Delta Airlines flights can be booked through the airline's website or one of its many travel agencies. If booking online, Delta offers a variety of options for pricing and convenience. Delta also allows passengers to make changes to their reservation online up until 60 minutes before the scheduled departure time.
If traveling with a travel agent, Delta offers negotiated rates and reduced wait times if booked well in advance. Travel agents can also add on items such as luggage and meals not available through Delta's website.
When making reservations, it is important to note that Delta Airlines has different flight change numbers depending on the destination. For example, flights to Hawaii have a change number of 880 while flights to the mainland US have a change number of 800. When making a reservation it is best to check the specific change number for your flight before booking so there are no surprises when checking in at the airport.