Especially when flying with airlines like Delta, knowing their carry-on size restrictions is crucial. Ever found yourself at the check-in counter, fingers crossed, hoping your bag fits the sizer?

Interestingly, there is no weight limit for carry-on bags as long as they follow these size metrics. If you are flying from Beijing or Shanghai, however, Delta will require the carry-on to be 22 ...

From Delta to American Airlines and even JetBlue ... most airlines also typically allow at least one free carry-on bag.

The announcement comes as airlines like Delta are starting to offer more precise and real-time luggage updates directly in their apps. However, with existing tracking technology, Kelly said that ...