Cheap flights from St. Louis to Porto Alegre from $378

Travelers frequently search for route combinations, such as St. Louis and Orlando, Las Vegas, Fort Lauderdale, Los Angeles, London, San Juan, Cancún, Denver, Reno, Seattle, San Francisco, New York, Washington, D.C., Amsterdam, Medellín, Oakland, Burbank, Beirut, Calgary, Charlotte.

Travelers frequently search for route combinations, such as Porto Alegre and Denver, New York, San Francisco, Minneapolis, Salt Lake City, Chicago, São Paulo, Belo Horizonte, Lima, Foz do Iguaçu, Manaus, Campo Grande, Curitiba, Rio de Janeiro, Brasília, Burbank, Jacksonville, Asunción, Roosevelt Roads Naval Station, Punta del Este.

The main airport in St. Louis is St. Louis Lambert International. It is also served by St. Louis Lambert International, MidAmerica St. Louis, General Wayne A. Downing Peoria International, Evansville Regional, Abraham Lincoln Capital, Williamson County Regional, Cape Girardeau Regional, Waynesville-St. Robert Regional, Central Illinois Regional, Columbia Regional.

The main airport in Porto Alegre is Salgado Filho International. It is also served by Campo dos Bugres.

Currently, you can fly between St. Louis and Porto Alegre with Frontier Airlines, Azul, Gol Transportes Aéreos, Air Canada, Copa Airlines.

If you don’t have specific dates for your trip between St. Louis and Porto Alegre, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between St. Louis and Porto Alegre, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around St. Louis. The main one is St. Louis Lambert International and other nearby airports include St. Louis Lambert International, MidAmerica St. Louis, General Wayne A. Downing Peoria International, Evansville Regional, Abraham Lincoln Capital, Williamson County Regional, Cape Girardeau Regional, Waynesville-St. Robert Regional, Central Illinois Regional, Columbia Regional

There are a number of airports in and around Porto Alegre. The main one is Salgado Filho International and other nearby airports include Campo dos Bugres.