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Porto Alegre

$802+ 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — POA
Mar 4 — Mar 111
Wed 3/4
Wed 3/11
1 adult, Economy
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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 February 2, 2026.

This Ovago deal was found by Cheapflights users on 1/31. 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.
Thu 4/3011:14 pm
SEA
-
POA
2 stops36h 56m
Azul
Tue 5/55:10 pm
POA
-
SEA
2 stops25h 26m
Azul
Deal found 1/31$802
This United Airlines deal was found by Cheapflights users on 1/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:48 pm
SEA
-
POA
2 stops36h 22m
United Airlines
Tue 5/55:10 pm
POA
-
SEA
3 stops25h 26m
United Airlines
Deal found 1/31$852
This FlightHub deal was found by Cheapflights users on 2/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2011:15 pm
SEA
-
POA
2 stops33h 45m
LATAM Airlines
Sun 8/24:15 pm
POA
-
SEA
2 stops33h 44m
LATAM Airlines
Deal found 2/1$1,089
This Air Canada deal was found by Cheapflights users on 2/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/178:00 am
SEA
-
POA
2 stops28h 30m
Air Canada
Thu 3/192:05 pm
POA
-
SEA
2 stops36h 11m
Air Canada
Deal found 2/1$1,183
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/27:00 am
PDX
-
POA
2 stops28h 20m
United Airlines
Mon 4/63:25 pm
POA
-
PDX
2 stops35h 04m
United Airlines
Deal found 2/1$1,360
This Gotogate deal was found by Cheapflights users on 1/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3010:20 am
SEA
-
POA
3 stops25h 15m
Air Canada
Tue 5/52:00 pm
POA
-
SEA
3 stops28h 20m
Air Canada
Deal found 1/31$1,433
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/177:00 am
SEA
-
POA
2 stops27h 25m
United Airlines
Thu 3/192:05 pm
POA
-
SEA
3 stops34h 53m
United Airlines
Deal found 2/1$1,680
This Mytrip deal was found by Cheapflights users on 2/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:35 pm
SEA
-
POA
3 stops34h 10m
Multiple Airlines
Sun 8/211:15 am
POA
-
SEA
2 stops27h 22m
Multiple Airlines
Deal found 2/1$1,981
This Gotogate deal was found by Cheapflights users on 2/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/48:00 am
SEA
-
POA
2 stops28h 30m
Multiple Airlines
Sat 4/114:55 pm
POA
-
SEA
3 stops26h 08m
Multiple Airlines
Deal found 2/1$2,727
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:05 am
SEA
-
POA
3 stops27h 00m
United Airlines
Sun 8/24:05 pm
POA
-
SEA
3 stops31h 07m
United Airlines
Deal found 2/1$2,770
This Mytrip deal was found by Cheapflights users on 2/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/45:50 am
SEA
-
POA
3 stops29h 30m
Air Canada
Sat 4/114:55 pm
POA
-
SEA
3 stops26h 08m
Air Canada
Deal found 2/1$3,034

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 February 2, 2026.

Most accurate provider

Ovago
2 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$802
(Ovago)
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 February 2, 2026.
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

Thu 4/30

11:14 pm-4:10 pm

2 stops36h 56m

Porto Alegre Salgado Filho

Tue 5/5

5:10 pm-2:36 pm

2 stops25h 26m

$802

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Thu 4/30

11:48 pm-4:10 pm

2 stops36h 22m

Porto Alegre Salgado Filho

Tue 5/5

5:10 pm-2:36 pm

3 stops25h 26m

$852

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Mon 7/20

11:15 pm-1:00 pm

2 stops33h 45m

Porto Alegre Salgado Filho

Sun 8/2

4:15 pm-9:59 pm

2 stops33h 44m

$1,089

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Tue 3/17

8:00 am-4:30 pm

2 stops28h 30m

Porto Alegre Salgado Filho

Thu 3/19

2:05 pm-10:16 pm

2 stops36h 11m

$1,183

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Thu 4/2

2:10 pm-6:20 pm

2 stops24h 10m

Porto Alegre Salgado Filho

Mon 4/6

3:25 pm-10:29 pm

2 stops35h 04m

$1,360

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Thu 4/30

10:20 am-3:35 pm

3 stops25h 15m

Porto Alegre Salgado Filho

Tue 5/5

2:00 pm-2:20 pm

3 stops28h 20m

$1,433

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Tue 3/17

8:00 am-2:25 pm

3 stops26h 25m

Porto Alegre Salgado Filho

Thu 3/19

3:30 pm-1:07 pm

2 stops25h 37m

$1,680

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Mon 3/2

9:14 pm-2:25 pm

3 stops36h 11m

$1,768

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/31

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 Azul, United Airlines, and LATAM Airlines fly from State of Washington to Porto Alegre in about 33h 45m. The time it takes to get you to your destination can typically vary by up to 3h 11m. Airlines will cover a distance of 6926 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

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Alternative routes for Washington to Porto Alegre

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