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$530+ Cheap flights from Porto Alegre (POA) to Seattle (SEA)

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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
POA — SEA
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Porto Alegre to Seattle

Cheapest flights from Porto Alegre to Seattle
Explore the most affordable flight options available from Porto Alegre to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/26. 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 2/262:05 pm
POA
-
SEA
2 stops26h 44m
United Airlines
Mon 3/26:45 am
SEA
-
POA
2 stops26h 25m
United Airlines
Deal found 1/26$530
This United Airlines deal was found by Cheapflights users on 1/26. 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 2/103:25 pm
POA
-
SEA
2 stops25h 07m
United Airlines
Wed 2/252:20 pm
SEA
-
POA
2 stops43h 00m
United Airlines
Deal found 1/26$531
This United Airlines deal was found by Cheapflights users on 1/27. 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 8/45:10 pm
POA
-
SEA
3 stops33h 08m
United Airlines
Sat 9/55:00 pm
SEA
-
POA
2 stops43h 20m
United Airlines
Deal found 1/27$638
This KAYAK deal was found by Cheapflights users on 1/26. 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.
Sat 10/173:45 pm
POA
-
SEA
2 stops23h 55m
Azul
Sun 11/17:03 am
SEA
-
POA
2 stops26h 17m
Azul
Deal found 1/26$762
This United Airlines deal was found by Cheapflights users on 1/27. 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 9/102:05 pm
POA
-
SEA
2 stops34h 05m
United Airlines
Fri 9/2510:10 pm
SEA
-
POA
2 stops37h 15m
United Airlines
Deal found 1/27$766
This Copa Airlines deal was found by Cheapflights users on 1/27. 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 5/71:20 am
POA
-
SEA
2 stops22h 28m
Copa Airlines
Wed 5/205:25 pm
SEA
-
POA
2 stops26h 55m
Copa Airlines
Deal found 1/27$871
This Copa Airlines deal was found by Cheapflights users on 1/28. 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 5/71:20 am
POA
-
SEA
2 stops22h 28m
Copa Airlines
Sun 5/245:00 pm
SEA
-
POA
2 stops27h 20m
Copa Airlines
Deal found 1/28$926
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Fri 5/85:10 pm
POA
-
SEA
2 stops31h 43m
United Airlines
Sun 5/2410:50 am
SEA
-
POA
3 stops49h 30m
United Airlines
Deal found 1/28$1,049

Find flight deals from Porto Alegre to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Porto Alegre (POA) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 29, 2026.

Round-trip from

$530
(United Airlines)

Popular in

July

Cheapest in

June

Average price

$771
From Porto Alegre Salgado Filho to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($44 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto Alegre to Seattle 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 January 29, 2026.
Use the filters below to find and compare flights from Porto Alegre to Seattle that are best for you.

Fly from

Porto Alegre

Fly to

Seattle

Route

Depart

Return

Price

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 2/26

3:45 pm-7:03 pm

2 stops32h 18m

Seattle/Tacoma Intl

Mon 3/2

7:00 am-2:10 pm

3 stops26h 10m

$530

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Tue 2/10

6:10 pm-4:01 pm

3 stops26h 51m

Seattle/Tacoma Intl

Wed 2/25

2:20 pm-2:20 pm

2 stops43h 00m

$531

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 5/7

1:20 am-7:48 pm

2 stops22h 28m

Seattle/Tacoma Intl

Wed 5/20

5:25 pm-12:20 am

2 stops26h 55m

$871

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 5/7

1:20 am-7:48 pm

2 stops22h 28m

Seattle/Tacoma Intl

Sun 5/24

5:00 pm-12:20 am

2 stops27h 20m

$926

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Best time to book a flight from Porto Alegre to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Porto Alegre 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.

Related info for your journey

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

  • How long is the flight from Porto Alegre to Seattle?

    United Airlines can get you from Porto Alegre to Seattle in just under 32h 18m. Your travel time can differ by up to . There are 6926 mi between Porto Alegre and Seattle.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Porto Alegre to Seattle 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
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Lacey
Edmonds
Renton
Puyallup
Kirkland
Kent
Tukwila
Fife
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Marysville
Centralia
Federal Way
Chehalis

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Alternative routes for Porto Alegre to Seattle

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