HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$651+ 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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
POA — SEA
Apr 12 — Apr 191
Sun 4/12
Sun 4/19
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Porto Alegre to Seattle 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 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 March 13, 2026.

This United Airlines deal was found by Cheapflights users on 3/12. 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 3/135:10 pm
POA
-
SEA
2 stops33h 35m
United Airlines
Tue 3/178:00 am
SEA
-
POA
2 stops26h 25m
United Airlines
Deal found 3/12$651
This United Airlines deal was found by Cheapflights users on 3/8. 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 3/183:25 pm
POA
-
SEA
2 stops24h 24m
United Airlines
Mon 4/62:39 pm
SEA
-
POA
2 stops19h 11m
United Airlines
Deal found 3/8$844
This United Airlines deal was found by Cheapflights users on 3/8. 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 9/143:25 pm
POA
-
SEA
3 stops26h 57m
United Airlines
Thu 10/110:10 pm
SEA
-
POA
2 stops38h 00m
United Airlines
Deal found 3/8$925
This Delta deal was found by Cheapflights users on 3/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/188:10 pm
POA
-
SEA
2 stops21h 47m
Delta
Tue 4/1411:15 pm
SEA
-
POA
2 stops27h 00m
Delta
Deal found 3/9$945
This LATAM Airlines deal was found by Cheapflights users on 3/8. 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.
Thu 10/297:25 am
POA
-
SEA
2 stops31h 01m
LATAM Airlines
Sun 11/18:25 am
SEA
-
POA
2 stops28h 50m
LATAM Airlines
Deal found 3/8$952
This LATAM Airlines deal was found by Cheapflights users on 3/9. 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.
Thu 3/195:55 pm
POA
-
SEA
2 stops29h 53m
LATAM Airlines
Mon 4/611:45 am
SEA
-
POA
2 stops26h 30m
LATAM Airlines
Deal found 3/9$954
This LATAM Airlines deal was found by Cheapflights users on 3/9. 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.
Thu 9/107:25 am
POA
-
SEA
2 stops30h 40m
LATAM Airlines
Fri 9/258:25 am
SEA
-
POA
2 stops22h 50m
LATAM Airlines
Deal found 3/9$958
This LATAM Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 8/48:05 pm
POA
-
SEA
2 stops29h 54m
LATAM Airlines
Sat 9/510:00 pm
SEA
-
POA
2 stops22h 40m
LATAM Airlines
Deal found 3/9$961

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 March 13, 2026.

Round-trip from

$961
(LATAM Airlines)

Popular in

July

Cheapest in

February

Average price

$656
From Porto Alegre Salgado Filho to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($175 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 13, 2026.
Use the filters below to find and compare flights from Porto Alegre to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Sun 7/12

1:15 am-9:59 pm

2 stops24h 44m

Seattle/Tacoma Intl

Tue 7/21

7:05 pm-12:15 am

2 stops25h 10m

$1,091

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Sun 5/3

1:20 am-7:48 pm

2 stops22h 28m

Seattle/Tacoma Intl

Tue 5/26

5:20 pm-12:20 am

2 stops27h 00m

$1,104

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Fri 5/8

1:20 am-7:48 pm

2 stops22h 28m

Seattle/Tacoma Intl

Sat 5/23

3:30 pm-12:20 am

2 stops28h 50m

$1,104

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 5/7

1:20 am-9:58 pm

2 stops24h 38m

Seattle/Tacoma Intl

Wed 5/20

6:58 pm-12:20 am

2 stops25h 22m

$1,104

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Mon 8/3

3:25 pm-7:12 pm

3 stops31h 47m

Seattle/Tacoma Intl

Sat 9/5

11:56 pm-9:45 am

2 stops29h 49m

$1,292
Quickest round-trip

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Fri 6/19

12:10 pm-2:43 pm

2 stops30h 33m

Seattle/Tacoma Intl

Sun 7/5

7:20 am-6:15 am

2 stops18h 55m

$1,421

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Fri 6/19

5:10 am-12:01 pm

2 stops34h 51m

Seattle/Tacoma Intl

Sat 7/4

8:55 pm-11:35 pm

2 stops22h 40m

$1,478

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Tue 8/4

5:10 pm-2:30 pm

3 stops25h 20m

Seattle/Tacoma Intl

Sat 9/5

11:56 pm-9:45 am

2 stops29h 49m

$1,601

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 7/16

5:30 pm-12:12 am

2 stops34h 42m

Seattle/Tacoma Intl

Thu 7/23

12:56 pm-11:40 pm

2 stops30h 44m

$1,647

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Sorted by cheapest first

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?

    Copa Airlines can get you from Porto Alegre to Seattle in just under 24h 44m. 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
Kent
Lynnwood
Edmonds
Lacey
Renton
Puyallup
Kirkland
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis

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.

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.
Site
Cookie settings©2026 Cheapflights