Des Moines International Airport will again make flu shots and mist available to the traveling public. Nurses from WesleyLife Community Services will be at the airport from 5:30 to 7:30 a.m. and 1 to 4:30 p.m. on Mondays, Tuesdays, Thursdays and Fridays, starting Sept. 20. The service will run until Nov. 30. Costs are $20 per shot and $30 per nasal mist. The shots will be available to people age 9 and older, while the mist will be available to people between the ages of 9 and 49.