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>

$789 CHEAP FLIGHTS from Washington to Porto Alegre

POA

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

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Cheapest round-trip

$789

United Airlines

Sat 3/14Wed 3/18

SEA - POA • 2 stops

Cheapest one-way

$2,118

Multiple Airlines

Sun 12/14

SEA - POA • 3 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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington to Porto Alegre that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

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, Mar 14 - Wed, Mar 18

11:59 pm - 4:20 pm

SEA

POA

36h 21m2 stops

5:10 pm - 7:03 pm

POA

SEA

29h 53m2 stops

$789United Airlines

Wed, Jan 21 - Wed, Jan 28

10:50 am - 4:30 pm

SEA

POA

24h 40m2 stops

5:55 pm - 7:18 pm

POA

SEA

30h 23m2 stops

$838American Airlines

Wed, Jan 21 - Wed, Jan 28

8:10 am - 10:40 am

SEA

POA

45h 30m2 stops

2:10 pm - 10:43 pm

POA

SEA

37h 33m3 stops

$893United Airlines

Wed, Jan 21 - Wed, Jan 28

12:35 pm - 10:40 am

SEA

POA

41h 05m3 stops

3:25 pm - 4:01 pm

POA

SEA

29h 36m3 stops

$913United Airlines

Sat, Mar 14 - Wed, Mar 18

8:59 am - 10:35 am

SEA

POA

21h 36m3 stops

3:25 pm - 7:03 pm

POA

SEA

31h 38m2 stops

$1,093United Airlines

Wed, Apr 29 - Sun, May 3

6:53 am - 1:10 pm

PDX

POA

26h 17m2 stops

11:15 am - 6:05 pm

POA

PDX

34h 50m2 stops

$1,407United Airlines

Sun, Jan 4 - Sun, Jan 11

10:20 am - 1:00 pm

SEA

POA

21h 40m2 stops

9:10 pm - 11:01 am

POA

SEA

42h 51m2 stops

$1,592GOL

Sat, Mar 14 - Wed, Mar 18

8:59 am - 3:25 pm

SEA

POA

26h 26m3 stops

3:25 pm - 8:58 pm

POA

SEA

33h 33m3 stops

$1,623United Airlines

Thu, Dec 18 - Fri, Jan 2

9:06 am - 12:30 am

SEA

POA

34h 24m2 stops

1:45 am - 11:57 pm

POA

SEA

27h 12m2 stops

$2,418Copa Airlines

Sat, Dec 20 - Sat, Jan 3

10:06 pm - 1:00 pm

SEA

POA

33h 54m2 stops

5:10 am - 11:42 pm

POA

SEA

23h 32m2 stops

$2,653GOL

Useful Info

Cheapest flight	$789

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

$789 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

Recent one-way 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