The next time you pull of those shoes and get those bags opened for inspection at the local airport, you might want to think about getting a flu shot right there as well.

A score of U.S. airports are now offering flu shots at check-in kiosks, which is nothing new this time of year. But, in the past, these have been performed in airport clinics -- not at the curbside (if you will). Why? Airport customers don't want to run the risk of missing those flights.

Airports in Atlanta, Chicago, Denver and Newark are offering "airside" flu shots since the time estimation for a flu shot by each passenger is now pretty easy to come by.