Cheap flights from Seattle to Porto Alegre from $474

Travelers frequently search for route combinations, such as Seattle and Mexico City, New York, Los Angeles, Guadalajara, Las Vegas, Calgary, Phoenix, San Francisco, Dallas, Chicago, Honolulu, San Diego, Ontario, Denver, Washington, D.C., Orlando, Santa Ana, Kahului, London, Tokyo.

Travelers frequently search for route combinations, such as Porto Alegre and Orlando, Denver, New York, Miami, São Paulo, Rio de Janeiro, Brasília, Belo Horizonte, Manaus, Curitiba, Natal, Asunción, Buenos Aires, Columbus, Los Angeles, London, Las Vegas, Atlanta, Baton Rouge, Portland.

Seattle is mainly served by Seattle–Tacoma International. But there are other airports nearby, including Kenmore Air Harbor Seaplane Base, Boeing Field.

The main airport in Seattle is Seattle–Tacoma International. It is also served by Vancouver International, Portland International, Bellingham International, Abbotsford International, Paine Field Everett, Vancouver Harbour Flight Centre, Victoria Inner Harbour SPB, Yakima Air Terminal, Pangborn Memorial.

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

Currently, you can fly between Seattle and Porto Alegre with Alaska Airlines, LATAM Airlines, Azul, Hawaiian Airlines, Copa Airlines.

If you don’t have specific dates for your trip between Seattle 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 Seattle 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 Seattle. The main one is Seattle–Tacoma International and other nearby airports include Vancouver International, Portland International, Bellingham International, Abbotsford International, Paine Field Everett, Vancouver Harbour Flight Centre, Victoria Inner Harbour SPB, Yakima Air Terminal, Pangborn Memorial