HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto Alegre

$738+ Cheap flights from Washington to Porto Alegre (POA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — POA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Porto Alegre with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Washington to Porto Alegre

Cheapest flights from Washington to Porto Alegre
Explore the most affordable flight options available from Washington to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This American Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:39 pmPDX - POA
2 stops30h 16mAmerican Airlines
Tue 1/66:25 pmPOA - PDX
2 stops23h 56mAmerican Airlines
Deal found 12/17$1,970
This Ovago deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2012:43 pmSEA - POA
2 stops43h 17mGOL
Sat 1/35:20 pmPOA - SEA
2 stops23h 10mGOL
Deal found 12/17$2,522
This Copa Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:05 pmSEA - POA
2 stops26h 25mCopa Airlines
Fri 1/21:45 amPOA - SEA
2 stops27h 12mCopa Airlines
Deal found 12/16$2,588
This KAYAK deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/189:00 amSEA - POA
2 stops27h 00mLATAM Airlines
Sat 1/37:45 amPOA - SEA
2 stops20h 40mLATAM Airlines
Deal found 12/16$2,752
This Copa Airlines deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:54 pmSEA - POA
2 stops25h 36mCopa Airlines
Fri 1/21:45 amPOA - SEA
2 stops27h 12mCopa Airlines
Deal found 12/18$2,988

Find flight deals from Washington to Porto Alegre

Keep the following information in mind while searching for Washington to Porto Alegre flight deals. Data was last updated December 18, 2025.

Most accurate provider

Ovago
2 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$738
(United Airlines)
Provider with most accurate pricing for Seattle/Tacoma Intl-Porto Alegre Salgado Filho flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Porto Alegre Salgado Filho flights.
Search Deals
From Washington to Porto Alegre Salgado Filho
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Porto Alegre that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Washington to Porto Alegre that are best for you.

Fly from

Washington

Fly to

Porto Alegre

Route

Depart

Return

Price

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Sat 3/14

11:59 pm-2:20 pm

2 stops34h 21m

Porto Alegre Salgado Filho

Wed 3/18

5:10 pm-10:45 pm

2 stops33h 35m

$738

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Mon 1/26

7:00 am-2:40 pm

2 stops26h 40m

Porto Alegre Salgado Filho

Mon 2/9

6:10 pm-6:14 pm

2 stops29h 04m

$812

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Tue 1/27

2:10 pm-6:20 pm

2 stops47h 10m

Porto Alegre Salgado Filho

Thu 2/5

2:05 pm-8:57 pm

2 stops35h 52m

$825

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Sat 1/24

9:59 pm-5:00 pm

2 stops38h 01m

Porto Alegre Salgado Filho

Sat 2/7

7:45 am-10:07 am

2 stops31h 22m

$949

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Sat 1/24

12:40 pm-6:20 pm

3 stops48h 40m

Porto Alegre Salgado Filho

Sat 2/7

3:15 pm-4:01 pm

2 stops29h 46m

$1,029

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Sat 4/4

7:00 am-5:00 pm

2 stops30h 00m

Porto Alegre Salgado Filho

Sat 4/18

9:55 pm-7:02 pm

2 stops49h 07m

$1,257

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Sat 4/4

9:50 am-8:10 pm

3 stops30h 20m

Porto Alegre Salgado Filho

Sat 4/18

11:45 am-2:40 pm

3 stops30h 55m

$1,263

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Sat 2/7

7:00 am-2:45 pm

2 stops26h 45m

Porto Alegre Salgado Filho

Sun 2/15

3:20 pm-11:55 am

2 stops25h 35m

$1,287

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Fri 1/30

12:35 pm-3:40 pm

2 stops22h 05m

Porto Alegre Salgado Filho

Fri 2/6

5:55 pm-1:17 pm

2 stops24h 22m

$1,317

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Fri 1/30

11:59 pm-2:45 pm

2 stops33h 46m

Porto Alegre Salgado Filho

Fri 2/6

6:15 pm-6:55 pm

3 stops29h 40m

$1,317

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 12 results
1
2

Best time to book a flight from Washington to Porto Alegre

Have a flexible travel schedule? Discover the best time to fly to Porto Alegre from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Porto Alegre
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Washington to Porto Alegre. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Porto Alegre from Washington?

    Porto Alegre Salgado Filho (POA) is the airport you will fly into if you book a flight from Washington to Porto Alegre. It is only a 4.0 mi journey from Salgado Filho (POA) to Porto Alegre’s city center.

  • How long is the flight from State of Washington to Porto Alegre?

    Airlines like United Airlines and LATAM Airlines fly from State of Washington to Porto Alegre in about 30h. The time it takes to get you to your destination can typically vary by up to 4h 21m. Airlines will cover a distance of 6866 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Washington to Porto Alegre that include hotel bookings?

    Yes. In addition to deals on Washington to Porto Alegre flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Porto Alegre?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Porto Alegre.

  • Can I find deals for business class flights from Washington to Porto Alegre?

    Yes. Cheapflights offers flight deals from Washington to Porto Alegre by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Porto Alegre

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Porto Alegre flights
LaGuardia to Porto Alegre flights
Newark to Porto Alegre flights
Miami to Porto Alegre flights
Seattle to Porto Alegre flights
Hobby to Porto Alegre flights
Dulles Intl to Porto Alegre flights
Los Angeles to Porto Alegre flights
Boston to Porto Alegre flights
San Diego to Porto Alegre flights
Atlanta to Porto Alegre flights
Fort Lauderdale to Porto Alegre flights
George Bush Intcntl to Porto Alegre flights
Orlando to Porto Alegre flights
Raleigh to Porto Alegre flights
San Francisco to Porto Alegre flights
Austin to Porto Alegre flights
O'Hare Intl to Porto Alegre flights
Dallas/Fort Worth to Porto Alegre flights
Portland to Porto Alegre flights
Detroit to Porto Alegre flights
Ontario to Porto Alegre flights
San Antonio to Porto Alegre flights
Philadelphia to Porto Alegre flights
Tulsa to Porto Alegre flights
St. Louis to Porto Alegre flights
Las Vegas to Porto Alegre flights
Sacramento to Porto Alegre flights
Nashville to Porto Alegre flights
Chattanooga to Porto Alegre flights
San Jose to Porto Alegre flights
Santa Ana to Porto Alegre flights
Dulles Intl to Santa Maria flights
Newark to Caxias do Sul flights
San Francisco to Santa Maria flights
Oakland to Porto Alegre flights
New Orleans to Porto Alegre flights
Memphis to Porto Alegre flights
Birmingham to Porto Alegre flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.