How does KAYAK find such low prices on flights from Washington to Porto Alegre?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Porto Alegre.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Porto Alegre?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto Alegre from Washington is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Washington to Porto Alegre?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto Alegre with an airline and back to Washington with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Porto Alegre?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto Alegre from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$1,260 CHEAP FLIGHTS from Washington to Porto Alegre

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Cheap Flights from Washington to Porto Alegre

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

Recent round-trip flight deals from Washington to Porto Alegre

Wed, Dec 2 - Mon, Dec 7

5:35 pm - 12:25 amSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

25h 50m2 stops San Francisco Panama City Tocumen Intl

1:35 am - 11:44 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

27h 09m2 stops Panama City Tocumen Intl San Francisco

$1,260Copa Airlines

Mon, Nov 23 - Mon, Nov 30

6:00 am - 6:40 amSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

19h 40m2 stops Los Angeles Lima J Chavez Intl

5:40 pm - 8:50 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

32h 10m2 stops Santiago Arturo Merino Benitez Atlanta Hartsfield-Jackson

$1,295Multiple Airlines

Sat, Dec 5 - Fri, Dec 11

3:28 pm - 12:25 amSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

27h 57m2 stops San Francisco Panama City Tocumen Intl

1:35 am - 9:58 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

25h 23m2 stops Panama City Tocumen Intl Los Angeles

$1,397Copa Airlines

Sun, Jan 31 - Thu, Feb 4

9:30 am - 4:50 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

26h 20m2 stops Los Angeles Santiago Arturo Merino Benitez

7:30 am - 12:09 amPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

21h 39m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,424LATAM Airlines

Sun, Jan 31 - Thu, Feb 4

7:50 am - 4:50 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

28h 00m2 stops Atlanta Hartsfield-Jackson Santiago Arturo Merino Benitez

7:30 am - 12:09 amPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

21h 39m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,424LATAM Airlines

Sun, Jan 31 - Thu, Feb 4

6:00 am - 4:50 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

29h 50m2 stops Atlanta Hartsfield-Jackson Santiago Arturo Merino Benitez

7:30 am - 12:09 amPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

21h 39m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,424LATAM Airlines

Sun, Jan 31 - Thu, Feb 4

7:50 am - 4:50 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

28h 00m2 stops Atlanta Hartsfield-Jackson Santiago Arturo Merino Benitez

9:15 am - 12:23 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

32h 08m2 stops Sao Paulo Guarulhos Intl Atlanta Hartsfield-Jackson

$1,427LATAM Airlines

Sun, Jan 31 - Thu, Feb 4

8:08 am - 4:30 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

27h 22m2 stops Washington, D.C. Dulles Intl Sao Paulo Guarulhos Intl

3:45 pm - 9:59 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

35h 14m3 stops Sao Paulo Guarulhos Intl Washington, D.C. Dulles Intl Los Angeles

$1,434United Airlines

Sat, Dec 5 - Sat, Dec 12

9:15 pm - 9:30 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

43h 15m3 stops Los Angeles Lima J Chavez Intl Sao Paulo Guarulhos Intl

7:30 am - 11:01 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

20h 31m2 stops Lima J Chavez Intl Los Angeles

$1,504Multiple Airlines

Sat, Dec 19 - Fri, Jan 1

12:26 pm - 5:40 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

24h 14m2 stops Dallas/Fort Worth Rio de Janeiro–Galeão Intl

7:40 pm - 11:57 amPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

21h 17m2 stops Sao Paulo Guarulhos Intl Miami

$3,118GOL

Useful Info

Cheapest flight	$1,260

Flight from Seattle to Porto Alegre

How does KAYAK find such low prices on flights from Washington to Porto Alegre?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Porto Alegre.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Porto Alegre?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto Alegre from Washington is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Washington to Porto Alegre?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto Alegre with an airline and back to Washington with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Porto Alegre?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto Alegre from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.