The city of Atlanta has been keen to retain the title of world's busiest airport -- or world's most traveled, as officials at one point preferred to call it.

Yet the volume and concentration of flights and passengers handled at Hartsfield-Jackson also means that when things go wrong, it can affect thousands of people.

That’s what happened when a day of thunderstorms led to a Delta Air Lines meltdown earlier this month that disrupted the travel plans of hundreds of thousands of passengers.

Channel 2's Jim Strickland reports.

While Chicago O'Hare in 2014 was briefly the world's busiest in flight counts, Atlanta has had the most flights for the past two years.

Hartsfield-Jackson had a 1.8 percent increase in flights in 2016, while Chicago O’Hare had a 0.9 percent decline.