Cheapest return flights from St. Louis to Buenos Aires in April from $1240
AirHint found the following cheapest return flights from St. Louis (STL) to Buenos Aires (AEP) in April 2025 (see full year).
Return flights
| 18 Apr - 25 Apr | LATAM Airlines Group | ||
| 12 Apr - 15 Apr | LATAM Airlines Group |
Also check the deals for one-way flights from St. Louis to Buenos Aires in April.
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.
