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.

$1,053 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

One-way

Recent round-trip flight deals from Washington to Porto Alegre

Sat, Nov 7 - Mon, Nov 16

11:50 am - 12:20 amSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

31h 30m2 stops New York John F Kennedy Intl Sao Paulo Guarulhos Intl

5:40 pm - 2:30 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

25h 50m2 stops Santiago Arturo Merino Benitez New York John F Kennedy Intl

$1,070LATAM 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

$1,192LATAM Airlines

Sun, Jan 31 - Thu, Feb 4

6:00 am - 5:15 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

30h 15m2 stops Atlanta Hartsfield-Jackson Sao Paulo Guarulhos 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

$1,218LATAM Airlines

Sun, Jan 31 - Thu, Feb 4

6:00 am - 5:15 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

30h 15m2 stops Atlanta Hartsfield-Jackson Sao Paulo Guarulhos Intl

6:00 pm - 7:23 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

30h 23m2 stops Rio de Janeiro–Galeão Intl New York John F Kennedy Intl

$1,220LATAM Airlines

Sun, Jan 31 - Thu, Feb 4

7:15 am - 5:15 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

29h 00m2 stops New York John F Kennedy Intl Sao Paulo Guarulhos Intl

6:00 pm - 6:59 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

29h 59m2 stops Rio de Janeiro–Galeão Intl Atlanta Hartsfield-Jackson

$1,220LATAM Airlines

Sat, Oct 24 - Sat, Oct 31

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

30h 50m2 stops Atlanta Hartsfield-Jackson Santiago Arturo Merino Benitez

5:40 pm - 1:40 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

24h 00m2 stops Santiago Arturo Merino Benitez Los Angeles Los Angeles

$1,233LATAM Airlines

Sat, Nov 7 - Mon, Nov 16

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

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

5:40 pm - 2:30 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

25h 50m2 stops Santiago Arturo Merino Benitez New York John F Kennedy Intl

$1,233LATAM Airlines

Fri, Sep 25 - Mon, Sep 28

8:00 am - 1:00 amSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

37h 00m2 stops Miami Sao Paulo Guarulhos Intl

7:05 pm - 9:55 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

30h 50m2 stops Santiago Arturo Merino Benitez Miami

$1,243Multiple Airlines

Wed, Oct 28 - Wed, Nov 4

11:58 am - 3:00 pmPDX Portland-POA Porto Alegre Salgado Filho

23h 02m2 stops Dallas/Fort Worth Sao Paulo Guarulhos Intl

5:30 pm - 11:59 pmPOA Porto Alegre Salgado Filho-PDX Portland

35h 29m2 stops Brasilia Miami

$1,734GOL

Mon, Dec 21 - Thu, Dec 31

9:28 pm - 11:40 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

45h 12m2 stops Miami Brasilia

5:30 pm - 11:51 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

35h 21m2 stops Brasilia Miami

$2,214GOL

Useful Info

Cheapest flight	$1,053

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.