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$606+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
POA — SEA
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Porto Alegre to Seattle

Best flights from Porto Alegre to Seattle
Discover carefully curated flight deals from Porto Alegre to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/11. 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.
Wed 3/185:10 pmPOA - SEA
2 stops33h 35mUnited Airlines
Sun 3/227:00 amSEA - POA
2 stops27h 20mUnited Airlines
Deal found 12/11$606
This LATAM Airlines deal was found by Cheapflights users on 12/11. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/810:05 amPOA - SEA
2 stops37h 28mLATAM Airlines
Sun 5/2411:15 amSEA - POA
2 stops28h 00mLATAM Airlines
Deal found 12/11$909
This Copa Airlines deal was found by Cheapflights users on 12/11. 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 amPOA - SEA
2 stops22h 25mCopa Airlines
Sun 5/245:00 pmSEA - POA
2 stops27h 20mCopa Airlines
Deal found 12/11$972
This Booking.com deal was found by Cheapflights users on 12/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/182:05 pmPOA - SEA
3 stops28h 56mMultiple Airlines
Mon 3/308:00 amSEA - POA
2 stops28h 05mMultiple Airlines
Deal found 12/11$973
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Wed 3/185:10 pmPOA - SEA
2 stops33h 35mUnited Airlines
Tue 3/316:45 amSEA - POA
2 stops27h 35mUnited Airlines
Deal found 12/11$610
This United Airlines deal was found by Cheapflights users on 12/10. 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 1/222:00 pmPOA - SEA
2 stops31h 01mUnited Airlines
Mon 3/211:59 pmSEA - POA
2 stops33h 21mUnited Airlines
Deal found 12/10$610

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 December 12, 2025.

Round-trip from

$606
(United Airlines)

Popular in

July

Cheapest in

June

Average price

$1,161
From Porto Alegre Salgado Filho to Seattle/Tacoma Intl
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High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 12, 2025.
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

Wed 3/18

5:10 pm-10:45 pm

2 stops33h 35m

Seattle/Tacoma Intl

Sun 3/22

7:00 am-2:20 pm

2 stops27h 20m

$606

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Wed 3/18

5:10 pm-10:45 pm

2 stops33h 35m

Seattle/Tacoma Intl

Tue 3/31

6:45 am-2:20 pm

2 stops27h 35m

$610

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 1/22

2:00 pm-4:01 pm

2 stops31h 01m

Seattle/Tacoma Intl

Mon 3/2

11:59 pm-2:20 pm

2 stops33h 21m

$610

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Fri 5/8

10:05 am-7:33 pm

2 stops37h 28m

Seattle/Tacoma Intl

Sun 5/24

11:15 am-7:15 pm

2 stops28h 00m

$909

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 5/7

1:20 am-7:45 pm

2 stops22h 25m

Seattle/Tacoma Intl

Sun 5/24

5:00 pm-12:20 am

2 stops27h 20m

$972

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Wed 3/18

2:05 pm-3:01 pm

3 stops28h 56m

Seattle/Tacoma Intl

Mon 3/30

8:00 am-4:05 pm

2 stops28h 05m

$973

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Tue 12/23

1:35 am-9:00 pm

2 stops24h 25m

$1,534

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Mon 12/29

6:00 pm-8:58 pm

3 stops55h 58m

$1,628

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Sun 12/28

6:00 pm-9:02 am

3 stops44h 02m

$2,087

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 12/25

1:35 am-10:14 am

2 stops37h 39m

$2,208

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 13 results
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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 33h 35m. 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?

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Tukwila
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