Argentina is ending a two-week suspension of flights from Mexico that has strained relations between the two countries.
Cabinet chief Sergio Massa says service will resume Friday because the swine flu virus shows signs of being less deadly than feared.
Airport authorities will continue to monitor travelers arriving from North America.
Mexican President Felipe Calderon accused Argentine officials last week of using the flight ban to distract attention from a dengue outbreak that has infected nearly 25,000 people and killed 5.
Argentine Foreign Minister Jorge Taiana said Thursday the ban was a precautionary measure.
The South American nation has confirmed one case of swine flu.