"This is the worst experience I've ever had in my 35 years of business travel." 

Delta is still 5struggling 6amid the IT 7meltdown. This is what 8baggage claim looks like at a Hartsfield Jackson Atlanta International Airport. 

"I've never seen such a 9chaotic scenario with bags everywhere." 

Now the Department of Transportation is launching an investigation into Delta. 

"Why aren't there more people ready to help these customers navigate those 10disruptions, get them the hotel, the voucher, the rebooking, whatever they need?" 

So, if you find yourself in a mess like this, what do you need to know? 

"Most airlines have a policy, I think all except for a couple of the 11budget carriers have a policy where after three hours of delay, they will give you meal vouchers." 

Travel expert Dave Grossman recommends these tips for passengers. Ask the airline if they'll rebook you on another airline. Ask for hotel vouchers. While you're standing in line for an agent, also be on the phone with the airline. The phone might be faster. And know your credit card 12perks. 

"You might have a credit card that has travel or trip delay coverage, and you might not even realize it."

The federal government recently 13passed a passenger bill of rights, which allows passengers to get a full 14refund if their domestic flight is delayed by more than three hours or six hours internationally.