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.

$562 CHEAP FLIGHTS from Washington to Porto Alegre

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Cheap Flights from Washington to Porto Alegre

Cheap flights from Washington to Porto Alegre with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Round-trip

One-way

Mon, Nov 30 - Mon, Dec 14

9:20 pm - 6:40 amSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

52h 20m2 stops Los Angeles Lima J Chavez Intl

5:40 pm - 2:34 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

25h 54m2 stops Santiago Arturo Merino Benitez New York John F Kennedy Intl

$1,285Delta

Sun, Feb 21 - Sun, Mar 14

2:20 pm - 12:55 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

41h 35m2 stops Chicago O'Hare Intl Sao Paulo Guarulhos Intl

4:05 pm - 9:56 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

33h 51m3 stops Sao Paulo Guarulhos Intl Washington, D.C. Dulles Intl Los Angeles

$1,349United Airlines

Sun, Feb 21 - Sun, Mar 14

2:20 pm - 12:55 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

41h 35m2 stops Chicago O'Hare Intl Sao Paulo Guarulhos Intl

4:05 pm - 9:05 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

33h 00m2 stops Sao Paulo Guarulhos Intl Newark

$1,349United Airlines

Mon, Nov 9 - Mon, Nov 16

10:56 pm - 6:25 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

38h 29m2 stops Chicago O'Hare Intl Sao Paulo Guarulhos Intl

3:30 pm - 7:17 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

32h 47m2 stops Rio de Janeiro–Galeão Intl Houston George Bush Intcntl

$1,349United Airlines

Mon, Nov 9 - Mon, Nov 16

10:56 pm - 4:30 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

36h 34m2 stops Chicago O'Hare Intl Sao Paulo Guarulhos Intl

3:30 pm - 2:39 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

28h 09m3 stops Rio de Janeiro–Galeão Intl Houston George Bush Intcntl San Francisco

$1,349United Airlines

Mon, Nov 30 - Mon, Dec 14

2:15 pm - 12:10 amSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

28h 55m3 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

$1,354Multiple Airlines

Sun, Feb 21 - Sun, Mar 14

7:32 pm - 6:25 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

41h 53m3 stops San Francisco Houston George Bush Intcntl Sao Paulo Guarulhos Intl

4:05 pm - 9:56 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

33h 51m3 stops Sao Paulo Guarulhos Intl Washington, D.C. Dulles Intl Los Angeles

$1,358United Airlines

Sun, Jan 31 - Thu, Feb 4

9:20 pm - 6:40 amSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

28h 20m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

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

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

$1,374LATAM Airlines

Sun, Dec 20 - Wed, Dec 30

1:02 pm - 11:50 amSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

41h 48m2 stops Miami Brasilia

5:20 am - 12:02 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

35h 42m2 stops Brasilia Miami

$2,163GOL

Sat, Dec 19 - Tue, Dec 29

9:23 pm - 11:40 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

45h 17m2 stops Miami Brasilia

5:20 am - 11:57 amPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

35h 37m2 stops Brasilia Miami

$2,163GOL

Cheapest flight	$562

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.