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.

$506 CHEAP FLIGHTS from Washington to Porto Alegre

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

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

Fri, Nov 13 - Tue, Dec 1

7:45 am - 4:30 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

27h 45m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Sao Paulo Guarulhos Intl

2:00 pm - 8:59 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

35h 59m2 stops Sao Paulo Guarulhos Intl Toronto Pearson Intl

$1,197Air Canada

Thu, Nov 12 - Wed, Nov 18

6:00 am - 12:25 amSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

37h 25m2 stops Los Angeles Panama City Tocumen Intl

1:30 am - 7:37 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

23h 07m2 stops Panama City Tocumen Intl Los Angeles

$1,306Copa Airlines

Sun, Nov 22 - Mon, Dec 7

5:23 pm - 12:25 amSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

26h 02m2 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

$1,338Copa Airlines

Sat, Nov 14 - Fri, Nov 20

7:58 pm - 12:25 amSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

23h 27m2 stops Los Angeles Panama City Tocumen Intl

1:30 am - 9:50 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

25h 20m2 stops Panama City Tocumen Intl Los Angeles

$1,351Multiple 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

$1,353LATAM Airlines

Fri, Nov 13 - Tue, Dec 1

8:10 am - 3:20 pmSEA Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho

26h 10m2 stops Miami Sao Paulo Guarulhos Intl

7:30 am - 11:55 pmPOA Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl

21h 25m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,360LATAM Airlines

Useful Info

Cheapest flight	$506

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.