Again, you want to avoid as many physical touchpoints with other people during your travels as possible. Fortunately, you can check into your flight online and download the boarding pass to your phone, allowing for fewer interactions and forgoing the need to hand over a ticket. You will still have to hand over your form of identification at TSA security, however. On the plus side, the TSA has implemented new social distancing measures such as placing markers where travelers should stand, staggering the security lanes when possible, and allowing people to keep their mask on—though they may ask for it to be removed or adjusted when verifying identity.
To skip interacting with a desk agent and prevent your bag from touching multiple people, opt for a carry-on bag instead of checked luggage. While at the airport and when boarding, keep at least six feet of distance from other travelers. Some airlines have implemented rules to help with this, like Delta boarding all of its flights row by row, starting from the rear of the plane.