Cheapest return flights from Atlanta to Santiago in September from $613

AirHint found the following cheapest return flights from Atlanta (ATL) to Santiago (SCL) in September 2025 (see full year).

Return flights

12 Sep - 17 Sep Spirit Airlines
13 Sep - 17 Sep Spirit Airlines
17 Sep - 24 Sep Spirit Airlines
18 Sep - 22 Sep Spirit Airlines
25 Sep - 05 Oct Frontier Airlines
17 Sep - 30 Sep Frontier Airlines
08 Sep - 15 Sep Frontier Airlines
19 Sep - 21 Sep Spirit Airlines
25 Sep - 05 Oct LATAM Airlines Group direct
17 Sep - 30 Sep LATAM Airlines Group direct
19 Sep - 21 Sep LATAM Airlines Group direct
18 Sep - 22 Sep Delta direct
15 Sep - 02 Oct Delta

Also check the deals for one-way flights from Atlanta to Santiago in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Santiago

Cheap car rent in Santiago

Feel free to contact us with any feedback or request another flight research.