Delta Air Lines said it now allows its passengers to track their checked bags and is adding self-service baggage kiosks at airports.

Atlanta-based Delta, which charges $25 for a first checked bag at the airport, said travelers can find out the status of their bag online or at kiosks. There they can get information such as whether the bag has been loaded onto the plane.

The kiosks can also show which carousel bags will arrive on and allow passengers whose bags are delayed to file a claim. By the end of the year, Delta will have the kiosks at 18 airports, including Hartsfield-Jackson International Airport.

Delta also now allows travelers to sign up for notifications on their checked bags, in case a bag doesn't make it onto the same flight.