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.

$602 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

Thu, Dec 31 - Wed, Feb 3

5:52 pm - 9:30 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

22h 38m2 stops Calgary Sao Paulo Guarulhos Intl

12:40 pm - 8:52 amPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

25h 12m2 stops Sao Paulo Congonhas Calgary

$1,141Multiple Airlines

Thu, Dec 3 - Wed, Dec 9

1:16 pm - 12:25 amSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

30h 09m2 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

$1,272Copa Airlines

Sun, Nov 29 - Sun, Dec 6

8:40 am - 12:55 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

23h 15m3 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl Sao Paulo Guarulhos Intl

2:40 pm - 2:37 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

28h 57m3 stops Sao Paulo Guarulhos Intl Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$1,274Multiple Airlines

Tue, Dec 29 - Wed, Feb 3

7:15 am - 4:50 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

28h 35m2 stops Los Angeles Santiago Arturo Merino Benitez

5:40 pm - 2:37 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

25h 57m2 stops Santiago Arturo Merino Benitez Los Angeles

$1,293LATAM Airlines

Thu, Dec 31 - Wed, Feb 3

2:30 pm - 12:15 amSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

28h 45m2 stops Calgary Sao Paulo Guarulhos Intl

1:35 pm - 2:37 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

30h 02m3 stops Sao Paulo Guarulhos Intl Calgary Vancouver Intl

$1,303Multiple Airlines

Thu, Dec 31 - Wed, Feb 3

8:40 am - 12:55 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

23h 15m3 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl Sao Paulo Guarulhos Intl

5:10 pm - 2:37 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

26h 27m3 stops Sao Paulo Guarulhos Intl Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$1,312Multiple Airlines

Tue, Dec 29 - Wed, Feb 3

8:40 am - 12:55 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

23h 15m3 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl Sao Paulo Guarulhos Intl

5:10 pm - 2:37 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

26h 27m3 stops Sao Paulo Guarulhos Intl Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$1,314Multiple Airlines

Tue, Dec 29 - Wed, Feb 3

8:40 am - 4:30 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

26h 50m3 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl Sao Paulo Guarulhos Intl

5:25 pm - 8:59 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

32h 34m2 stops Rio de Janeiro–Galeão Intl Toronto Pearson Intl

$1,320Multiple Airlines

Sat, Dec 19 - Sat, Jan 2

9:23 pm - 3:00 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

36h 37m2 stops Miami Sao Paulo Guarulhos Intl

7:45 pm - 11:57 amPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

21h 12m2 stops Sao Paulo Guarulhos Intl Miami

$3,199GOL

Thu, Dec 31 - Wed, Feb 3

1:02 pm - 3:00 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

20h 58m2 stops Miami Sao Paulo Guarulhos Intl

6:40 pm - 1:25 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

23h 45m2 stops Rio de Janeiro–Galeão Intl Dallas/Fort Worth

$5,114GOL

Cheapest flight	$602

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.