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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

$784 CHEAP FLIGHTS from Washington to Porto Alegre

POA

KAYAK searches hundreds of travel sites at once for deals on flights to Porto Alegre

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$784

Azul

Wed 4/8Thu 4/23

SEA - POA • 2 stops

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Porto Alegre!

Flight Deals

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, Apr 8 - Thu, Apr 23

6:20 am - 6:20 pm

SEA

POA

32h 00m

2 stops

3:25 pm - 7:42 pm

POA

SEA

32h 17m

2 stops

$784Azul

Thu, Apr 30 - Tue, May 5

11:14 pm - 4:10 pm

SEA

POA

36h 56m

2 stops

5:10 pm - 2:36 pm

POA

SEA

25h 26m

2 stops

$802Azul

Thu, Apr 30 - Tue, May 5

11:48 pm - 4:10 pm

SEA

POA

36h 22m

2 stops

5:10 pm - 2:36 pm

POA

SEA

25h 26m

3 stops

$852United Airlines

Sun, Feb 22 - Wed, Mar 25

6:15 am - 1:00 pm

SEA

POA

25h 45m

2 stops

8:10 pm - 10:22 pm

POA

SEA

30h 12m

2 stops

$915Multiple Airlines

Wed, Apr 8 - Thu, Apr 23

11:35 am - 9:55 am

SEA

POA

66h 20m

3 stops

3:25 pm - 7:00 pm

POA

SEA

31h 35m

2 stops

$961United Airlines

Fri, Apr 3 - Sat, Apr 25

1:54 pm - 6:40 pm

SEA

POA

24h 46m

2 stops

5:20 am - 11:44 pm

POA

SEA

22h 24m

2 stops

$1,068GOL

Wed, Apr 8 - Thu, Apr 23

10:20 am - 6:20 pm

SEA

POA

28h 00m

3 stops

1:20 pm - 10:50 pm

POA

SEA

37h 30m

3 stops

$1,080Air Canada

Mon, Jul 20 - Sun, Aug 2

11:15 pm - 1:00 pm

SEA

POA

33h 45m

2 stops

4:15 pm - 9:59 pm

POA

SEA

33h 44m

2 stops

$1,089LATAM Airlines

Tue, Mar 17 - Thu, Mar 19

8:00 am - 4:30 pm

SEA

POA

28h 30m

2 stops

2:05 pm - 10:16 pm

POA

SEA

36h 11m

2 stops

$1,183Air Canada

Sat, Feb 21 - Sun, Mar 22

8:05 am - 5:05 pm

SEA

POA

28h 00m

2 stops

5:50 pm - 11:57 pm

POA

SEA

34h 07m

2 stops

$1,185LATAM Airlines

Useful Info

Cheapest flight	$784

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.

Everything you need to know for your flight to Porto Alegre

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Porto Alegre

Porto Alegre (POA)

POA

$784 Find Cheap Flights from Washington to Porto Alegre

KAYAK searches hundreds of travel sites at once for deals on flights to Porto Alegre

Everything you should know

Cheap Flights from Washington to Porto Alegre

Recent round-trip flight deals from Washington to Porto Alegre

Good to know

FAQs for booking flights from Washington 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.

Everything you need to know for your flight to Porto Alegre

Information on the airport you'll fly into in Porto Alegre

Cabin class types available on flights to Washington

Complete your trip to Porto Alegre with a hotel stay or car rental

Find direct flights for Porto Alegre

Flights to other popular destinations

Flights from domestic origins to Porto Alegre

Choose which airport to fly into in Porto Alegre

Find deals for your return flight