How much is a flight from Saint Louis to Buenos Aires?

There’s no fixed price — fares between Saint Louis and Buenos Aires can vary a lot by day or time.

Pick a travel date to see today’s available fares.

Flying during the week can be more affordable, as weekend flights tend to be pricier. Also consider demand and availability: the last remaining seats often come at higher fares!

Planning flights between Saint Louis and Buenos Aires? Don’t forget the airport options

Especially when flying to medium or large cities, it's worth checking all possible airport combinations before booking.

• Airports in Saint Louis: Saint Louis - Lambert is the only airport in this city.
• Airports in Buenos Aires: Buenos Aires features 3 airports - El Palomar, Jorge Newbery, Ministro Pistarini.

Check for differences in transport costs to and from each airport — they affect your total spend. Choosing the right airport can make a real difference in price and timing.

Flight filters for the route Saint Louis – Buenos Aires

Customize your search on Jetcost to focus only on flights that suit your needs. Whether you want a direct connection, specific airline, or shorter layover, filters help you find it faster.

Other popular destinations

Flights to Argentina are often searched alongside: Buenos Aires, Córdoba, Iguazu, Mendoza, San Carlos de Bariloche.

The cheapest flights might leave at odd hours or arrive at less central airports — keep that in mind. If you travel often, you can always select your trusted airlines from the available options.