW THERE FLIGHT WAS CANCELED UNTIL THEY GOT TO THE AIRPORT. SOME DRIVING HOURS JUST TO GET THERE AND LEARNING THERE FLIGHT WAS CANCELED EITHER WHEN THEY GOT TO THE AIRPORT OR ON THE TAXI RIDE OVER. SO REALLY A LOT OF CHAOS HERE TODAY. WE ALSO SPOKE WITH A LOCAL TRAVEL AGENT OR RATHER A LOCAL EXPERT THAT SAYS KEEP YOUR RECEIPT, IF YOU ARE WORKING TO GET REIMBURSED, KEEP EVERY RECEIPT, EVEN ONES THAT YOU THINK MAY NOT GET REIMBURSED BECAUSE DELTA IS RECEIVING FEDERAL PRESSURES SO THEY SAY TO KEEP EVERYTHING AND HOPE FOR THE BEST AND THEY SAY LOOK INTO TRAVEL INSURANCE, IF YOU HAD TRAVEL INSURANCE TO FILL THE GAP WHERE DELTA MIGHT BE LACKING AND BE PATIENT BECAUSE IT'S EXPECTED THIS WILL TAKE A LOT OF TIME. REMEMBER THEM -- THE SOUTHWEST MELTDOWN IN 2022 AND IT TOOK WEEKS, IF NOT MONTHS TO GET EVERYTHING REIMBURSED BUT THRIFTY TRAVELERS THEY DO NOT TAKE NO FOR AN ANSWER, LIKE I MENTIONED, DOZENS OF FLIGHTS CANCELED HERE TODAY BUT THERE ARE STILL A LOT OF HOPE